diff --git a/schemas/purl-test.schema.json b/schemas/purl-test.schema.json
index 4221e75d..744b09fb 100644
--- a/schemas/purl-test.schema.json
+++ b/schemas/purl-test.schema.json
@@ -68,6 +68,34 @@
         }
       }
     },
+    "purl_validation_message": {
+      "title": "PURL validation message",
+      "description": "Validation severity and message to use as a test expected output when validating a PURL.",
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "severity": {
+          "title": "Validation severity",
+          "description": "Validation severity.",
+          "type": "string",
+          "enum": [
+            "info",
+            "warning",
+            "error"
+          ],
+          "meta:enum": {
+            "info": "Informational validation message",
+            "warning": "Warning validation message",
+            "error": "Error validation message"
+          }
+        },
+        "message": {
+          "title": "Validation message",
+          "description": "Validation message.",
+          "type": "string"
+        }
+      }
+    },
     "purl_test": {
       "title": "PURL test",
       "description": "A PURL test with input and expected output.",
@@ -104,12 +132,14 @@
           "enum": [
             "build",
             "parse",
-            "roundtrip"
+            "roundtrip",
+            "validation"
           ],
           "meta:enum": {
             "build": "A PURL building test from decoded components to a canonical PURL string.",
             "parse": "A PURL building test from decoded components to a canonical PURL string.",
-            "roundtrip": "A PURL roundtrip test, parsing then building back a PURL from a canonical string input."
+            "roundtrip": "A PURL roundtrip test, parsing then building back a PURL from a canonical string input.",
+            "validation": "A PURL validation test, checking if a PURL follows all the rules for a particular ecosystem."
           }
         },
         "expected_failure": {
@@ -284,6 +314,39 @@
               "expected_failure_reason"
             ]
           }
+        },
+        {
+          "if": {
+            "properties": {
+              "test_type": {
+                "const": "validation"
+              }
+            },
+            "required": [
+              "test_type"
+            ]
+          },
+          "then": {
+            "properties": {
+              "input": {
+                "title": "Input test PURL",
+                "description": "A PURL string to use as a test input (canonical or not).",
+                "type": "string"
+              },
+              "expected_output": {
+                "title": "Expected validation messages and severities",
+                "description": "List of validation objects with message and severity expected for this test. Can be an empty list.",
+                "type": "array",
+                "items": {
+                  "$ref": "#/definitions/purl_validation_message"
+                }
+              }
+            },
+            "required": [
+              "input",
+              "expected_output"
+            ]
+          }
         }
       ]
     }
diff --git a/tests/types/alpm-test.json b/tests/types/alpm-test.json
index 92d75e74..71767a73 100644
--- a/tests/types/alpm-test.json
+++ b/tests/types/alpm-test.json
@@ -135,6 +135,58 @@
       "expected_output": "pkg:alpm/arch/containers-common@1:0.47.4-4?arch=x86_64",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid alpm package with arch qualifier",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:alpm/arch/pacman@6.0.1-1?arch=x86_64",
+      "expected_output": []
+    },
+    {
+      "description": "alpm package with uppercase nmamespace",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:alpm/Arch/pacman@6.0.1-1?arch=x86_64",
+      "expected_output": [
+        {
+          "severity": "warning",
+          "message": "Namespace is not lowercased for purl type: 'alpm'"
+        }
+      ]
+    },
+    {
+      "description": "alpm package with uppercase nmamespace (advanced)",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:alpm/Arch/pacman@6.0.1-1?arch=x86_64",
+      "expected_output": []
+    },
+    {
+      "description": "Valid alpm package with 'any' arch",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:alpm/arch/python-pip@21.0-1?arch=any",
+      "expected_output": []
+    },
+    {
+      "description": "Valid alpm package with epoch in version",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:alpm/arch/containers-common@1:0.47.4-4?arch=x86_64",
+      "expected_output": []
+    },
+    {
+      "description": "alpm package missing namespace",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:alpm/pacman@6.0.1-1?arch=x86_64",
+      "expected_output": [
+        {
+          "severity": "error",
+          "message": "Namespace is required for purl type: 'alpm'"
+        }
+      ]
     }
   ]
 }
diff --git a/tests/types/apk-test.json b/tests/types/apk-test.json
index a2f4506e..ba0cd3d1 100644
--- a/tests/types/apk-test.json
+++ b/tests/types/apk-test.json
@@ -90,6 +90,62 @@
       "expected_output": "pkg:apk/alpine/apk@2.12.9-r3?arch=x86",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid apk package with arch qualifier",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:apk/alpine/curl@7.83.0-r0?arch=x86",
+      "expected_output": []
+    },
+    {
+      "description": "Valid apk package with higher version and arch qualifier",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:apk/alpine/apk@2.12.9-r3?arch=x86",
+      "expected_output": []
+    },
+    {
+      "description": "Valid apk package with openwrt vendor",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:apk/openwrt/busybox@1.35.0-r5?arch=mips",
+      "expected_output": []
+    },
+    {
+      "description": "apk package missing namespace",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:apk/curl@7.83.0-r0?arch=x86",
+      "expected_output": [
+        {
+          "severity": "error",
+          "message": "Namespace is required for purl type: 'apk'"
+        }
+      ]
+    },
+    {
+      "description": "apk package with uppercase namespace and name",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:apk/FOO/BAR@7.83.0-r0?arch=x86",
+      "expected_output": [
+        {
+          "severity": "warning",
+          "message": "Namespace is not lowercased for purl type: 'apk'"
+        },
+        {
+          "severity": "warning",
+          "message": "Name is not lowercased for purl type: 'apk'"
+        }
+      ]
+    },
+    {
+      "description": "apk package with uppercase namespace and name (advanced)",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:apk/FOO/BAR@7.83.0-r0?arch=x86",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/bitbucket-test.json b/tests/types/bitbucket-test.json
