Fix for square brackets in the operation name

README.md

@@ -75,6 +75,8 @@ You can find some **examples** in this repository to help you set up your genera
 
 * [samples/kotlin-android](/samples/kotlin-android) Contains an example of an Android Library configured with a `build.gradle.kts` file, using Kotlin as scripting language.
 
+* [samples/junit-tests](/samples/junit-tests) This sample contains specs used to test edge cases and scenarios that have been reported in the issue tracker or that are worth testing.
+
 ## How the generated code will look like
 
 [Here](/SAMPLES.md) you can find some examples of how the generated code will look like in your project.

buildSrc/src/main/java/com/yelp/codegen/gradle/PublishingVersions.kt

@@ -1,7 +1,7 @@
 @file:Suppress("Unused")
 
 object PublishingVersions {
-    const val PLUGIN_VERSION = "1.0.0"
+    const val PLUGIN_VERSION = "1.1.0-SNAPSHOT"
     const val PLUGIN_GROUP = "com.yelp.codegen"
     const val PLUGIN_ARTIFACT = "plugin"
 }

plugin/src/main/java/com/yelp/codegen/KotlinGenerator.kt

@@ -425,4 +425,15 @@ class KotlinGenerator : SharedCodegen() {
         // Override the swagger version with the one provided from command line.
         swagger.info.version = additionalProperties[SPEC_VERSION] as String
     }
+
+    /**
+     * Function used to sanitize the name for operation generations.
+     * The superclass is not providing the correct string pattern (See #31).
+     *
+     * Here we override the provided pattern to include also square brackets in during the
+     * parameter name generation.
+     */
+    override fun removeNonNameElementToCamelCase(name: String?): String {
+        return super.removeNonNameElementToCamelCase(name, "[-_:;#\\[\\]]")
+    }
 }

plugin/src/test/java/com/yelp/codegen/KotlinGeneratorTest.kt

@@ -11,4 +11,14 @@ class KotlinGeneratorTest {
         assert(KotlinGenerator().toModelName("model with dot.s") == "ModelWithDotS")
         assert(KotlinGenerator().toModelName("model with userscore_s") == "ModelWithUserscoreS")
     }
+
+    @Test
+    fun removeNonNameElementToCamelCase_withSquareBrackets() {
+        assert(KotlinGenerator().removeNonNameElementToCamelCase("type[]") == "type")
+        assert(KotlinGenerator().removeNonNameElementToCamelCase("type[value]") == "typeValue")
+        assert(KotlinGenerator().removeNonNameElementToCamelCase("type[") == "type")
+        assert(KotlinGenerator().removeNonNameElementToCamelCase("type]") == "type")
+        assert(KotlinGenerator().removeNonNameElementToCamelCase("[type]") == "type")
+        assert(KotlinGenerator().removeNonNameElementToCamelCase("[type]key") == "typeKey")
+    }
 }

samples/junit-tests/build.gradle

@@ -0,0 +1,65 @@
+buildscript {
+    repositories {
+        mavenLocal()
+        gradlePluginPortal()
+        google()
+        mavenCentral()
+        jcenter()
+    }
+
+    dependencies {
+        classpath "com.android.tools.build:gradle:3.2.1"
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.21"
+        classpath "com.yelp.codegen:plugin:1.1.0-SNAPSHOT"
+    }
+}
+
+apply plugin: "com.android.library"
+apply plugin: "kotlin-android"
+apply plugin: "com.yelp.codegen.plugin"
+
+android {
+    compileSdkVersion = 28
+    defaultConfig {
+        minSdkVersion 21
+        targetSdkVersion 28
+        versionCode = 1
+        versionName = "1.0"
+    }
+}
+
+dependencies {
+    // Kotlin
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.21"
+    implementation "org.jetbrains.kotlin:kotlin-reflect:1.3.21"
+
+    // Moshi
+    implementation "com.squareup.moshi:moshi:1.8.0"
+    implementation "com.squareup.moshi:moshi-adapters:1.8.0"
+    implementation "com.squareup.moshi:moshi-kotlin:1.8.0"
+    implementation "com.squareup.retrofit2:converter-moshi:2.5.0"
+    implementation "com.squareup.retrofit2:adapter-rxjava2:2.5.0"
+
+    // Date Support
+    implementation "com.jakewharton.threetenabp:threetenabp:1.1.1"
+
+    // RxJava
+    implementation "io.reactivex.rxjava2:rxjava:2.2.4"
+    implementation "io.reactivex.rxjava2:rxandroid:2.1.0"
+
+    // Testing Dependencies
+    testImplementation "junit:junit:4.12"
+    testImplementation "com.squareup.okhttp3:mockwebserver:3.12.3"
+}
+
+generateSwagger {
+    platform = "kotlin"
+    packageName = "com.yelp.codegen.generatecodesamples"
+    specName = "junittests"
+    inputFile = file("./junit_tests_specs.json")
+    outputDir = file("./src/main/java/")
+}
+
+repositories {
+    mavenCentral()
+}

