Unit test generated by RoostGPT

core/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="UTF-8"?>
+<?xml version="1.0"?>
 <!--
  Copyright 2025 Google LLC
 
@@ -16,19 +16,15 @@
 -->
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
-
   <parent>
     <groupId>com.google.adk</groupId>
     <artifactId>google-adk-parent</artifactId>
-    <version>0.4.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+    <version>0.4.1-SNAPSHOT</version>
+    <!-- {x-version-update:google-adk:current} -->
   </parent>
-
   <artifactId>google-adk</artifactId>
   <name>Agent Development Kit</name>
   <description>Agent Development Kit: an open-source, code-first toolkit designed to simplify building, evaluating, and deploying advanced AI agents anywhere.</description>
-
-
-
   <dependencies>
     <dependency>
       <groupId>com.anthropic</groupId>
@@ -201,6 +197,15 @@
       <plugin>
         <artifactId>maven-compiler-plugin</artifactId>
       </plugin>
+      <plugin>
+        <groupId>io.spring.javaformat</groupId>
+        <artifactId>spring-javaformat-maven-plugin</artifactId>
+        <version>0.0.40</version>
+        <!--Plugin added by RoostGPT-->
+      </plugin>
     </plugins>
+    <pluginManagement>
+      <plugins/>
+    </pluginManagement>
   </build>
-</project>
+</project>

core/src/test/java/com/google/adk/models/BuilderApiClientTest.java

@@ -0,0 +1,76 @@
+/*
+ * 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.
+ */
+// ********RoostGPT********
+/*
+Test generated by RoostGPT for test unit-java-adk using AI Type Open AI and AI Model gpt-5-nano
+
+ROOST_METHOD_HASH=apiClient_c66ebe1d58
+ROOST_METHOD_SIG_HASH=apiClient_d59e3a5ed5
+
+Scenario 1: apiClient_setsExplicitClient
+
+Details:
+  TestName: apiClient_setsExplicitClient
+  Description: Verify that calling apiClient with a non-null Client assigns the provided client to the builder and returns the same builder instance to support chaining.
+
+Execution:
+  Arrange: Create a Gemini.Builder via Gemini.builder(); prepare a mock/stub Client instance named mockClient.
+  Act: Builder resultBuilder = builder.apiClient(mockClient);
+  Assert: Assert that resultBuilder is the same object instance as the original builder (reference equality); optionally verify that the builder can continue chaining by calling another method and ensuring no exception is thrown.
+  Validation: Ensures that the explicit client is stored in the builder and that the fluent API contract (returning this) is preserved, enabling method chaining.
+
+
+*/
+
+// ********RoostGPT********
+
+package com.google.adk.models;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import com.google.genai.Client;
+import org.junit.jupiter.api.*;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+
+public class BuilderApiClientTest {
+
+	@Test
+	@Tag("valid")
+	@DisplayName("apiClient_setsExplicitClient")
+	public void testApiClient_setsExplicitClient() {
+		Gemini.Builder builder = Gemini.builder();
+		Client mockClient = Mockito.mock(Client.class);
+		Gemini.Builder resultBuilder = builder.apiClient(mockClient);
+		assertSame(builder, resultBuilder);
+		// Continue chaining to ensure fluent API contract
+		Gemini.Builder chained = resultBuilder.modelName("test-model");
+		Gemini gemini = chained.build();
+		assertNotNull(gemini);
+	}
+
+	@Test
+	@Tag("valid")
+	@DisplayName("apiClient_acceptsNullAndReturnsThisForChaining")
+	public void testApiClient_acceptsNullAndReturnsThisForChaining() {
+		Gemini.Builder builder = Gemini.builder();
+		Gemini.Builder result = builder.apiClient(null);
+		assertSame(builder, result);
+	}
+
+}

core/src/test/java/com/google/adk/models/BuilderApiKeyTest.java

@@ -0,0 +1,85 @@
+/*
+ * 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.
+ */
+// ********RoostGPT********
+/*
+Test generated by RoostGPT for test unit-java-adk using AI Type Open AI and AI Model gpt-5-nano
+
+ROOST_METHOD_HASH=apiKey_6f7fe65f1f
+ROOST_METHOD_SIG_HASH=apiKey_f645a7d0cc
+
+Scenario 1: Setting non-null apiKey stores the value and enables fluent chaining on the Builder
+Details:
+  TestName: settingApiKeyStoresValue
+  Description: Verify that calling apiKey with a non-null string assigns that value to the builder's apiKey field and returns the same Builder instance to support method chaining.
+Execution:
+  Arrange: Instantiate a new Gemini.Builder via Gemini.builder().
+  Act: Call builder.apiKey("my-api-key") and capture the returned reference.
+  Assert: The returned reference is the same instance as the original builder (identity check) to confirm fluent chaining is preserved.
+Validation:
+  The assertion confirms fluent API usage for the Builder.apiKey method, ensuring subsequent builder methods can be chained without losing the current state.
+
+*/
+
+// ********RoostGPT********
+
+package com.google.adk.models;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import java.lang.reflect.Field;
+import org.junit.jupiter.api.*;
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+
+public class BuilderApiKeyTest {
+
+	@Test
+	@Tag("valid")
+	public void settingApiKeyStoresValue() throws Exception {
+		// Arrange
+		Gemini.Builder builder = Gemini.builder();
+		String testApiKey = java.util.UUID.randomUUID().toString();
+		// Act
+		Gemini.Builder returned = builder.apiKey(testApiKey); // TODO: Replace with a
+																// known key if using
+																// integration tests
+		// Assert fluent chaining
+		assertSame(builder, returned, "apiKey should return the same builder instance for fluent chaining.");
+		// Assert that the value is stored in the builder (private field access via
+		// reflection)
+		Field field = Gemini.Builder.class.getDeclaredField("apiKey");
+		field.setAccessible(true);
+		String value = (String) field.get(builder);
+		assertEquals(testApiKey, value, "The apiKey value stored in the builder should match the input value.");
+	}
+
+	@Test
+	@Tag("valid")
+	public void settingApiKeyWithNullValue() throws Exception {
+		// Arrange
+		Gemini.Builder builder = Gemini.builder();
+		// Act
+		Gemini.Builder returned = builder.apiKey(null);
+		// Assert fluent chaining
+		assertSame(builder, returned, "apiKey(null) should return the same builder instance for fluent chaining.");
+		// Assert that the value stored is null
+		Field field = Gemini.Builder.class.getDeclaredField("apiKey");
+		field.setAccessible(true);
+		String value = (String) field.get(builder);
+		assertNull(value, "The apiKey value should be null when null is passed.");
+	}
+
+}

