Each inner list contains a pair of start and end delimiters. This supports multiple pairs of - * delimiters. + *
Each inner list should contain a pair of strings: the start delimiter and the end delimiter. + * This structure supports multiple pairs of delimiters. For example, `[["```tool_code\n", + * "\n```"], ["```python\n", "\n```"]]` defines two sets of delimiters. * - *
For example, the delimiter ('```python\n', '\n```') can be used to identify code blocks with - * the following format: - * - *
```python - * - *
print("hello") - * - *
``` + *
Defaults to `[["```tool_code\n", "\n```"], ["```python\n", "\n```"]]`.
*/
public ImmutableList This implementation uses blocking I/O to interact with Docker via {@code docker-java} library.
+ */
public class ContainerCodeExecutor extends BaseCodeExecutor {
private static final Logger logger = LoggerFactory.getLogger(ContainerCodeExecutor.class);
private static final String DEFAULT_IMAGE_TAG = "adk-code-executor:latest";
@@ -91,6 +95,11 @@ public boolean optimizeDataFile() {
return false;
}
+ /**
+ * {@inheritDoc}
+ *
+ * This method blocks waiting for container execution to complete.
+ */
@Override
public CodeExecutionResult executeCode(
InvocationContext invocationContext, CodeExecutionInput codeExecutionInput) {
diff --git a/core/src/test/java/com/google/adk/codeexecutors/BaseCodeExecutorTest.java b/core/src/test/java/com/google/adk/codeexecutors/BaseCodeExecutorTest.java
new file mode 100644
index 00000000..be66ec44
--- /dev/null
+++ b/core/src/test/java/com/google/adk/codeexecutors/BaseCodeExecutorTest.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2026 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.
+ */
+
+package com.google.adk.codeexecutors;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import com.google.adk.agents.InvocationContext;
+import com.google.adk.codeexecutors.CodeExecutionUtils.CodeExecutionInput;
+import com.google.adk.codeexecutors.CodeExecutionUtils.CodeExecutionResult;
+import com.google.common.collect.ImmutableList;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+@RunWith(JUnit4.class)
+public class BaseCodeExecutorTest {
+
+ private static class TestCodeExecutor extends BaseCodeExecutor {
+ @Override
+ public CodeExecutionResult executeCode(
+ InvocationContext invocationContext, CodeExecutionInput codeExecutionInput) {
+ return null;
+ }
+ }
+
+ @Test
+ public void baseCodeExecutor_defaultValues() {
+ TestCodeExecutor codeExecutor = new TestCodeExecutor();
+ assertThat(codeExecutor.optimizeDataFile()).isFalse();
+ assertThat(codeExecutor.stateful()).isFalse();
+ assertThat(codeExecutor.errorRetryAttempts()).isEqualTo(2);
+ assertThat(codeExecutor.codeBlockDelimiters())
+ .isEqualTo(
+ ImmutableList.of(
+ ImmutableList.of("```tool_code\n", "\n```"),
+ ImmutableList.of("```python\n", "\n```")));
+ assertThat(codeExecutor.executionResultDelimiters())
+ .isEqualTo(ImmutableList.of("```tool_output\n", "\n```"));
+ }
+}
diff --git a/core/src/test/java/com/google/adk/codeexecutors/BuiltInCodeExecutorTest.java b/core/src/test/java/com/google/adk/codeexecutors/BuiltInCodeExecutorTest.java
new file mode 100644
index 00000000..54306fa2
--- /dev/null
+++ b/core/src/test/java/com/google/adk/codeexecutors/BuiltInCodeExecutorTest.java
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2026 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.