samples/junit-tests/junit_tests_specs.json

@@ -0,0 +1,61 @@
+{
+    "definitions": {},
+    "info": {
+        "description": "This spec is used to have JUnit Tests to check the generated code.",
+        "title": "JUnit Tests",
+        "version": "1.0.0"
+    },
+    "paths": {
+        "/brackets/in/parameter/name": {
+            "get": {
+                "description": "Make sure that brackets in parameter name are treated properly",
+                "operationId": "getBracketsInParameterName",
+                "parameters": [
+                    {
+                        "in": "query",
+                        "name": "page",
+                        "required": false,
+                        "type": "string"
+                    },
+                    {
+                        "in": "query",
+                        "name": "page[]",
+                        "required": false,
+                        "type": "string"
+                    },
+                    {
+                        "in": "query",
+                        "name": "datePosted[before]",
+                        "required": false,
+                        "type": "string"
+                    },
+                    {
+                        "in": "query",
+                        "name": "datePosted[strictly_before]",
+                        "required": false,
+                        "type": "string"
+                    },
+                    {
+                        "in": "query",
+                        "name": "datePosted[after]",
+                        "required": false,
+                        "type": "string"
+                    },
+                    {
+                        "in": "query",
+                        "name": "datePosted[strictly_after]",
+                        "required": false,
+                        "type": "string"
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "successful operation"
+                    }
+                },
+                "summary": "Test brackets in parameter name"
+            }
+        }
+    },
+    "swagger": "2.0"
+}

samples/junit-tests/src/main/AndroidManifest.xml

@@ -0,0 +1,2 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.yelp.samplelibrary"/>

samples/junit-tests/src/main/java/com/yelp/codegen/generatecodesamples/apis/DefaultApi.kt

@@ -0,0 +1,39 @@
+/**
+ * NOTE: This class is auto generated by the Swagger Gradle Codegen for the following API: JUnit Tests
+ *
+ * More info on this tool is available on https://github.com/Yelp/swagger-gradle-codegen
+ */
+
+package com.yelp.codegen.generatecodesamples.apis
+
+import io.reactivex.Completable
+import retrofit2.http.GET
+import retrofit2.http.Headers
+
+@JvmSuppressWildcards
+interface DefaultApi {
+    /**
+     * Test brackets in parameter name
+     * Make sure that brackets in parameter name are treated properly
+     * The endpoint is owned by junittests service owner
+     * @param page (optional)
+     * @param page2 (optional)
+     * @param datePostedBefore (optional)
+     * @param datePostedStrictlyBefore (optional)
+     * @param datePostedAfter (optional)
+     * @param datePostedStrictlyAfter (optional)
+     */
+    @Headers(
+            "X-Operation-ID: getBracketsInParameterName"
+    )
+
+    @GET("/brackets/in/parameter/name")
+    fun getBracketsInParameterName(
+        @retrofit2.http.Query("page") page: String?,
+        @retrofit2.http.Query("page[]") page2: String?,
+        @retrofit2.http.Query("datePosted[before]") datePostedBefore: String?,
+        @retrofit2.http.Query("datePosted[strictly_before]") datePostedStrictlyBefore: String?,
+        @retrofit2.http.Query("datePosted[after]") datePostedAfter: String?,
+        @retrofit2.http.Query("datePosted[strictly_after]") datePostedStrictlyAfter: String?
+    ): Completable
+}

samples/junit-tests/src/main/java/com/yelp/codegen/generatecodesamples/tools/CollectionFormatConverterFactory.kt