index 8bc5c017..37faaa1b 100644
--- a/tests/types/bitbucket-test.json
+++ b/tests/types/bitbucket-test.json
@@ -91,6 +91,39 @@
       "expected_output": "pkg:bitbucket/birkenfeld/pygments-main@244fd47e07d1014f0aed9c",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid Bitbucket package with commit hash as version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:bitbucket/birkenfeld/pygments-main@244fd47e07d1014f0aed9c",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Bitbucket package with subpath",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:bitbucket/teamname/repo-name@1.0.0#src/main",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Bitbucket package with qualifiers",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:bitbucket/company/service@release-2024?arch=x86_64&os=linux",
+      "expected_output": [
+        {
+          "severity": "info",
+          "message": "Invalid qualifiers found: arch, os. Allowed qualifiers are: repository_url"
+        }
+      ]
+    },
+    {
+      "description": "Valid Bitbucket package with qualifiers",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:bitbucket/company/service@release-2024?arch=x86_64&os=linux",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/bitnami-test.json b/tests/types/bitnami-test.json
index 497e7f1e..ef1001d6 100644
--- a/tests/types/bitnami-test.json
+++ b/tests/types/bitnami-test.json
@@ -184,6 +184,34 @@
       "expected_output": "pkg:bitnami/wordpress@6.2.0?arch=arm64&distro=photon-4",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid Bitnami package without version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:bitnami/wordpress?distro=debian-12",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Bitnami package with version and distro",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:bitnami/wordpress@6.2.0?distro=debian-12",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Bitnami package with arch and distro",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:bitnami/wordpress@6.2.0?arch=arm64&distro=debian-12",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Bitnami package with another distro",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:bitnami/wordpress@6.2.0?arch=arm64&distro=photon-4",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/cargo-test.json b/tests/types/cargo-test.json
index d29d89f8..82fb15e1 100644
--- a/tests/types/cargo-test.json
+++ b/tests/types/cargo-test.json
@@ -123,6 +123,39 @@
       "expected_output": "pkg:cargo/structopt@0.3.11",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid Cargo package with name and version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:cargo/rand@0.7.2",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Cargo package with another example",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:cargo/clap@2.33.0",
+      "expected_output": []
+    },
+    {
+      "description": "Cargo package without version",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:cargo/structopt",
+      "expected_output": []
+    },
+    {
+      "description": "Cargo package with namespace (not allowed)",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:cargo/rustlang/serde@1.0.0",
+      "expected_output": [
+        {
+          "severity": "error",
+          "message": "Namespace is prohibited for purl type: 'cargo'"
+        }
+      ]
     }
   ]
 }
diff --git a/tests/types/cocoapods-test.json b/tests/types/cocoapods-test.json
index 82ddde5f..87b980a4 100644
--- a/tests/types/cocoapods-test.json
+++ b/tests/types/cocoapods-test.json
@@ -164,6 +164,39 @@
       "expected_output": "pkg:cocoapods/GoogleUtilities@7.5.2#NSData%2Bzlib",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid CocoaPods package with name and version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:cocoapods/AFNetworking@4.0.1",
+      "expected_output": []
+    },
+    {
+      "description": "Valid CocoaPods package with subspec in subpath",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:cocoapods/GoogleUtilities@7.5.2#NSData+zlib",
+      "expected_output": []
+    },
+    {
+      "description": "CocoaPods package without version",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:cocoapods/MapsIndoors",
+      "expected_output": []
+    },
+    {
+      "description": "CocoaPods package with namespace (not allowed)",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:cocoapods/apple/ShareKit@2.0#Twitter",
+      "expected_output": [
+        {
+          "severity": "error",
+          "message": "Namespace is prohibited for purl type: 'cocoapods'"
+        }
+      ]
     }
   ]
 }
diff --git a/tests/types/composer-test.json b/tests/types/composer-test.json
index 9e37fd22..e0f3780c 100644
--- a/tests/types/composer-test.json
+++ b/tests/types/composer-test.json
@@ -116,6 +116,62 @@
       "expected_output": "pkg:composer/laravel/laravel@5.5.0",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid Composer package with vendor, name, and version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:composer/laravel/laravel@5.5.0",
+      "expected_output": []
+    },
+    {
+      "description": "Composer package without version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:composer/symfony/console",
+      "expected_output": []
+    },
+    {
+      "description": "Composer package with uppercase namespace (should normalize to lowercase)",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:composer/Laravel/Framework@10.0.0",
+      "expected_output": [
+        {
+          "severity": "warning",
+          "message": "Namespace is not lowercased for purl type: 'composer'"
+        },
+        {
+          "severity": "warning",
+          "message": "Name is not lowercased for purl type: 'composer'"
+        }
+      ]
+    },
+    {
+      "description": "Composer package with uppercase namespace (should normalize to lowercase)",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:composer/Laravel/Framework@10.0.0",
+      "expected_output": []
+    },
+    {
+      "description": "Composer package missing namespace",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:composer/console@5.0.0",
+      "expected_output": [
+        {
+          "severity": "error",
+          "message": "Namespace is required for purl type: 'composer'"
+        }
+      ]
+    },
+    {
+      "description": "Composer package with qualifiers",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:composer/laravel/laravel@5.5.0?repository_url=https://packagist.org",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/conan-test.json b/tests/types/conan-test.json
index b8dcbba2..42a8bc97 100644
--- a/tests/types/conan-test.json
+++ b/tests/types/conan-test.json
@@ -323,6 +323,46 @@
