diff --git a/FirebaseVertexAI/Tests/TestApp/Tests/Integration/GenerateContentIntegrationTests.swift b/FirebaseVertexAI/Tests/TestApp/Tests/Integration/GenerateContentIntegrationTests.swift
index 95835a4ea7d..f1650f26471 100644
--- a/FirebaseVertexAI/Tests/TestApp/Tests/Integration/GenerateContentIntegrationTests.swift
+++ b/FirebaseVertexAI/Tests/TestApp/Tests/Integration/GenerateContentIntegrationTests.swift
@@ -165,31 +165,6 @@ struct GenerateContentIntegrationTests {
     #endif // canImport(UIKit)
   }
 
-  @Test(arguments: InstanceConfig.allConfigsExceptDeveloperV1)
-  func generateContentSchemaItems(_ config: InstanceConfig) async throws {
-    let model = VertexAI.componentInstance(config).generativeModel(
-      modelName: ModelNames.gemini2FlashLite,
-      generationConfig: GenerationConfig(
-        responseMIMEType: "application/json",
-        responseSchema:
-        .array(
-          items: .string(description: "The name of the city"),
-          description: "A list of city names",
-          minItems: 3,
-          maxItems: 5
-        )
-      ),
-      safetySettings: safetySettings
-    )
-    let prompt = "What are the biggest cities in Canada?"
-    let response = try await model.generateContent(prompt)
-    let text = try #require(response.text).trimmingCharacters(in: .whitespacesAndNewlines)
-    let jsonData = try #require(text.data(using: .utf8))
-    let decodedJSON = try JSONDecoder().decode([String].self, from: jsonData)
-    #expect(decodedJSON.count >= 3, "Expected at least 3 cities, but got \(decodedJSON.count)")
-    #expect(decodedJSON.count <= 5, "Expected at most 5 cities, but got \(decodedJSON.count)")
-  }
-
   // MARK: Streaming Tests
 
   @Test(arguments: InstanceConfig.allConfigs)
diff --git a/FirebaseVertexAI/Tests/TestApp/Tests/Integration/SchemaTests.swift b/FirebaseVertexAI/Tests/TestApp/Tests/Integration/SchemaTests.swift
new file mode 100644
index 00000000000..35eb6442d12
--- /dev/null
+++ b/FirebaseVertexAI/Tests/TestApp/Tests/Integration/SchemaTests.swift
@@ -0,0 +1,75 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import FirebaseAuth
+import FirebaseCore
+import FirebaseStorage
+import FirebaseVertexAI
+import Testing
+import VertexAITestApp
+
+#if canImport(UIKit)
+  import UIKit
+#endif // canImport(UIKit)
+
+@testable import struct FirebaseVertexAI.BackendError
+
+@Suite(.serialized)
+/// Test the schema fields.
+struct SchemaTests {
+  // Set temperature, topP and topK to lowest allowed values to make responses more deterministic.
+  let generationConfig = GenerationConfig(temperature: 0.0, topP: 0.0, topK: 1)
+  let safetySettings = [
+    SafetySetting(harmCategory: .harassment, threshold: .blockLowAndAbove),
+    SafetySetting(harmCategory: .hateSpeech, threshold: .blockLowAndAbove),
+    SafetySetting(harmCategory: .sexuallyExplicit, threshold: .blockLowAndAbove),
+    SafetySetting(harmCategory: .dangerousContent, threshold: .blockLowAndAbove),
+    SafetySetting(harmCategory: .civicIntegrity, threshold: .blockLowAndAbove),
+  ]
+  // Candidates and total token counts may differ slightly between runs due to whitespace tokens.
