1 files changed, 142 insertions, 0 deletions
diff --git a/src/java_tools/import_deps_checker/javatests/com/google/devtools/build/importdeps/ClassCacheTest.java b/src/java_tools/import_deps_checker/javatests/com/google/devtools/build/importdeps/ClassCacheTest.java
new file mode 100644
index 0000000000..241afd98c6
--- /dev/null
+++ b/src/java_tools/import_deps_checker/javatests/com/google/devtools/build/importdeps/ClassCacheTest.java
@@ -0,0 +1,142 @@
+// Copyright 2018 The Bazel Authors. All rights reserved.
+//
+// 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.devtools.build.importdeps;
+
+import static com.google.common.truth.Truth.assertThat;
+import static com.google.common.truth.Truth.assertWithMessage;
+import static org.junit.Assert.assertThrows;
+
+import com.google.common.collect.ImmutableList;
+import com.google.devtools.build.importdeps.AbstractClassEntryState.ExistingState;
+import java.io.IOException;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+/** Test for {@link ClassCache}. */
+@RunWith(JUnit4.class)
+public class ClassCacheTest extends AbstractClassCacheTest {
+
+  @Test
+  public void testLibraryJar() throws Exception {
+    try (ClassCache cache = new ClassCache(bootclasspath, libraryJar)) {
+      assertCache(
+          cache,
+          libraryJarPositives,
+          combine(
+              libraryInterfacePositives,
+              libraryAnnotationsJarPositives,
+              libraryExceptionJarPositives));
+    }
+  }
+
+  @Test
+  public void testClientJarWithSuperClasses() throws IOException {
+    try (ClassCache cache =
+        new ClassCache(bootclasspath, clientJar, libraryJar, libraryInterfaceJar)) {
+      assertCache(
+          cache,
+          clientJarPositives,
+          combine(libraryExceptionJarPositives, libraryAnnotationsJarPositives));
+    }
+  }
+
+  @Test
+  public void testClientJarWithoutSuperClasses() throws IOException {
+    try (ClassCache cache = new ClassCache(bootclasspath, clientJar)) {
+      // Client should be incomplete, as its parent class and interfaces are not available on the
+      // classpath. The following is the resolution path.
+      {
+        AbstractClassEntryState state = cache.getClassState(PACKAGE_NAME + "Client");
+        assertThat(state.isIncompleteState()).isTrue();
+
+        ImmutableList<String> failureCause = state.asIncompleteState().getResolutionFailurePath();
+        assertThat(failureCause).containsExactly(PACKAGE_NAME + "Library").inOrder();
+      }
+      assertThat(cache.getClassState(PACKAGE_NAME + "Client").isIncompleteState()).isTrue();
+      assertThat(cache.getClassState(PACKAGE_NAME + "Client$NestedAnnotation"))
+          .isInstanceOf(ExistingState.class);
+      assertThat(cache.getClassState(PACKAGE_NAME + "Client$NestedAnnotation").isExistingState())
+          .isTrue();
+      assertThat(cache.getClassState("java/lang/Object").isExistingState()).isTrue();
+      assertThat(cache.getClassState("java/util/List").isExistingState()).isTrue();
+    }
+  }
+
+  @Test
+  public void testLibraryException() throws IOException {
+    try (ClassCache cache = new ClassCache(bootclasspath, libraryExceptionJar)) {
+      assertCache(
+          cache,
+          libraryExceptionJarPositives,
+          combine(libraryAnnotationsJarPositives, libraryInterfacePositives, libraryJarPositives));
+    }
+  }
+
+  @Test
+  public void testLibraryAnnotations() throws IOException {
+    try (ClassCache cache = new ClassCache(bootclasspath, libraryAnnotationsJar)) {
+      assertCache(
+          cache,
+          libraryAnnotationsJarPositives,
+          combine(libraryExceptionJarPositives, libraryInterfacePositives, libraryJarPositives));
+    }
+  }
+
+  @Test
+  public void testCannotAccessClosedCache() throws IOException {
+    ClassCache cache = new ClassCache(ImmutableList.of());
+    cache.close();
+    cache.close(); // Can close multiple times.
+    assertThrows(IllegalStateException.class, () -> cache.getClassState("empty"));
+  }
+
+  /**
+   * A regression test. First query the super class, which does not exist. Then query the subclass,
+   * which does not exist either.
+   */
+  @Test
+  public void testSuperNotExistThenSubclassNotExist() throws IOException {
+    try (ClassCache cache =
+        new ClassCache(
+            libraryJar, libraryJar, libraryAnnotationsJar, libraryInterfaceJar, clientJar)) {
+      assertThat(
+              cache
+                  .getClassState("com/google/devtools/build/importdeps/testdata/Library$Class9")
+                  .isIncompleteState())
+          .isTrue();
+      assertThat(
+              cache
+                  .getClassState("com/google/devtools/build/importdeps/testdata/Library$Class10")
+                  .isIncompleteState())
+          .isTrue();
+    }
+  }
+
+  private void assertCache(
+      ClassCache cache, ImmutableList<String> positives, ImmutableList<String> negatives) {
+    for (String positive : positives) {
+      AbstractClassEntryState state = cache.getClassState(positive);
+      assertWithMessage(positive).that(state.isExistingState()).isTrue();
+      assertWithMessage(positive).that(state.asExistingState()).isInstanceOf(ExistingState.class);
+      assertWithMessage(positive)
+          .that(state.asExistingState().classInfo().get().internalName())
+          .isEqualTo(positive);
+    }
+    for (String negative : negatives) {
+      AbstractClassEntryState state = cache.getClassState(negative);
+      assertWithMessage(negative).that(state.isExistingState()).isFalse();
+    }
+  }
+}