       "expected_output": "pkg:conan/openssl.org/openssl@3.0.3?arch=x86_64&build_type=Debug&compiler=Visual%20Studio&compiler.runtime=MDd&compiler.version=16&os=Windows&prev=b429db8a0e324114c25ec387bfd8281f330d7c5c&rrev=93a82349c31917d2d674d22065c7a9ef9f380c8e&shared=True",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid Conan package with name and version only",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:conan/openssl@3.0.3",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Conan package with namespace (vendor) and qualifiers user+channel",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:conan/openssl.org/openssl@3.0.3?channel=stable&user=bincrafters",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Conan package with namespace, complex qualifiers including rrev and prev",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:conan/openssl.org/openssl@3.0.3?arch=x86_64&build_type=Debug&compiler=Visual Studio&compiler.runtime=MDd&compiler.version=16&os=Windows&prev=b429db8a0e324114c25ec387bfd8281f330d7c5c&rrev=93a82349c31917d2d674d22065c7a9ef9f380c8e&shared=True",
+      "expected_output": [
+        {
+          "severity": "info",
+          "message": "Invalid qualifiers found: arch, build_type, compiler, compiler.runtime, compiler.version, os, shared. Allowed qualifiers are: channel, prev, repository_url, rrev, user"
+        }
+      ]
+    },
+    {
+      "description": "Valid Conan package with only namespace and no qualifiers",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:conan/openssl.org/openssl@3.0.3",
+      "expected_output": []
+    },
+    {
+      "description": "Conan package with unsupported qualifier key",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:conan/openssl@3.0.3?foo=bar",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/conda-test.json b/tests/types/conda-test.json
index a148142e..6b2ef77f 100644
--- a/tests/types/conda-test.json
+++ b/tests/types/conda-test.json
@@ -111,6 +111,39 @@
       "expected_output": "pkg:conda/absl-py@0.4.1?build=py36h06a4308_0&channel=main&subdir=linux-64&type=tar.bz2",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid Conda package with name and version only",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:conda/absl-py@0.4.1",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Conda package with full qualifiers (build, channel, subdir, type)",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:conda/absl-py@0.4.1?build=py36h06a4308_0&channel=main&subdir=linux-64&type=tar.bz2",
+      "expected_output": []
+    },
+    {
+      "description": "Conda package with namespace (not allowed)",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:conda/anaconda/absl-py@0.4.1",
+      "expected_output": [
+        {
+          "severity": "error",
+          "message": "Namespace is prohibited for purl type: 'conda'"
+        }
+      ]
+    },
+    {
+      "description": "Conda package with unsupported qualifier",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:conda/absl-py@0.4.1?foo=bar",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/cpan-test.json b/tests/types/cpan-test.json
index fdbc00d8..d0817eb1 100644
--- a/tests/types/cpan-test.json
+++ b/tests/types/cpan-test.json
@@ -555,6 +555,84 @@
       "expected_output": "pkg:cpan/URI",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid CPAN module without namespace",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:cpan/Perl::Version@1.013",
+      "expected_output": []
+    },
+    {
+      "description": "Valid CPAN distribution with uppercase namespace (author ID)",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:cpan/DROLSKY/DateTime@1.55",
+      "expected_output": []
+    },
+    {
+      "description": "Valid CPAN distribution without version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:cpan/GDT/URI-PackageURL",
+      "expected_output": []
+    },
+    {
+      "description": "Valid CPAN module with :: in name and no namespace",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:cpan/LWP::UserAgent",
+      "expected_output": []
+    },
+    {
+      "description": "CPAN distribution with lowercase namespace (must be uppercase)",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:cpan/oalders/libwww-perl@6.76",
+      "expected_output": [
+        {
+          "severity": "warning",
+          "message": "Namespace must be uppercase for purl type: 'cpan'"
+        }
+      ]
+    },
+    {
+      "description": "CPAN distribution with lowercase namespace (must be uppercase)",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:cpan/oalders/libwww-perl@6.76",
+      "expected_output": []
+    },
+    {
+      "description": "CPAN module with '-' in name (not allowed without namespace)",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:cpan/libwww-perl@6.76",
+      "expected_output": [
+        {
+          "severity": "error",
+          "message": "Name must not contain '-' when Namespace is absent for purl type: 'cpan'"
+        }
+      ]
+    },
+    {
+      "description": "CPAN distribution name containing '::' (not allowed with namespace)",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:cpan/TESTUSER/Bad::Dist@1.0",
+      "expected_output": [
+        {
+          "severity": "error",
+          "message": "Name must not contain '::' when Namespace is present for purl type: 'cpan'"
+        }
+      ]
+    },
+    {
+      "description": "Valid CPAN package with qualifiers (repository_url, download_url, vcs_url)",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:cpan/OALDERS/libwww-perl@6.76?download_url=https://cpan.metacpan.org/authors/id/O/OA/OALDERS/libwww-perl-6.76.tar.gz&ext=tar.gz&repository_url=https://cpan.metacpan.org&vcs_url=https://github.com/libwww-perl",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/cran-test.json b/tests/types/cran-test.json
index d027639a..1624f53d 100644
--- a/tests/types/cran-test.json
+++ b/tests/types/cran-test.json
@@ -241,6 +241,39 @@
       "expected_output": "pkg:cran/caret@6.0-88",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid CRAN package with name and version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:cran/A3@1.0.0",
+      "expected_output": []
+    },
+    {
+      "description": "Valid CRAN package with hyphen in version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:cran/rJava@1.0-4",
+      "expected_output": []
+    },
+    {
+      "description": "Valid CRAN package with complex version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:cran/caret@6.0-88",
+      "expected_output": []
+    },
+    {
+      "description": "CRAN package with namespace (not allowed)",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:cran/ml/caret@6.0-88",
+      "expected_output": [
+        {
+          "severity": "error",
+          "message": "Namespace is prohibited for purl type: 'cran'"
+        }
+      ]
     }
   ]
 }
