// Copyright 2017 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.benchmark.codegenerator;
import static com.google.common.truth.Truth.assertThat;
import static org.junit.Assert.assertNotNull;
import com.google.common.collect.ImmutableSet;
import java.io.File;
import java.io.IOException;
import java.nio.file.Path;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Test for {@link JavaCodeGenerator}. */
@RunWith(JUnit4.class)
public class JavaCodeGeneratorTest {
@Rule public TemporaryFolder folder = new TemporaryFolder();
@Test
public void testGenerateNewProject() throws IOException {
File createdFolder = folder.newFolder("GenerateNewProject");
Path dir = createdFolder.toPath();
JavaCodeGenerator javaCodeGenerator = new JavaCodeGenerator();
javaCodeGenerator.generateNewProject(dir.toString(), ImmutableSet.of(
JavaCodeGenerator.TARGET_A_FEW_FILES,
JavaCodeGenerator.TARGET_LONG_CHAINED_DEPS,
JavaCodeGenerator.TARGET_MANY_FILES,
JavaCodeGenerator.TARGET_PARALLEL_DEPS));
// Check dir contains 4 project directories
File[] filesList = dir.toFile().listFiles();
assertNotNull(filesList);
ImmutableSet<String> filenames = fileArrayToImmutableSet(filesList);
assertThat(filenames).containsExactly(
JavaCodeGenerator.TARGET_A_FEW_FILES,
JavaCodeGenerator.TARGET_LONG_CHAINED_DEPS,
JavaCodeGenerator.TARGET_MANY_FILES,
JavaCodeGenerator.TARGET_PARALLEL_DEPS);
// Target 1: a few files
checkProjectPathContains(dir, JavaCodeGenerator.TARGET_A_FEW_FILES);
checkSimpleTarget(
dir, JavaCodeGenerator.TARGET_A_FEW_FILES, javaCodeGenerator.getSizeAFewFiles());
// Target 2: many files
checkProjectPathContains(dir, JavaCodeGenerator.TARGET_MANY_FILES);
checkSimpleTarget(
dir, JavaCodeGenerator.TARGET_MANY_FILES, javaCodeGenerator.getSizeManyFiles());
// Target 3: long chained deps
checkProjectPathContains(dir, JavaCodeGenerator.TARGET_LONG_CHAINED_DEPS);
checkDepsTarget(
dir, JavaCodeGenerator.TARGET_LONG_CHAINED_DEPS,
javaCodeGenerator.getSizeLongChainedDeps());
// Target 4: parallel deps
checkProjectPathContains(dir, JavaCodeGenerator.TARGET_PARALLEL_DEPS);
checkDepsTarget(
dir, JavaCodeGenerator.TARGET_PARALLEL_DEPS, javaCodeGenerator.getSizeParallelDeps());
}
private static ImmutableSet<String> fileArrayToImmutableSet(File[] files) {
ImmutableSet.Builder<String> builder = ImmutableSet.builder();
for (File file : files) {
builder.add(file.getName());
}
return builder.build();
}
private static void checkProjectPathContains(Path root, String targetName) {
// Check project dir contains BUILD and com
File[] filesList = root.resolve(targetName).toFile().listFiles();
assertNotNull(filesList);
ImmutableSet<String> filenames = fileArrayToImmutableSet(filesList);
assertThat(filenames).containsExactly("BUILD", "com");
// Check project dir contains com/example
filesList = root.resolve(targetName).resolve("com").toFile().listFiles();
assertNotNull(filesList);
filenames = fileArrayToImmutableSet(filesList);
assertThat(filenames).containsExactly("example");
}
private static void checkSimpleTarget(Path root, String targetName, int targetSize) {
// Check Java files
File[] filesList =
root.resolve(targetName).resolve("com/example/generated").toFile().listFiles();
assertNotNull(filesList);
ImmutableSet<String> filenames = fileArrayToImmutableSet(filesList);
ImmutableSet.Builder<String> randomClassNames = ImmutableSet.builder();
randomClassNames.add("Main.java");
for (int i = 0; i < targetSize; ++i) {
randomClassNames.add("RandomClass" + i + ".java");
}
assertThat(filenames).containsExactlyElementsIn(randomClassNames.build());
}
private static void checkDepsTarget(Path root, String targetName, int targetSize) {
// Check Java files
for (int i = 1; i < targetSize; ++i) {
File[] filesList =
root.resolve(targetName).resolve("com/example/deps" + i).toFile().listFiles();
assertNotNull(filesList);
ImmutableSet<String> filenames = fileArrayToImmutableSet(filesList);
assertThat(filenames).containsExactly("Deps" + i + ".java");
}
File[] filesList =
root.resolve(targetName).resolve("com/example/generated").toFile().listFiles();
assertNotNull(filesList);
ImmutableSet<String> filenames = fileArrayToImmutableSet(filesList);
assertThat(filenames).containsExactly("Main.java");
}
}