| // 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.android; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| import static org.junit.Assert.assertThrows; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.Lists; |
| import com.google.devtools.build.android.AndroidResourceMerger.MergingException; |
| import java.io.IOException; |
| import java.nio.file.FileSystem; |
| import java.nio.file.FileSystems; |
| import java.nio.file.FileVisitOption; |
| import java.nio.file.FileVisitResult; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.SimpleFileVisitor; |
| import java.nio.file.attribute.BasicFileAttributes; |
| import java.util.ArrayList; |
| import java.util.EnumSet; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests for {@link DensitySpecificResourceFilter}. */ |
| @RunWith(JUnit4.class) |
| public class DensitySpecificResourceFilterTest { |
| |
| private Path tmp; |
| |
| @Test public void testNoDensityResources() throws Exception { |
| checkTransformedResources( |
| ImmutableList.of( |
| "test/res/layout/derp.xml", |
| "test/res/layout-ldrtl/derp.png", |
| "test/res/layout-ldrtl-xhdpi/derp.png", |
| "test/res/drawable-en/test.png"), |
| ImmutableList.of( |
| "test/res/layout/derp.xml", |
| "test/res/layout-ldrtl/derp.png", |
| "test/res/layout-ldrtl-xhdpi/derp.png", |
| "test/res/drawable-en/test.png"), |
| ImmutableList.of("xxhdpi")); |
| } |
| |
| @Test public void testDontFilterXml() throws Exception { |
| checkTransformedResources( |
| ImmutableList.of( |
| "test/res/drawable-xxhdpi/derp.xml", |
| "test/res/drawable-ldpi/derp.xml", |
| "test/res/drawable-en/test.png"), |
| ImmutableList.of( |
| "test/res/drawable-xxhdpi/derp.xml", |
| "test/res/drawable-ldpi/derp.xml", |
| "test/res/drawable-en/test.png"), |
| ImmutableList.of("xxhdpi")); |
| } |
| |
| @Test public void testNoDpiNoFilter() throws Exception { |
| checkTransformedResources( |
| ImmutableList.of( |
| "test/res/drawable-nodpi/test.png", |
| "test/res/drawable-xxhdpi/test.png", |
| "test/res/drawable-ldpi/test.png"), |
| ImmutableList.of( |
| "test/res/drawable-nodpi/test.png", |
| "test/res/drawable-xxhdpi/test.png"), |
| ImmutableList.of("xxhdpi")); |
| } |
| |
| @Test public void testChoosesExactDensity() throws Exception { |
| checkTransformedResources( |
| ImmutableList.of( |
| "test/res/drawable-nodpi/test.png", |
| "test/res/drawable/test.png", |
| "test/res/drawable-mdpi/derp.png", |
| "test/res/drawable-xxhdpi/test.png", |
| "test/res/drawable-mdpi/test.png", |
| "test/res/drawable-xxxhdpi/test.png"), |
| ImmutableList.of( |
| "test/res/drawable-nodpi/test.png", |
| "test/res/drawable/test.png", |
| "test/res/drawable-mdpi/derp.png", |
| "test/res/drawable-xxhdpi/test.png"), |
| ImmutableList.of("xxhdpi")); |
| } |
| |
| @Test public void testMultipleDensities() throws Exception { |
| checkTransformedResources( |
| ImmutableList.of( |
| "test/res/drawable-mdpi/test.png", |
| "test/res/drawable-xxhdpi/test.png", |
| "test/res/drawable-xxxhdpi/test.png"), |
| ImmutableList.of( |
| "test/res/drawable-xxhdpi/test.png", |
| "test/res/drawable-xxxhdpi/test.png"), |
| ImmutableList.of("xxhdpi", "xxxhdpi")); |
| } |