diff --git a/tests/types/deb-test.json b/tests/types/deb-test.json
index 55b5fb90..7c4d28fa 100644
--- a/tests/types/deb-test.json
+++ b/tests/types/deb-test.json
@@ -285,6 +285,51 @@
       "expected_output": "pkg:deb/debian/attr@1:2.4.47-2%2Bb1?arch=amd64",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid deb package with vendor, name, version, and arch",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:deb/debian/curl@7.50.3-1?arch=i386&distro=jessie",
+      "expected_output": [
+        {
+          "severity": "info",
+          "message": "Invalid qualifiers found: distro. Allowed qualifiers are: arch, repository_url"
+        }
+      ]
+    },
+    {
+      "description": "Valid deb package with vendor, name, version, without distro",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:deb/ubuntu/dpkg@1.19.0.4?arch=amd64",
+      "expected_output": []
+    },
+    {
+      "description": "Valid deb source package",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:deb/debian/attr@1:2.4.47-2?arch=source",
+      "expected_output": []
+    },
+    {
+      "description": "Deb package missing vendor",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:deb/curl@7.50.3-1?arch=amd64",
+      "expected_output": [
+        {
+          "severity": "error",
+          "message": "Namespace is required for purl type: 'deb'"
+        }
+      ]
+    },
+    {
+      "description": "deb package with unsupported qualifier",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:deb/debian/curl@7.50.3-1?foo=bar",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/docker-test.json b/tests/types/docker-test.json
index 0ecb38df..770cf958 100644
--- a/tests/types/docker-test.json
+++ b/tests/types/docker-test.json
@@ -181,6 +181,46 @@
       "expected_output": "pkg:docker/customer/dockerimage@sha256:244fd47e07d10?repository_url=gcr.io",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid Docker image with tag only",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:docker/cassandra@latest",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Docker image with namespace and sha256 digest",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:docker/smartentry/debian@dc437cc87d10",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Docker image with repository_url qualifier",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:docker/customer/dockerimage@sha256:244fd47e07d10?repository_url=gcr.io",
+      "expected_output": []
+    },
+    {
+      "description": "Docker image with unsupported qualifier",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:docker/ubuntu@20.04?bad=value",
+      "expected_output": []
+    },
+    {
+      "description": "Docker image with unsupported qualifier",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:docker/ubuntu@20.04?bad=value",
+      "expected_output": [
+        {
+          "severity": "info",
+          "message": "Invalid qualifiers found: bad. Allowed qualifiers are: repository_url"
+        }
+      ]
     }
   ]
 }
diff --git a/tests/types/gem-test.json b/tests/types/gem-test.json
index 0f2df1bd..0eaeb405 100644
--- a/tests/types/gem-test.json
+++ b/tests/types/gem-test.json
@@ -140,6 +140,46 @@
       "expected_output": "pkg:gem/jruby-launcher@1.1.2?platform=java",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid RubyGem with default platform",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:gem/ruby-advisory-db-check@0.12.4",
+      "expected_output": []
+    },
+    {
+      "description": "Valid RubyGem with java platform",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:gem/jruby-launcher@1.1.2?platform=java",
+      "expected_output": []
+    },
+    {
+      "description": "Subpath included",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:gem/nokogiri@1.14.3#lib/nokogiri.rb",
+      "expected_output": []
+    },
+    {
+      "description": "Extra unknown qualifier",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:gem/sinatra@3.1.2?unknown=value",
+      "expected_output": [
+        {
+          "severity": "info",
+          "message": "Invalid qualifiers found: unknown. Allowed qualifiers are: platform, repository_url"
+        }
+      ]
+    },
+    {
+      "description": "Extra unknown qualifier",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:gem/sinatra@3.1.2?unknown=value",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/generic-test.json b/tests/types/generic-test.json
index cefb0062..ec9f3adc 100644
--- a/tests/types/generic-test.json
+++ b/tests/types/generic-test.json
@@ -133,6 +133,53 @@
       "expected_output": "pkg:generic/bitwarderl?vcs_url=git%2Bhttps://git.fsfe.org/dxtr/bitwarderl%40cc55108da32",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid generic package with version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:generic/openssl@1.1.10g",
+      "expected_output": []
+    },
+    {
+      "description": "Valid generic package with download_url and checksum",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:generic/openssl@1.1.10g?checksum=sha256:de4d501267da&download_url=https://openssl.org/source/openssl-1.1.0g.tar.gz",
+      "expected_output": []
+    },
+    {
+      "description": "generic package with vcs_url",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:generic/bitwarderl?vcs_url=git+https://git.fsfe.org/dxtr/bitwarderl@cc55108da32",
+      "expected_output": [
+        {
+          "severity": "info",
+          "message": "Invalid qualifiers found: vcs_url. Allowed qualifiers are: checksum, download_url"
+        }
+      ]
+    },
+    {
+      "description": "Extra unknown qualifier",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:generic/mypkg@3.0.0?foo=bar",
+      "expected_output": []
+    },
+    {
+      "description": "Subpath included",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:generic/libexample@0.5.2#src/libexample.c",
+      "expected_output": []
+    },
+    {
+      "description": "Missing version and no qualifiers",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:generic/noversionpkg",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/github-test.json b/tests/types/github-test.json
index fa2c8811..68fa2982 100644
--- a/tests/types/github-test.json
+++ b/tests/types/github-test.json
@@ -132,6 +132,32 @@
       "expected_output": "pkg:github/package-url/purl-spec@244fd47e07d1004#everybody/loves/dogs",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid GitHub package with namespace, name, and version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:github/package-url/purl-spec@244fd47e07d1004",
+      "expected_output": []
+    },
+    {
+      "description": "Valid GitHub package with subpath",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:github/package-url/purl-spec@244fd47e07d1004#everybody/loves/dogs",
+      "expected_output": []
+    },
+    {
