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Fix Dagger's incremental processing for KSP.
This change should be temporary until we can get a more robust fix in KSP (google/ksp#1555). Fixes #4063 Fixes #4054 RELNOTES=N/A PiperOrigin-RevId: 569608460
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144
...ests/artifacts/dagger/build-tests/src/test/java/buildtests/IncrementalProcessingTest.java
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/* | ||
* Copyright (C) 2023 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. | ||
*/ | ||
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package buildtests; | ||
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import static com.google.common.truth.Truth.assertThat; | ||
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import java.io.File; | ||
import java.io.IOException; | ||
import java.nio.file.Files; | ||
import java.nio.file.Path; | ||
import java.util.Set; | ||
import java.util.stream.Collectors; | ||
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; | ||
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// This is a regression test for https://github.com/google/dagger/issues/4054 | ||
@RunWith(JUnit4.class) | ||
public class IncrementalProcessingTest { | ||
@Rule public TemporaryFolder tmpFolder = new TemporaryFolder(); | ||
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@Test | ||
public void testIncrementalProcessing() throws IOException { | ||
File projectDir = tmpFolder.getRoot(); | ||
GradleModule.create(projectDir) | ||
.addSettingsFile("include 'app'") | ||
.addBuildFile( | ||
"buildscript {", | ||
" ext {", | ||
String.format("dagger_version = \"%s\"", System.getProperty("dagger_version")), | ||
String.format("kotlin_version = \"%s\"", System.getProperty("kotlin_version")), | ||
String.format("ksp_version = \"%s\"", System.getProperty("ksp_version")), | ||
" }", | ||
"}", | ||
"", | ||
"allprojects {", | ||
" repositories {", | ||
" mavenCentral()", | ||
" mavenLocal()", | ||
" }", | ||
"}"); | ||
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GradleModule appModule = | ||
GradleModule.create(projectDir, "app") | ||
.addBuildFile( | ||
"plugins {", | ||
" id 'application'", | ||
" id 'org.jetbrains.kotlin.jvm' version \"$kotlin_version\"", | ||
" id 'com.google.devtools.ksp' version \"$ksp_version\"", | ||
"}", | ||
"dependencies {", | ||
" implementation \"org.jetbrains.kotlin:kotlin-stdlib\"", | ||
" implementation \"com.google.dagger:dagger:$dagger_version\"", | ||
" ksp \"com.google.dagger:dagger-compiler:$dagger_version\"", | ||
"}") | ||
// Note: both A and AFactory need to be in the same source file for this to test the | ||
// regression in https://github.com/google/dagger/issues/4054. | ||
.addSrcFile( | ||
"A.kt", | ||
"package app", | ||
"", | ||
"import dagger.assisted.AssistedFactory", | ||
"import dagger.assisted.AssistedInject", | ||
"", | ||
"class A @AssistedInject constructor()", | ||
"", | ||
"@AssistedFactory", | ||
"interface AFactory {", | ||
" fun create(): A", | ||
"}"); | ||
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// We'll be changing the contents of MyComponent between builds, so store it in a variable. | ||
String myComponentContent = | ||
String.join( | ||
"\n", | ||
"package app", | ||
"", | ||
"import dagger.Component", | ||
"", | ||
"@Component", | ||
"interface MyComponent {", | ||
" fun factory(): AFactory", | ||
"}"); | ||
appModule.addSrcFile("MyComponent.kt", myComponentContent); | ||
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// Build #1 | ||
build(projectDir); | ||
assertThat(getAllKspGeneratedFileNames(appModule.getDir())) | ||
.containsExactly( | ||
"A_Factory.java", | ||
"AFactory_Impl.java", | ||
"DaggerMyComponent.java"); | ||
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// Change method name in MyComponent.kt to trigger incremental processing of only MyComponent. | ||
appModule.addSrcFile("MyComponent.kt", myComponentContent.replace("factory()", "factory2()")); | ||
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// Build #2 | ||
build(projectDir); | ||
assertThat(getAllKspGeneratedFileNames(appModule.getDir())) | ||
.containsExactly( | ||
"A_Factory.java", | ||
"AFactory_Impl.java", | ||
"DaggerMyComponent.java"); | ||
} | ||
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private static BuildResult build(File projectDir) { | ||
return GradleRunner.create() | ||
.withArguments("--stacktrace", "build") | ||
.withProjectDir(projectDir) | ||
.build(); | ||
} | ||
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private static Set<String> getAllKspGeneratedFileNames(Path moduleDir) throws IOException { | ||
return getAllFileNames(moduleDir.resolve("build/generated/ksp/main/java/")); | ||
} | ||
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private static Set<String> getAllFileNames(Path dir) throws IOException { | ||
if (!Files.isDirectory(dir)) { | ||
throw new IllegalArgumentException("Expected directory: " + dir); | ||
} | ||
return Files.walk(dir) | ||
.filter(Files::isRegularFile) | ||
.map(file -> file.getFileName().toString()) | ||
.collect(Collectors.toSet()); | ||
} | ||
} |
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