| |
| @Test public void testNonStandardDensity() throws Exception { |
| checkTransformedResources( |
| ImmutableList.of( |
| "test/res/drawable-mdpi/test.png", |
| "test/res/drawable-hdpi/test.png", |
| "test/res/drawable-280dpi/test.png", |
| "test/res/drawable-xhdpi/test.png", |
| "test/res/drawable-340dpi/test.png", |
| "test/res/drawable-xxhdpi/test.png"), |
| ImmutableList.of( |
| "test/res/drawable-280dpi/test.png", |
| "test/res/drawable-340dpi/test.png"), |
| ImmutableList.of("280dpi", "340dpi")); |
| } |
| |
| @Test public void testUnknownDensityFails() { |
| assertThrows( |
| MergingException.class, |
| () -> |
| checkTransformedResources( |
| ImmutableList.<String>of(), |
| ImmutableList.<String>of(), |
| ImmutableList.of("xxhdpi", "322dpi"))); |
| } |
| |
| @Test public void testPrefersHigherQualityWhenAffinityExact() throws Exception { |
| checkTransformedResources( |
| ImmutableList.of( |
| "test/res/drawable-xxxhdpi/test.png", |
| "test/res/drawable-mdpi/test.png"), |
| ImmutableList.of( |
| "test/res/drawable-xxxhdpi/test.png"), |
| ImmutableList.of("xhdpi")); |
| } |
| |
| @Test public void testPrefersExactlyDoubleDensity() throws Exception { |
| checkTransformedResources( |
| ImmutableList.of( |
| "test/res/drawable-hdpi/test.png", |
| "test/res/drawable-mdpi/test.png"), |
| ImmutableList.of( |
| "test/res/drawable-hdpi/test.png"), |
| ImmutableList.of("ldpi")); |
| } |
| |
| |
| @Test public void testGroupsByQualifiers() throws Exception { |
| checkTransformedResources( |
| ImmutableList.of( |
| "test/res/drawable-en-ldrtl-hdpi/test.png", |
| "test/res/drawable-mdpi/test.png"), |
| ImmutableList.of( |
| "test/res/drawable-en-ldrtl-hdpi/test.png", |
| "test/res/drawable-mdpi/test.png"), |
| ImmutableList.of("ldpi")); |
| } |
| |
| @Test public void testQualifiers() throws Exception { |
| // This list checks that we correctly grab a -xhdpi-v19 version of the drawable when it is not |
| // present at our requested density. |
| checkTransformedResources( |
| ImmutableList.of( |
| "res/drawable-mdpi-v11/btn_edit_pressed.png", |
| "res/drawable-mdpi/btn_edit_pressed.png", |
| "res/drawable-xhdpi-v19/btn_edit_pressed.png", |
| "res/drawable-tvdpi-v11/btn_edit_pressed.png", |
| "res/drawable-hdpi-v11/btn_edit_pressed.png", |
| "res/drawable-xhdpi-v11/btn_edit_pressed.png", |
| "res/drawable-xxhdpi-v19/btn_edit_pressed.png", |
| "res/drawable-hdpi/btn_edit_pressed.png", |
| "res/drawable-tvdpi/btn_edit_pressed.png", |
| "res/drawable-xxhdpi/btn_edit_pressed.png", |
| "res/drawable-xhdpi/btn_edit_pressed.png", |
| "res/drawable-tvdpi-v19/btn_edit_pressed.png", |
| "res/drawable-hdpi-v19/btn_edit_pressed.png", |
| "res/drawable-xxhdpi-v11/btn_edit_pressed.png"), |
| ImmutableList.of( |
| "res/drawable-mdpi-v11/btn_edit_pressed.png", |
| "res/drawable-mdpi/btn_edit_pressed.png", |
| "res/drawable-xhdpi-v19/btn_edit_pressed.png"), |
| ImmutableList.of("mdpi")); |
| } |
| |
| @Test public void fullIntegration() throws Exception { |
| createFiles( |
| "res/drawable-mdpi-v11/btn_edit_pressed.png", |
| "res/drawable-mdpi/btn_edit_pressed.png", |
| "res/drawable-xhdpi-v19/btn_edit_pressed.png", |