+      "description": "GitHub package missing namespace",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:github/purl-spec@244fd47e07d1004",
+      "expected_output": [
+        {
+          "severity": "error",
+          "message": "Namespace is required for purl type: 'github'"
+        }
+      ]
     }
   ]
 }
diff --git a/tests/types/golang-test.json b/tests/types/golang-test.json
index 11da72b4..69fb2efe 100644
--- a/tests/types/golang-test.json
+++ b/tests/types/golang-test.json
@@ -223,6 +223,51 @@
       "expected_output": "pkg:golang/github.com/gorilla/context@234fd47e07d1004f0aed9c#api",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid golang package with namespace, name, and version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:golang/github.com/gorilla/context@234fd47e07d1004f0aed9c",
+      "expected_output": []
+    },
+    {
+      "description": "Valid golang package with namespace and name only (no version)",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:golang/golang.org/x/crypto",
+      "expected_output": []
+    },
+    {
+      "description": "Valid golang package with subpath",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:golang/google.golang.org/genproto#googleapis/api/annotations",
+      "expected_output": []
+    },
+    {
+      "description": "Golang package with uppercase namespace",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:golang/GitHub.com/Gorilla/context@234fd47e07d1004f0aed9c",
+      "expected_output": [
+        {
+          "severity": "warning",
+          "message": "Namespace is not lowercased for purl type: 'golang'"
+        }
+      ]
+    },
+    {
+      "description": "Golang package with missing namespace",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:golang/context@234fd47e07d1004f0aed9c",
+      "expected_output": [
+        {
+          "severity": "error",
+          "message": "Namespace is required for purl type: 'golang'"
+        }
+      ]
     }
   ]
 }
diff --git a/tests/types/hackage-test.json b/tests/types/hackage-test.json
index d8d88cfe..1b1ae555 100644
--- a/tests/types/hackage-test.json
+++ b/tests/types/hackage-test.json
@@ -207,6 +207,58 @@
       "expected_output": "pkg:hackage/3d-graphics-examples@0.0.0.2",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid Hackage package with simple kebab-case name",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:hackage/lens@5.0.1",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Hackage package with uppercase letters",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:hackage/AC-HalfInteger@1.2.1",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Hackage package with numbers and dots in version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:hackage/3d-graphics-examples@0.0.0.2",
+      "expected_output": []
+    },
+    {
+      "description": "Hackage package with namespace included",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:hackage/haskell/text@1.2.4",
+      "expected_output": [
+        {
+          "severity": "error",
+          "message": "Namespace is prohibited for purl type: 'hackage'"
+        }
+      ]
+    },
+    {
+      "description": "Hackage package with name not in kebab-case",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:hackage/My_Package@0.1",
+      "expected_output": [
+        {
+          "severity": "warning",
+          "message": "Name cannot contain underscores for purl type:'hackage'"
+        }
+      ]
+    },
+    {
+      "description": "Hackage package with name not in kebab-case",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:hackage/My_Package@0.1",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/hex-test.json b/tests/types/hex-test.json
index 5d58d636..30cc5e11 100644
--- a/tests/types/hex-test.json
+++ b/tests/types/hex-test.json
@@ -168,6 +168,72 @@
       "expected_output": "pkg:hex/bar@1.2.3?repository_url=https://myrepo.example.com",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid Hex package with lowercase name",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:hex/jason@1.1.2",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Hex package with optional namespace",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:hex/acme/foo@2.3.0",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Hex package with subpath",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:hex/phoenix_html@2.13.3#priv/static/phoenix_html.js",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Hex package with repository_url qualifier",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:hex/bar@1.2.3?repository_url=https://myrepo.example.com",
+      "expected_output": []
+    },
+    {
+      "description": "Hex package with uppercase name",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:hex/Phoenix_HTML@1.0.0",
+      "expected_output": [
+        {
+          "severity": "warning",
+          "message": "Name is not lowercased for purl type: 'hex'"
+        }
+      ]
+    },
+    {
+      "description": "Hex package with uppercase name",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:hex/Phoenix_HTML@1.0.0",
+      "expected_output": []
+    },
+    {
+      "description": "Hex package with uppercase namespace",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:hex/ACME/foo@1.0.0",
+      "expected_output": [
+        {
+          "severity": "warning",
+          "message": "Namespace is not lowercased for purl type: 'hex'"
+        }
+      ]
+    },
+    {
+      "description": "Hex package with uppercase namespace",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:hex/ACME/foo@1.0.0",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/huggingface-test.json b/tests/types/huggingface-test.json
index 4849193a..b15eba31 100644
--- a/tests/types/huggingface-test.json
+++ b/tests/types/huggingface-test.json
@@ -240,6 +240,39 @@
       "expected_output": "pkg:huggingface/microsoft/deberta-v3-base@559062ad13d311b87b2c455e67dcd5f1c8f65111?repository_url=https://hub-ci.huggingface.co",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid minimal Hugging Face model",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:huggingface/distilbert-base-uncased@043235d6088ecd3dd5fb5ca3592b6913fd516027",
+      "expected_output": [
+        {
+          "severity": "error",
+          "message": "Namespace is required for purl type: 'huggingface'"
+        }
+      ]
+    },
+    {
+      "description": "Valid Hugging Face model with namespace",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:huggingface/microsoft/deberta-v3-base@559062ad13d311b87b2c455e67dcd5f1c8f65111",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Hugging Face model with subpath",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:huggingface/EleutherAI/gpt-neo-1.3B@797174552ae47f449ab70b684cabcb6603e5e85e#tokenizer/config.json",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Hugging Face model with repository_url qualifier",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:huggingface/EleutherAI/gpt-neo-1.3B@797174552ae47f449ab70b684cabcb6603e5e85e?repository_url=https://hub-ci.huggingface.co",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/luarocks-test.json b/tests/types/luarocks-test.json