+ */
+
+package com.google.adk.codeexecutors;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.junit.Assert.assertThrows;
+
+import com.google.adk.agents.InvocationContext;
+import com.google.adk.codeexecutors.CodeExecutionUtils.CodeExecutionInput;
+import com.google.adk.models.LlmRequest;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+@RunWith(JUnit4.class)
+public final class BuiltInCodeExecutorTest {
+
+ private BuiltInCodeExecutor codeExecutor;
+
+ @Before
+ public void setUp() {
+ codeExecutor = new BuiltInCodeExecutor();
+ }
+
+ @Test
+ public void executeCode_throwsUnsupportedOperationException() {
+ assertThrows(
+ UnsupportedOperationException.class,
+ () ->
+ codeExecutor.executeCode(
+ InvocationContext.builder().build(),
+ CodeExecutionInput.builder().code("code").build()));
+ }
+
+ @Test
+ public void processLlmRequest_gemini2Model_addsCodeExecutionTool() {
+ LlmRequest.Builder llmRequestBuilder = LlmRequest.builder().model("gemini-2.0-flash-exp");
+ codeExecutor.processLlmRequest(llmRequestBuilder);
+ LlmRequest llmRequest = llmRequestBuilder.build();
+ assertThat(llmRequest.config()).isPresent();
+ assertThat(llmRequest.config().get().tools()).isPresent();
+ assertThat(llmRequest.config().get().tools().get()).hasSize(1);
+ assertThat(llmRequest.config().get().tools().get().get(0).codeExecution()).isPresent();
+ }
+
+ @Test
+ public void processLlmRequest_nonGemini2Model_throwsIllegalArgumentException() {
+ LlmRequest.Builder llmRequestBuilder = LlmRequest.builder().model("gemini-1.5-pro");
+ assertThrows(
+ IllegalArgumentException.class, () -> codeExecutor.processLlmRequest(llmRequestBuilder));
+ }
+}
diff --git a/core/src/test/java/com/google/adk/codeexecutors/CodeExecutionUtilsTest.java b/core/src/test/java/com/google/adk/codeexecutors/CodeExecutionUtilsTest.java
new file mode 100644
index 00000000..9cbb4ed8
--- /dev/null
+++ b/core/src/test/java/com/google/adk/codeexecutors/CodeExecutionUtilsTest.java
@@ -0,0 +1,116 @@
+/*
+ * Copyright 2026 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.
+ */
+
+package com.google.adk.codeexecutors;
+
+import static com.google.common.truth.Truth8.assertThat;
+
+import com.google.adk.codeexecutors.CodeExecutionUtils.CodeExecutionResult;
+import com.google.common.collect.ImmutableList;
+import com.google.genai.types.CodeExecutionResult.Outcome;
+import com.google.genai.types.Content;
+import com.google.genai.types.Part;
+import java.util.Optional;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+@RunWith(JUnit4.class)
+public final class CodeExecutionUtilsTest {
+
+ @Test
+ public void buildCodeExecutionResultPart_success() {
+ CodeExecutionResult result = CodeExecutionResult.builder().stdout("output").build();
+ Part part = CodeExecutionUtils.buildCodeExecutionResultPart(result);
+ assertThat(part.codeExecutionResult()).isPresent();
+ assertThat(part.codeExecutionResult().get().outcome()).hasValue(Outcome.OK);
+ assertThat(part.codeExecutionResult().get().output())
+ .hasValue("Code execution result:\noutput\n");
+ }
+
+ @Test
+ public void buildCodeExecutionResultPart_failure() {
+ CodeExecutionResult result = CodeExecutionResult.builder().stderr("error").build();
+ Part part = CodeExecutionUtils.buildCodeExecutionResultPart(result);
+ assertThat(part.codeExecutionResult()).isPresent();
+ assertThat(part.codeExecutionResult().get().outcome()).hasValue(Outcome.FAILED);
+ assertThat(part.codeExecutionResult().get().output()).hasValue("error");
+ }
+
+ @Test
+ public void buildExecutableCodePart_success() {
+ Part part = CodeExecutionUtils.buildExecutableCodePart("code");
+ assertThat(part.executableCode()).isPresent();
+ assertThat(part.executableCode().get().code()).hasValue("code");
+ }
+
+ @Test
+ public void convertCodeExecutionParts_executableCode() {
+ Content content =
+ Content.builder()
+ .parts(ImmutableList.of(CodeExecutionUtils.buildExecutableCodePart("code")))
+ .role("model")
+ .build();
+ Content newContent =
+ CodeExecutionUtils.convertCodeExecutionParts(
+ content, ImmutableList.of("```", "```"), ImmutableList.of());
+ assertThat(newContent.parts().get()).hasSize(1);
+ assertThat(newContent.parts().get().get(0).text()).hasValue("```code```");
+ }
+
+ @Test
+ public void convertCodeExecutionParts_codeExecutionResult() {
+ Content content =
+ Content.builder()
+ .parts(
+ ImmutableList.of(
+ CodeExecutionUtils.buildCodeExecutionResultPart(
+ CodeExecutionResult.builder().stdout("output").build())))
+ .role("model")
+ .build();
+ Content newContent =
+ CodeExecutionUtils.convertCodeExecutionParts(
+ content, ImmutableList.of(), ImmutableList.of("'''", "'''"));
+ assertThat(newContent.parts().get()).hasSize(1);
+ assertThat(newContent.parts().get().get(0).text().get()).contains("'''");
+ assertThat(newContent.parts().get().get(0).text().get()).contains("output");
+ }
+
+ @Test
+ public void extractCodeAndTruncateContent_executableCode() {
+ Content.Builder contentBuilder =
+ Content.builder()
+ .parts(ImmutableList.of(CodeExecutionUtils.buildExecutableCodePart("code")))
+ .role("model");
+ Optional