| "res/drawable-tvdpi-v11/btn_edit_pressed.png", |
| "res/drawable-hdpi-v11/btn_edit_pressed.png", |
| "res/drawable-xhdpi-v11/btn_edit_pressed.png", |
| "res/drawable-xxhdpi-v19/btn_edit_pressed.png", |
| "res/drawable-hdpi/btn_edit_pressed.png", |
| "res/drawable-tvdpi/btn_edit_pressed.png", |
| "res/drawable-xxhdpi/btn_edit_pressed.png", |
| "res/drawable-xhdpi/btn_edit_pressed.png", |
| "res/drawable-tvdpi-v19/btn_edit_pressed.png", |
| "res/drawable-hdpi-v19/btn_edit_pressed.png", |
| "res/drawable-xxhdpi-v11/btn_edit_pressed.png"); |
| |
| Path out = Files.createTempDirectory(this.toString()); |
| Path working = Files.createTempDirectory(this.toString()); |
| ImmutableList<String> densities = ImmutableList.of("xxhdpi"); |
| |
| DensitySpecificResourceFilter filter = |
| new DensitySpecificResourceFilter(densities, out, working); |
| |
| final Path filteredResourceDir = filter.filter(tmp); |
| final List<Path> filteredResources = new ArrayList<>(); |
| try { |
| Files.walkFileTree( |
| filteredResourceDir, |
| EnumSet.of(FileVisitOption.FOLLOW_LINKS), |
| Integer.MAX_VALUE, |
| new SimpleFileVisitor<Path>() { |
| @Override |
| public FileVisitResult visitFile(Path path, BasicFileAttributes attrs) |
| throws IOException { |
| filteredResources.add(filteredResourceDir.relativize(path)); |
| return FileVisitResult.CONTINUE; |
| } |
| }); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| |
| FileSystem fs = FileSystems.getDefault(); |
| assertThat(filteredResources) |
| .containsExactly( |
| fs.getPath("res/drawable-xxhdpi/btn_edit_pressed.png"), |
| fs.getPath("res/drawable-xxhdpi-v11/btn_edit_pressed.png"), |
| fs.getPath("res/drawable-xxhdpi-v19/btn_edit_pressed.png")); |
| } |
| |
| @Before |
| public void setUpEnvironment() throws Exception { |
| tmp = Files.createTempDirectory(this.toString()); |
| } |
| |
| private ImmutableList <Path> createFiles(String... pathStrings) throws IOException { |
| ImmutableList.Builder<Path> paths = ImmutableList.builder(); |
| for (String pathString : pathStrings) { |
| final Path path = tmp.resolve(pathString); |
| Files.createDirectories(path.getParent()); |
| Files.createFile(path); |
| paths.add(path); |
| } |
| return paths.build(); |
| } |
| |
| private void checkTransformedResources(List<String> resourcePaths, |
| List<String> expectedResourcePaths, List<String> densities) throws MergingException { |
| List<Path> resources = new ArrayList<>(); |
| FileSystem fs = FileSystems.getDefault(); |
| for (String resourcePath : resourcePaths) { |
| resources.add(fs.getPath(resourcePath)); |
| } |
| |
| DensitySpecificResourceFilter transformer = |
| new DensitySpecificResourceFilter(densities, null, null); |
| Set<Path> resourcesToRemove = new HashSet<>(transformer.getResourceToRemove(resources)); |
| List<String> actualResourcePaths = new ArrayList<>(); |
| |
| for (Path p : resources) { |
| if (!resourcesToRemove.contains(p)) { |
| actualResourcePaths.add(p.toString()); |
| } |
| } |
| |
| List<String> expected = Lists.transform(expectedResourcePaths, n -> fs.getPath(n).toString()); |
| assertThat(actualResourcePaths).containsExactlyElementsIn(expected); |
| } |
| } |