index a822563f..213ff95b 100644
--- a/tests/types/luarocks-test.json
+++ b/tests/types/luarocks-test.json
@@ -127,6 +127,46 @@
       "expected_output": "pkg:luarocks/username/packagename@0.1.0-1?repository_url=https://example.com/private_rocks_server/",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid LuaRocks package with only name and version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:luarocks/luasocket@3.1.0-1",
+      "expected_output": []
+    },
+    {
+      "description": "Valid LuaRocks package with namespace and version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:luarocks/hisham/luafilesystem@1.8.0-1",
+      "expected_output": []
+    },
+    {
+      "description": "Valid LuaRocks package with private repository_url qualifier",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:luarocks/username/packagename@0.1.0-1?repository_url=https://example.com/private_rocks_server/",
+      "expected_output": []
+    },
+    {
+      "description": "Unsupported qualifier is provided",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:luarocks/username/packagename@0.1.0-1?channel=beta",
+      "expected_output": [
+        {
+          "severity": "info",
+          "message": "Invalid qualifiers found: channel. Allowed qualifiers are: repository_url"
+        }
+      ]
+    },
+    {
+      "description": "Advanced validation for name with uppercase letters",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:luarocks/LuaSocket@3.1.0-1?private_url=https://example.com/private_rocks_server/",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/maven-test.json b/tests/types/maven-test.json
index 3fea512f..f688d812 100644
--- a/tests/types/maven-test.json
+++ b/tests/types/maven-test.json
@@ -898,6 +898,53 @@
       "expected_output": "pkg:maven/groovy/groovy@1.0?repository_url=https://maven.google.com",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid Maven package with groupId, artifactId, and version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:maven/org.apache.xmlgraphics/batik-anim@1.9.1",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Maven package with type qualifier (pom)",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:maven/org.apache.xmlgraphics/batik-anim@1.9.1?type=pom",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Maven package with classifier qualifier (sources)",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:maven/org.apache.xmlgraphics/batik-anim@1.9.1?classifier=sources",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Maven package with both type and classifier qualifiers",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:maven/org.apache.xmlgraphics/batik-anim@1.9.1?classifier=dist&type=zip",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Maven package with repository_url qualifier",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:maven/groovy/groovy@1.0?repository_url=https://maven.google.com",
+      "expected_output": []
+    },
+    {
+      "description": "Maven package missing namespace (groupId required)",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:maven/batik-anim@1.9.1",
+      "expected_output": [
+        {
+          "severity": "error",
+          "message": "Namespace is required for purl type: 'maven'"
+        }
+      ]
     }
   ]
 }
diff --git a/tests/types/mlflow-test.json b/tests/types/mlflow-test.json
index 9b1ed365..fdb96045 100644
--- a/tests/types/mlflow-test.json
+++ b/tests/types/mlflow-test.json
@@ -260,6 +260,58 @@
       "expected_output": "pkg:mlflow/trafficsigns@10?model_uuid=36233173b22f4c89b451f1228d700d49&repository_url=https://adb-5245952564735461.0.azuredatabricks.net/api/2.0/mlflow&run_id=410a3121-2709-4f88-98dd-dba0ef056b0a",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid MLflow package with name and version only",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:mlflow/creditfraud@3",
+      "expected_output": []
+    },
+    {
+      "description": "Valid MLflow package with repository_url qualifier",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:mlflow/creditfraud@3?repository_url=https://westus2.api.azureml.ms/mlflow/v1.0/subscriptions/a50f2011-fab8-4164-af23-c62881ef8c95/resourceGroups/TestResourceGroup/providers/Microsoft.MachineLearningServices/workspaces/TestWorkspace",
+      "expected_output": []
+    },
+    {
+      "description": "Valid MLflow package with model_uuid and run_id qualifiers",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:mlflow/trafficsigns@10?model_uuid=36233173b22f4c89b451f1228d700d49&repository_url=https://adb-5245952564735461.0.azuredatabricks.net/api/2.0/mlflow&run_id=410a3121-2709-4f88-98dd-dba0ef056b0a",
+      "expected_output": []
+    },
+    {
+      "description": "MLflow package with namespace (not allowed)",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:mlflow/azure/creditfraud@3",
+      "expected_output": [
+        {
+          "severity": "error",
+          "message": "Namespace is prohibited for purl type: 'mlflow'"
+        }
+      ]
+    },
+    {
+      "description": "MLflow package with unsupported qualifier",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:mlflow/creditfraud@3?foo=bar",
+      "expected_output": []
+    },
+    {
+      "description": "MLflow package with unsupported qualifier",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:mlflow/creditfraud@3?foo=bar",
+      "expected_output": [
+        {
+          "severity": "info",
+          "message": "Invalid qualifiers found: foo. Allowed qualifiers are: model_uuid, repository_url, run_id"
+        }
+      ]
     }
   ]
 }
diff --git a/tests/types/npm-test.json b/tests/types/npm-test.json
index 7167f42d..4c768d10 100644
--- a/tests/types/npm-test.json
+++ b/tests/types/npm-test.json
@@ -254,6 +254,46 @@
       "expected_output": "pkg:npm/core@2.0.1#googleapis/api/annotations",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid npm package without scope",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:npm/foobar@12.3.1",
+      "expected_output": []
+    },
+    {
+      "description": "Valid npm package with scope",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:npm/%40angular/animation@12.3.1",
+      "expected_output": []
+    },
+    {
+      "description": "Valid npm package with qualifier vcs_url",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:npm/mypackage@12.4.5?vcs_url=git://host.com/path/to/repo.git%404345abcd34343",
+      "expected_output": []
+    },
