| /* |
| * Copyright 2020 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.android.desugar.io; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| |
| import com.google.common.collect.ImmutableSet; |
| import com.google.devtools.build.android.desugar.langmodel.ClassName; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** |
| * Unit tests for {@link FileBasedTypeReferenceClosure}. |
| * |
| * <p>The set of tests is based on the following type reference graph. For example A(lpha) contains |
| * direct type symbol references to B(ravo) and C(harlie). |
| * |
| * <pre> |
| * A |
| * ↓ ↘ |
| * B C |
| * ↘ ↕ |
| * D |
| * ↓ |
| * E |
| * </pre> |
| */ |
| @RunWith(JUnit4.class) |
| public class FileBasedTypeReferenceClosureTest { |
| |
| private final ClassName alpha = ClassName.create("desugar/io/testlib/Alpha"); |
| private final ClassName bravo = ClassName.create("desugar/io/testlib/Bravo"); |
| private final ClassName charlie = ClassName.create("desugar/io/testlib/Charlie"); |
| private final ClassName delta = ClassName.create("desugar/io/testlib/Delta"); |
| private final ClassName echo = ClassName.create("desugar/io/testlib/Echo"); |
| private final ClassName implicitTypeRef = |
| ClassName.create("desugar/io/testlib/ImplicitTypeReferenceSource"); |
| |
| @Test |
| public void findReachableReferencedTypes_fromEmpty() { |
| FileBasedTypeReferenceClosure fileBasedTypeReferenceClosure = |
| new FileBasedTypeReferenceClosure( |
| className -> className.hasAnyPackagePrefix("desugar/io/testlib/"), |
| new ResourceBasedClassFiles()); |
| assertThat(fileBasedTypeReferenceClosure.findReachableReferencedTypes(ImmutableSet.of())) |
| .isEmpty(); |
| } |
| |
| @Test |
| public void findReachableReferencedTypes_fromAlpha() { |
| FileBasedTypeReferenceClosure fileBasedTypeReferenceClosure = |
| new FileBasedTypeReferenceClosure( |
| className -> className.hasAnyPackagePrefix("desugar/io/testlib/"), |
| new ResourceBasedClassFiles()); |
| assertThat(fileBasedTypeReferenceClosure.findReachableReferencedTypes(ImmutableSet.of(alpha))) |
| .containsExactly(alpha, bravo, charlie, delta, echo); |
| } |
| |
| @Test |
| public void findReachableReferencedTypes_fromBravo() { |
| FileBasedTypeReferenceClosure fileBasedTypeReferenceClosure = |
| new FileBasedTypeReferenceClosure( |
| className -> className.hasAnyPackagePrefix("desugar/io/testlib/"), |
| new ResourceBasedClassFiles()); |
| assertThat(fileBasedTypeReferenceClosure.findReachableReferencedTypes(ImmutableSet.of(bravo))) |
| .containsExactly(bravo, charlie, delta, echo); |
| } |
| |
| @Test |
| public void findReachableReferencedTypes_fromCharlie() { |
| FileBasedTypeReferenceClosure fileBasedTypeReferenceClosure = |
| new FileBasedTypeReferenceClosure( |
| className -> className.hasAnyPackagePrefix("desugar/io/testlib/"), |
| new ResourceBasedClassFiles()); |
| assertThat(fileBasedTypeReferenceClosure.findReachableReferencedTypes(ImmutableSet.of(charlie))) |
| .containsExactly(charlie, delta, echo); |
| } |
| |
| @Test |
| public void findReachableReferencedTypes_fromDelta() { |
| FileBasedTypeReferenceClosure fileBasedTypeReferenceClosure = |
| new FileBasedTypeReferenceClosure( |
| className -> className.hasAnyPackagePrefix("desugar/io/testlib/"), |
| new ResourceBasedClassFiles()); |
| assertThat(fileBasedTypeReferenceClosure.findReachableReferencedTypes(ImmutableSet.of(delta))) |
| .containsExactly(charlie, delta, echo); |
| } |
| |
| @Test |
| public void findReachableReferencedTypes_fromEcho() { |
| FileBasedTypeReferenceClosure fileBasedTypeReferenceClosure = |
| new FileBasedTypeReferenceClosure( |
| className -> className.hasAnyPackagePrefix("desugar/io/testlib/"), |
| new ResourceBasedClassFiles()); |
| assertThat(fileBasedTypeReferenceClosure.findReachableReferencedTypes(ImmutableSet.of(echo))) |
| .containsExactly(echo); |
| } |
| |
| @Test |
| public void findReachableReferencedTypes_fromAll() { |
| FileBasedTypeReferenceClosure fileBasedTypeReferenceClosure = |
| new FileBasedTypeReferenceClosure( |
| className -> className.hasAnyPackagePrefix("desugar/io/testlib/"), |
| new ResourceBasedClassFiles()); |
| assertThat( |
| fileBasedTypeReferenceClosure.findReachableReferencedTypes( |
| ImmutableSet.of(alpha, bravo, charlie, delta, echo))) |
| .containsExactly(alpha, bravo, charlie, delta, echo); |
| } |
| |
| @Test |
| public void findReachableReferencedTypes_implicitTypeReference() { |
| FileBasedTypeReferenceClosure fileBasedTypeReferenceClosure = |
| new FileBasedTypeReferenceClosure( |
| className -> className.hasAnyPackagePrefix("desugar/io/testlib/", "java/io/"), |
| new ResourceBasedClassFiles()); |
| ImmutableSet<ClassName> reachableReferencedTypes = |
| fileBasedTypeReferenceClosure.findReachableReferencedTypes( |
| ImmutableSet.of(implicitTypeRef)); |
| assertThat(reachableReferencedTypes).contains(ClassName.create("java/io/PrintStream")); |
| } |
| } |