Add repro test for #3133.

This CL adds a repro for issue #3133, where Dagger throws an unexpected exception when a custom map key is no longer on the classpath.

A follow-up CL will fix the issue to return a better error message.

RELNOTES=N/A
PiperOrigin-RevId: 418966521

javatests/artifacts/dagger/build-tests/src/test/java/buildtests/TransitiveMapKeyTest.java

@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2021 The Dagger Authors.
+ *
+ * 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 buildtests;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.gradle.testkit.runner.TaskOutcome.SUCCESS;
+
+import java.io.File;
+import java.io.IOException;
+import org.gradle.testkit.runner.BuildResult;
+import org.gradle.testkit.runner.GradleRunner;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.TemporaryFolder;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+// This is a regression test for https://github.com/google/dagger/issues/3133
+@RunWith(JUnit4.class)
+public class TransitiveMapKeyTest {
+  @Rule public TemporaryFolder folder = new TemporaryFolder();
+
+  @Test
+  public void testTransitiveMapKey_WithImplementation() throws IOException {
+    BuildResult result = setupRunnerWith("implementation").buildAndFail();
+
+    // TODO(bcorso): This is a repro of https://github.com/google/dagger/issues/3133.
+    // We should update the error message to include the provision method.
+    assertThat(result.getOutput()).contains("Task :app:compileJava FAILED");
+    assertThat(result.getOutput())
+        .contains("Caused by: java.util.NoSuchElementException: No value present");
+  }
+
+  @Test
+  public void testTransitiveMapKey_WithApi() throws IOException {
+    // Test that if we use an "api" dependency for the custom map key things work properly.
+    BuildResult result = setupRunnerWith("api").build();
+    assertThat(result.task(":app:assemble").getOutcome()).isEqualTo(SUCCESS);
+  }
+
+  private GradleRunner setupRunnerWith(String dependencyType) throws IOException {
+    File projectDir = folder.getRoot();
+    GradleModule.create(projectDir)
+        .addSettingsFile(
+            "include 'app'",
+            "include 'library1'",
+            "include 'library2'")
+        .addBuildFile(
+            "buildscript {",
+            "  ext {",
+            String.format("dagger_version = \"%s\"", System.getProperty("dagger_version")),
+            "  }",
+            "}",
+            "",
+            "allprojects {",
+            "  repositories {",
+            "    jcenter()",
+            "    mavenCentral()",
+            "    mavenLocal()",
+            "  }",
+            "}");
+
+    GradleModule.create(projectDir, "app")
+        .addBuildFile(
+            "plugins {",
+            "  id 'java'",
+            "  id 'application'",
+            "}",
+            "dependencies {",
+            "  implementation project(':library1')",
+            "  implementation \"com.google.dagger:dagger:$dagger_version\"",
+            "  annotationProcessor \"com.google.dagger:dagger-compiler:$dagger_version\"",
+            "}")
+        .addSrcFile(
+            "MyComponent.java",
+            "package app;",
+            "",
+            "import dagger.Component;",
+            "import library1.MyModule;",
+            "import java.util.Map;",
+            "",
+            "@Component(modules = MyModule.class)",
+            "public interface MyComponent {",
+            "  Map<String, String> multiMap();",
+            "}");
+
+    GradleModule.create(projectDir, "library1")
+        .addBuildFile(
+            "plugins {",
+            "  id 'java'",
+            "  id 'java-library'",
+            "}",
+            "dependencies {",
+            dependencyType + " project(':library2')",
+            "  implementation \"com.google.dagger:dagger:$dagger_version\"",
+            "  annotationProcessor \"com.google.dagger:dagger-compiler:$dagger_version\"",
+            "}")
+        .addSrcFile(
+            "MyModule.java",
+            "package library1;",
+            "",
+            "import dagger.Module;",
+            "import dagger.Provides;",
+            "import dagger.multibindings.IntoMap;",
+            "import library2.MyMapKey;",
+            "",
+            "@Module",
+            "public interface MyModule {",
+            "  @Provides",
+            "  @IntoMap",
+            "  @MyMapKey(\"some-key\")",
+            "  static String provideString() {",
+            "    return \"\";",
+            "  }",
+            "}");
+
+    GradleModule.create(projectDir, "library2")
+        .addBuildFile(
+            "plugins {",
+            "  id 'java'",
+            "  id 'java-library'",
+            "}",
+            "dependencies {",
+            "  implementation \"com.google.dagger:dagger:$dagger_version\"",
+            "  annotationProcessor \"com.google.dagger:dagger-compiler:$dagger_version\"",
+            "}")
+        .addSrcFile(
+            "MyMapKey.java",
+            "package library2;",
+            "",
+            "import dagger.MapKey;",
+            "",
+            "@MapKey",
+            "public @interface MyMapKey {",
+            "  String value();",
+            "}");
+
+    return GradleRunner.create()
+        .withArguments("--stacktrace", "build")
+        .withProjectDir(projectDir);
+  }
+}