+    {
+      "description": "npm package with uppercase name",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:npm/MyPackage@1.0.0",
+      "expected_output": [
+        {
+          "severity": "warning",
+          "message": "Name is not lowercased for purl type: 'npm'"
+        }
+      ]
+    },
+    {
+      "description": "npm package with uppercase name",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:npm/MyPackage@1.0.0",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/nuget-test.json b/tests/types/nuget-test.json
index 67d97916..e8bf6d09 100644
--- a/tests/types/nuget-test.json
+++ b/tests/types/nuget-test.json
@@ -91,6 +91,53 @@
       "expected_output": "pkg:nuget/EnterpriseLibrary.Common@6.0.1304",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid NuGet package with name and version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:nuget/EnterpriseLibrary.Common@6.0.1304",
+      "expected_output": []
+    },
+    {
+      "description": "Valid NuGet package with lowercase name",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:nuget/newtonsoft.json@13.0.3",
+      "expected_output": []
+    },
+    {
+      "description": "NuGet package without version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:nuget/NUnit",
+      "expected_output": []
+    },
+    {
+      "description": "NuGet package with namespace (should be prohibited)",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:nuget/microsoft/aspnetcore.mvc@2.2.0",
+      "expected_output": [
+        {
+          "severity": "error",
+          "message": "Namespace is prohibited for purl type: 'nuget'"
+        }
+      ]
+    },
+    {
+      "description": "NuGet package with pre-release version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:nuget/EntityFramework@7.0.0-preview.2",
+      "expected_output": []
+    },
+    {
+      "description": "NuGet package with 4-part version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:nuget/System.Data.SqlClient@4.8.5.1234",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/oci-test.json b/tests/types/oci-test.json
index 2072ed20..ce18883d 100644
--- a/tests/types/oci-test.json
+++ b/tests/types/oci-test.json
@@ -188,6 +188,65 @@
       "expected_output": "pkg:oci/hello-wasm@sha256:244fd47e07d10?tag=v1",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid OCI package with repository_url, arch, and tag",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:oci/debian@sha256:244fd47e07d10?arch=amd64&repository_url=docker.io/library/debian&tag=latest",
+      "expected_output": []
+    },
+    {
+      "description": "Valid OCI package with repository_url and tag only",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:oci/debian@sha256:244fd47e07d10?repository_url=ghcr.io/debian&tag=bullseye",
+      "expected_output": []
+    },
+    {
+      "description": "Valid OCI package without repository_url (allowed, registry agnostic)",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:oci/hello-wasm@sha256:244fd47e07d10?tag=v1",
+      "expected_output": []
+    },
+    {
+      "description": "OCI package with namespace provided (prohibited)",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:oci/library/debian@sha256:244fd47e07d10?repository_url=docker.io/library/debian",
+      "expected_output": [
+        {
+          "severity": "error",
+          "message": "Namespace is prohibited for purl type: 'oci'"
+        }
+      ]
+    },
+    {
+      "description": "OCI package with missing version (required digest)",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:oci/debian?repository_url=docker.io/library/debian&tag=latest",
+      "expected_output": []
+    },
+    {
+      "description": "OCI package with uppercase name",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:oci/Debian@sha256:244fd47e07d10?repository_url=docker.io/library/debian",
+      "expected_output": [
+        {
+          "severity": "warning",
+          "message": "Name is not lowercased for purl type: 'oci'"
+        }
+      ]
+    },
+    {
+      "description": "OCI package with uppercase name",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:oci/Debian@sha256:244fd47e07d10?repository_url=docker.io/library/debian",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/pub-test.json b/tests/types/pub-test.json
index ef8daf24..428aebc1 100644
--- a/tests/types/pub-test.json
+++ b/tests/types/pub-test.json
@@ -82,6 +82,51 @@
       "expected_output": "pkg:pub/flutter@0.0.0",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid pub package with version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:pub/characters@1.2.0",
+      "expected_output": []
+    },
+    {
+      "description": "Valid pub package without version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:pub/flutter",
+      "expected_output": []
+    },
+    {
+      "description": "Pub package with uppercase letters",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:pub/Flutter@1.0.0",
+      "expected_output": [
+        {
+          "severity": "warning",
+          "message": "Name is not lowercased for purl type: 'pub'"
+        }
+      ]
+    },
+    {
+      "description": "Pub package with hyphen",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:pub/http-client@0.13.6",
+      "expected_output": [
+        {
+          "severity": "warning",
+          "message": "Name contains invalid characters but should only contain letters, digits, or underscores for purl type: 'pub'"
+        }
+      ]
+    },
+    {
+      "description": "Pub package with qualifiers",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:pub/characters@1.2.0?repository_url=https://pub.dev",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/pypi-test.json b/tests/types/pypi-test.json
index 23eb979d..aaa4a63b 100644
--- a/tests/types/pypi-test.json
+++ b/tests/types/pypi-test.json
@@ -222,6 +222,53 @@
       "expected_output": "pkg:pypi/django-allauth@12.23",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid PyPI package with version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:pypi/django@1.11.1",
+      "expected_output": []
+    },
+    {
+      "description": "Valid PyPI package with file_name qualifier",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:pypi/django@1.11.1?file_name=Django-1.11.1.tar.gz",
+      "expected_output": []
+    },
+    {
+      "description": "Valid PyPI package with wheel file_name",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:pypi/django@1.11.1?file_name=Django-1.11.1-py2.py3-none-any.whl",
+      "expected_output": []
+    },
+    {
+      "description": "PyPI package with name containing underscores and dots",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:pypi/django_allauth@12.23",
+      "expected_output": [
+        {
+          "severity": "warning",