+  let tokenCountAccuracy = 1
+
+  let storage: Storage
+  let userID1: String
+
+  init() async throws {
+    userID1 = try await TestHelpers.getUserID()
+    storage = Storage.storage()
+  }
+
+  @Test(arguments: InstanceConfig.allConfigsExceptDeveloperV1)
+  func generateContentSchemaItems(_ config: InstanceConfig) async throws {
+    let model = VertexAI.componentInstance(config).generativeModel(
+      modelName: ModelNames.gemini2FlashLite,
+      generationConfig: GenerationConfig(
+        responseMIMEType: "application/json",
+        responseSchema:
+            .array(
+              items: .string(description: "The name of the city"),
+              description: "A list of city names",
+              minItems: 3,
+              maxItems: 5
+            )
+      ),
+      safetySettings: safetySettings
+    )
+    let prompt = "What are the biggest cities in Canada?"
+    let response = try await model.generateContent(prompt)
+    let text = try #require(response.text).trimmingCharacters(in: .whitespacesAndNewlines)
+    let jsonData = try #require(text.data(using: .utf8))
+    let decodedJSON = try JSONDecoder().decode([String].self, from: jsonData)
+    #expect(decodedJSON.count >= 3, "Expected at least 3 cities, but got \(decodedJSON.count)")
+    #expect(decodedJSON.count <= 5, "Expected at most 5 cities, but got \(decodedJSON.count)")
+  }
+}
diff --git a/FirebaseVertexAI/Tests/TestApp/VertexAITestApp.xcodeproj/project.pbxproj b/FirebaseVertexAI/Tests/TestApp/VertexAITestApp.xcodeproj/project.pbxproj
index a7d2bf023b2..350f121c394 100644
--- a/FirebaseVertexAI/Tests/TestApp/VertexAITestApp.xcodeproj/project.pbxproj
+++ b/FirebaseVertexAI/Tests/TestApp/VertexAITestApp.xcodeproj/project.pbxproj
@@ -28,6 +28,7 @@
 		86D77E022D7B63AF003D155D /* Constants.swift in Sources */ = {isa = PBXBuildFile; fileRef = 86D77E012D7B63AC003D155D /* Constants.swift */; };
 		86D77E042D7B6C9D003D155D /* InstanceConfig.swift in Sources */ = {isa = PBXBuildFile; fileRef = 86D77E032D7B6C95003D155D /* InstanceConfig.swift */; };
 		DEF0BB4F2DA74F680093E9F4 /* TestHelpers.swift in Sources */ = {isa = PBXBuildFile; fileRef = DEF0BB4E2DA74F460093E9F4 /* TestHelpers.swift */; };
+		DEF0BB512DA9B7450093E9F4 /* SchemaTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = DEF0BB502DA9B7400093E9F4 /* SchemaTests.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -61,6 +62,7 @@
 		86D77E012D7B63AC003D155D /* Constants.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Constants.swift; sourceTree = "<group>"; };
 		86D77E032D7B6C95003D155D /* InstanceConfig.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = InstanceConfig.swift; sourceTree = "<group>"; };
 		DEF0BB4E2DA74F460093E9F4 /* TestHelpers.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TestHelpers.swift; sourceTree = "<group>"; };
+		DEF0BB502DA9B7400093E9F4 /* SchemaTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SchemaTests.swift; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -139,6 +141,7 @@
 		868A7C572CCC27AF00E449DD /* Integration */ = {
 			isa = PBXGroup;
 			children = (
+				DEF0BB502DA9B7400093E9F4 /* SchemaTests.swift */,
 				DEF0BB4E2DA74F460093E9F4 /* TestHelpers.swift */,
 				8689CDCB2D7F8BCF00BF426B /* CountTokensIntegrationTests.swift */,
 				868A7C4D2CCC1F4700E449DD /* Credentials.swift */,
@@ -292,6 +295,7 @@
 			files = (
 				8689CDCC2D7F8BD700BF426B /* CountTokensIntegrationTests.swift in Sources */,
 				86D77E042D7B6C9D003D155D /* InstanceConfig.swift in Sources */,
+				DEF0BB512DA9B7450093E9F4 /* SchemaTests.swift in Sources */,
 				DEF0BB4F2DA74F680093E9F4 /* TestHelpers.swift in Sources */,
 				868A7C4F2CCC229F00E449DD /* Credentials.swift in Sources */,
 				864F8F712D4980DD0002EA7E /* ImagenIntegrationTests.swift in Sources */,