@@ -0,0 +1,32 @@
+package com.yelp.codegen.generatecodesamples.tools
+
+import retrofit2.Converter
+import retrofit2.Retrofit
+import java.lang.reflect.Type
+
+internal class CollectionFormatConverterFactory : Converter.Factory() {
+
+    override fun stringConverter(type: Type, annotations: Array<out Annotation>, retrofit: Retrofit): Converter<*, String>? {
+        val rawType = getRawType(type)
+        if (rawType == String::class.java || rawType == List::class.java)
+            annotations.forEach {
+                when (it) {
+                    is CSV -> return CollectionFormatConverter(",")
+                    is SSV -> return CollectionFormatConverter(" ")
+                    is TSV -> return CollectionFormatConverter("\t")
+                    is PIPES -> return CollectionFormatConverter("|")
+                }
+            }
+        return null
+    }
+
+    private class CollectionFormatConverter(private val separator: String) : Converter<Any, String> {
+        override fun convert(value: Any): String {
+            when (value) {
+                is String -> return value
+                is List<*> -> return value.joinToString(separator)
+            }
+            throw RuntimeException("Unsupported type")
+        }
+    }
+}

samples/junit-tests/src/main/java/com/yelp/codegen/generatecodesamples/tools/CollectionFormats.kt

@@ -0,0 +1,17 @@
+package com.yelp.codegen.generatecodesamples.tools
+
+@Target(AnnotationTarget.FIELD, AnnotationTarget.VALUE_PARAMETER)
+@Retention(AnnotationRetention.RUNTIME)
+annotation class CSV
+
+@Target(AnnotationTarget.FIELD, AnnotationTarget.VALUE_PARAMETER)
+@Retention(AnnotationRetention.RUNTIME)
+annotation class SSV
+
+@Target(AnnotationTarget.FIELD, AnnotationTarget.VALUE_PARAMETER)
+@Retention(AnnotationRetention.RUNTIME)
+annotation class TSV
+
+@Target(AnnotationTarget.FIELD, AnnotationTarget.VALUE_PARAMETER)
+@Retention(AnnotationRetention.RUNTIME)
+annotation class PIPES

samples/junit-tests/src/main/java/com/yelp/codegen/generatecodesamples/tools/EnumToValueConverterFactory.kt

@@ -0,0 +1,34 @@
+package com.yelp.codegen.generatecodesamples.tools
+
+import com.squareup.moshi.Json
+import retrofit2.Converter
+import retrofit2.Retrofit
+import java.lang.reflect.Type
+
+internal class EnumToValueConverterFactory : Converter.Factory() {
+
+    private val enumConverter = EnumToValueConverter()
+
+    override fun stringConverter(type: Type, annotations: Array<out Annotation>, retrofit: Retrofit): Converter<*, String>? {
+        return if (type is Class<*> && type.isEnum) {
+            enumConverter
+        } else {
+            null
+        }
+    }
+
+    internal class EnumToValueConverter : Converter<Any, String> {
+        override fun convert(enum: Any): String? {
+            val enumName = (enum as Enum<*>).name
+            val jsonAnnotation: Json? = enum.javaClass.getField(enumName).getAnnotation(Json::class.java)
+
+            // Checking if the Enum is annotated with @Json to get the name.
+            // If not, fallback to enum default (.toString())
+            return if (jsonAnnotation != null) {
+                jsonAnnotation.name
+            } else {
+                enum.toString()
+            }
+        }
+    }
+}

samples/junit-tests/src/main/java/com/yelp/codegen/generatecodesamples/tools/GeneratedCodeConverters.kt

@@ -0,0 +1,38 @@
+package com.yelp.codegen.generatecodesamples.tools
+
+import com.squareup.moshi.Moshi
+import com.squareup.moshi.kotlin.reflect.KotlinJsonAdapterFactory
+import retrofit2.Converter
+import retrofit2.converter.moshi.MoshiConverterFactory
+
+object GeneratedCodeConverters {
+    private val moshi = Moshi.Builder()
+            .add(XNullableAdapterFactory())
+            .add(KotlinJsonAdapterFactory())
+            .add(TypesAdapterFactory())
+            .build()
+
+    /**
+     * Creates everything needed for retrofit to make it work with the client lib, including a
+     * [Moshi] instance. If you want to use your own instance of moshi, use
+     * converterFactory(moshi) instead, and add [XNullableAdapterFactory], [KotlinJsonAdapterFactory] and
+     * [TypesAdapterFactory] to your moshi builder (in a similar way how we are instantiating the `moshi` field here).
+     */
+    @JvmStatic
+    fun converterFactory(): Converter.Factory {
+        return WrapperConverterFactory(
+                CollectionFormatConverterFactory(),
+                EnumToValueConverterFactory(),
+                MoshiConverterFactory.create(moshi)
+        )
+    }
+
+    @JvmStatic
+    fun converterFactory(moshi: Moshi): Converter.Factory {
+        return WrapperConverterFactory(
+                CollectionFormatConverterFactory(),
+                EnumToValueConverterFactory(),
+                MoshiConverterFactory.create(moshi)
+        )
+    }
+}