+          "message": "Name cannot contain underscores for purl type:'pypi'"
+        }
+      ]
+    },
+    {
+      "description": "PyPI package with name containing underscores and dots",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:pypi/django_allauth@12.23",
+      "expected_output": []
+    },
+    {
+      "description": "Name with uppercase letters",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:pypi/Django-AllAuth@12.23",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/qpkg-test.json b/tests/types/qpkg-test.json
index 9450bf3d..aac8d3d8 100644
--- a/tests/types/qpkg-test.json
+++ b/tests/types/qpkg-test.json
@@ -82,6 +82,46 @@
       "expected_output": "pkg:qpkg/blackberry/com.qnx.qnx710.foo.bar.qux@0.0.4.01449T202205040833L",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid QPKG with vendor and version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:qpkg/blackberry/com.qnx.sdp@7.0.0.SGA201702151847",
+      "expected_output": []
+    },
+    {
+      "description": "Valid QPKG with complex name and version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:qpkg/blackberry/com.qnx.qnx710.foo.bar.qux@0.0.4.01449T202205040833L",
+      "expected_output": []
+    },
+    {
+      "description": "Valid QPKG with repository_url qualifier",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:qpkg/blackberry/com.qnx.sdp@7.0.0?repository_url=https://example.com/qpkg",
+      "expected_output": []
+    },
+    {
+      "description": "QPKG missing vendor (namespace)",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:qpkg/com.qnx.sdp@7.0.0",
+      "expected_output": [
+        {
+          "severity": "error",
+          "message": "Namespace is required for purl type: 'qpkg'"
+        }
+      ]
+    },
+    {
+      "description": "Namespace should be lowercased",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:qpkg/BlackBerry/com.qnx.sdp@7.0.0",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/rpm-test.json b/tests/types/rpm-test.json
index d940a7d8..79631ce3 100644
--- a/tests/types/rpm-test.json
+++ b/tests/types/rpm-test.json
@@ -152,6 +152,50 @@
       "expected_output": "pkg:rpm/centerim@4.22.10-1.el6?arch=i686&distro=fedora-25&epoch=1",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid RPM with vendor, name, version and arch",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:rpm/fedora/curl@7.50.3-1.fc25?arch=i386",
+      "expected_output": []
+    },
+    {
+      "description": "Valid RPM with epoch qualifier",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:rpm/fedora/centerim@4.22.10-1.el6?arch=i686&distro=fedora-25&epoch=1",
+      "expected_output": []
+    },
+    {
+      "description": "RPM missing vendor (namespace)",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:rpm/curl@7.50.3-1.fc25?arch=i386&distro=fedora-25",
+      "expected_output": [
+        {
+          "severity": "error",
+          "message": "Namespace is required for purl type: 'rpm'"
+        },
+        {
+          "severity": "info",
+          "message": "Invalid qualifiers found: distro. Allowed qualifiers are: arch, epoch, repository_url"
+        }
+      ]
+    },
+    {
+      "description": "Valid RPM without version",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:rpm/opensuse/zsh?arch=x86_64&distro=opensuse-15.3",
+      "expected_output": []
+    },
+    {
+      "description": "Valid RPM with repository_url instead of distro",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:rpm/centos/vim@8.0-1.el7?arch=x86_64&repository_url=https://mirror.centos.org/centos/7/os/x86_64",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/swid-test.json b/tests/types/swid-test.json
index 1312a6a3..d42dfd83 100644
--- a/tests/types/swid-test.json
+++ b/tests/types/swid-test.json
@@ -135,6 +135,48 @@
       "expected_output": "pkg:swid/Adobe%2BSystems%2BIncorporated/Adobe%2BInDesign@CC?tag_id=CreativeCloud-CS6-Win-GM-MUL",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid SWID with namespace, name, version and tag_id",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:swid/Acme/example.com/Enterprise+Server@1.0.0?tag_id=75b8c285-fa7b-485b-b199-4745e3004d0d",
+      "expected_output": []
+    },
+    {
+      "description": "Valid SWID with only name and tag_id (no namespace)",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:swid/Fedora@29?tag_id=org.fedoraproject.Fedora-29",
+      "expected_output": []
+    },
+    {
+      "description": "Valid SWID with tag_creator_name and tag_creator_regid qualifiers",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:swid/Adobe Systems Incorporated/Adobe InDesign@CC?tag_creator_name=AdobeCorp&tag_creator_regid=com.adobe&tag_id=CreativeCloud-CS6-Win-GM-MUL",
+      "expected_output": []
+    },
+    {
+      "description": "SWID missing required tag_id qualifier",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:swid/Acme/example.com/Enterprise+Server@1.0.0",
+      "expected_output": []
+    },
+    {
+      "description": "SWID with empty tag_id",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:swid/Acme/example.com/Enterprise+Server@1.0.0?tag_id=",
+      "expected_output": []
+    },
+    {
+      "description": "Valid SWID with optional patch and tag_version",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:swid/Acme/example.com/Enterprise+Server@1.0.0?patch=true&tag_id=75b8c285-fa7b-485b-b199-4745e3004d0d&tag_version=3",
+      "expected_output": []
     }
   ]
 }
diff --git a/tests/types/swift-test.json b/tests/types/swift-test.json
index ef3d1fb1..c120cdc6 100644
--- a/tests/types/swift-test.json
+++ b/tests/types/swift-test.json
@@ -234,6 +234,39 @@
       "expected_output": "pkg:swift/github.com/RxSwiftCommunity/RxFlow@2.12.4",
       "expected_failure": false,
       "expected_failure_reason": null
+    },
+    {
+      "description": "Valid Swift package with namespace, name, and version",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:swift/github.com/Alamofire/Alamofire@5.4.3",
+      "expected_output": []
+    },
+    {
+      "description": "namespace is missing",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:swift/Alamofire@5.4.3",
+      "expected_output": [
+        {
+          "severity": "error",
+          "message": "Namespace is required for purl type: 'swift'"
+        }
+      ]
+    },
+    {
+      "description": "unsupported qualifier is provided",
+      "test_group": "base",
+      "test_type": "validation",
+      "input": "pkg:swift/github.com/Alamofire/Alamofire@5.4.3?repository_url=https://swiftpm.example.com/",
+      "expected_output": []
+    },
+    {
+      "description": "Valid Swift package with case-sensitive namespace and name",
+      "test_group": "advanced",
+      "test_type": "validation",
+      "input": "pkg:swift/GitHub.com/SomeOrg/MyLibrary@1.0.0",
+      "expected_output": []
     }
   ]
 }