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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: 568629041
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...ests/artifacts/dagger/build-tests/src/test/java/buildtests/IncrementalProcessingTest.java
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| @@ -0,0 +1,144 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
|
||
| package buildtests; | ||
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|
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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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