core/src/test/java/com/google/adk/models/BuilderBuildTest.java

@@ -0,0 +1,125 @@
+/*
+ * 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.
+ */
+// ********RoostGPT********
+/*
+Test generated by RoostGPT for test unit-java-adk using AI Type Open AI and AI Model gpt-5-nano
+
+ROOST_METHOD_HASH=build_a5a48bce54
+ROOST_METHOD_SIG_HASH=build_6248639c03
+
+Scenario 1: Build with explicit apiClient returns Gemini using that client
+Details:
+  TestName: buildWithApiClient
+  Description: When apiClient is provided to the Builder along with a non-null modelName, the build() method should instantiate Gemini using that exact apiClient, ignoring apiKey and vertexCredentials.
+Execution:
+  Arrange: Create a Builder, set modelName to "gemini-2.0", create a mock Client instance named apiClientMock, and call builder.apiClient(apiClientMock).
+  Act: Call builder.build().
+  Assert: The returned object is an instance of Gemini, and via reflection verify that the internal apiClient reference equals apiClientMock; verify the modelName used is "gemini-2.0".
+Validation:
+  Clarify that the test confirms explicit apiClient takes precedence over other credential options and that the Gemini is wired to use the provided client.
+
+*/
+
+// ********RoostGPT********
+
+package com.google.adk.models;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.Mockito.*;
+import com.google.genai.Client;
+import java.lang.reflect.Field;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.*;
+import static com.google.common.base.StandardSystemProperty.JAVA_VERSION;
+import com.google.adk.Version;
+import com.google.common.collect.ImmutableMap;
+import com.google.errorprone.annotations.CanIgnoreReturnValue;
+import com.google.genai.ResponseStream;
+import com.google.genai.types.Candidate;
+import com.google.genai.types.Content;
+import com.google.genai.types.FinishReason;
+import com.google.genai.types.GenerateContentConfig;
+import com.google.genai.types.GenerateContentResponse;
+import com.google.genai.types.HttpOptions;
+import com.google.genai.types.LiveConnectConfig;
+import com.google.genai.types.Part;
+import io.reactivex.rxjava3.core.Flowable;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.concurrent.CompletableFuture;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class BuilderBuildTest {
+
+	@Test
+	@Tag("valid")
+	public void buildWithApiClient() throws Exception {
+		Client apiClientMock = mock(Client.class);
+		Gemini gemini = Gemini.builder().modelName("gemini-2.0").apiClient(apiClientMock).build();
+		assertEquals("gemini-2.0", gemini.model());
+		Field f = Gemini.class.getDeclaredField("apiClient");
+		f.setAccessible(true);
+		Object value = f.get(gemini);
+		assertSame(apiClientMock, value);
+	}
+
+	@Test
+	@Tag("valid")
+	public void buildWithApiKey() throws Exception {
+		String apiKey = "test-key";
+		Gemini gemini = Gemini.builder().modelName("gemini-2.0").apiKey(apiKey).build();
+		assertEquals("gemini-2.0", gemini.model());
+		Field f = Gemini.class.getDeclaredField("apiKey");
+		f.setAccessible(true);
+		Object value = f.get(gemini);
+		assertEquals(apiKey, (String) value);
+	}
+
+	@Test
+	@Tag("valid")
+	public void buildWithVertexCredentials() throws Exception {
+		VertexCredentials vc = VertexCredentials.builder().build();
+		Gemini gemini = Gemini.builder().modelName("gemini-2.0").vertexCredentials(vc).build();
+		assertEquals("gemini-2.0", gemini.model());
+		Field f = Gemini.class.getDeclaredField("vertexCredentials");
+		f.setAccessible(true);
+		Object value = f.get(gemini);
+		assertSame(vc, value);
+	}
+
+	@Test
+	@Tag("integration")
+	public void buildWithDefaultClient() throws Exception {
+		Gemini gemini = Gemini.builder().modelName("gemini-2.0").build();
+		assertEquals("gemini-2.0", gemini.model());
+		Field f = Gemini.class.getDeclaredField("apiClient");
+		f.setAccessible(true);
+		Object value = f.get(gemini);
+		assertNotNull(value);
+		assertTrue(value instanceof Client);
+	}
+
+	@Test
+	@Tag("invalid")
+	public void buildWithNullModelNameThrows() {
+		assertThrows(NullPointerException.class, () -> Gemini.builder().modelName(null).build());
+	}
+
+}