Add a Gradle project to run functional tests

Only packages with Java sources are added for now.

RELNOTES=N/A
PiperOrigin-RevId: 720564371

buildSrc/src/main/kotlin/dagger/gradle/build/JarDependencies.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2025 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 dagger.gradle.build
+
+import org.gradle.api.Project
+import org.gradle.api.file.RegularFile
+
+fun Project.findBootstrapCompilerJar(): RegularFile =
+  rootProject.layout.projectDirectory
+    .dir("java/dagger/internal/codegen/bootstrap")
+    .file("bootstrap_compiler_deploy.jar")
+
+fun Project.findXProcessingJar(): RegularFile =
+  rootProject.layout.projectDirectory
+    .dir("java/dagger/internal/codegen/xprocessing")
+    .file("xprocessing.jar")

gradle-projects/dagger-compiler-functional-tests/build.gradle.kts

@@ -0,0 +1,82 @@
+import dagger.gradle.build.daggerSources
+import dagger.gradle.build.findXProcessingJar
+
+plugins { alias(libs.plugins.dagger.kotlinJvm) }
+
+daggerSources {
+  // TODO(danysantiago): Add packages that test Kotlin sources
+  test.setPackages(
+    listOf(
+      "javatests/dagger/functional/assisted",
+      "javatests/dagger/functional/assisted/subpackage",
+      "javatests/dagger/functional/basic",
+      "javatests/dagger/functional/basic/subpackage",
+      "javatests/dagger/functional/binds",
+      "javatests/dagger/functional/binds/subpackage",
+      "javatests/dagger/functional/builder",
+      "javatests/dagger/functional/builderbinds",
+      "javatests/dagger/functional/componentdependency",
+      "javatests/dagger/functional/componentdependency/subpackage",
+      "javatests/dagger/functional/cycle",
+      "javatests/dagger/functional/factory",
+      "javatests/dagger/functional/generated",
+      "javatests/dagger/functional/generictypes",
+      "javatests/dagger/functional/generictypes/subpackage",
+      "javatests/dagger/functional/guava",
+      "javatests/dagger/functional/guava/a",
+      "javatests/dagger/functional/jakarta",
+      "javatests/dagger/functional/jdk8",
+      "javatests/dagger/functional/jdk8/a",
+      "javatests/dagger/functional/membersinject",
+      "javatests/dagger/functional/membersinject/subpackage",
+      "javatests/dagger/functional/membersinject/subpackage/a",
+      "javatests/dagger/functional/membersinject/subpackage/b",
+      "javatests/dagger/functional/modules",
+      "javatests/dagger/functional/modules/subpackage",
+      "javatests/dagger/functional/multibindings",
+      "javatests/dagger/functional/multibindings/subpackage",
+      "javatests/dagger/functional/multipackage",
+      "javatests/dagger/functional/multipackage/a",
+      "javatests/dagger/functional/multipackage/b",
+      "javatests/dagger/functional/multipackage/c",
+      "javatests/dagger/functional/multipackage/d",
+      "javatests/dagger/functional/multipackage/foo",
+      "javatests/dagger/functional/multipackage/grandsub",
+      "javatests/dagger/functional/multipackage/moduleconstructor",
+      "javatests/dagger/functional/multipackage/primitives",
+      "javatests/dagger/functional/multipackage/sub",
+      "javatests/dagger/functional/names",
+      "javatests/dagger/functional/nullables",
+      "javatests/dagger/functional/rawtypes",
+      "javatests/dagger/functional/reusable",
+      "javatests/dagger/functional/scope",
+      "javatests/dagger/functional/staticproviders",
+      "javatests/dagger/functional/subcomponent",
+      "javatests/dagger/functional/subcomponent/hiding",
+      "javatests/dagger/functional/subcomponent/hiding/a",
+      "javatests/dagger/functional/subcomponent/hiding/b",
+      "javatests/dagger/functional/subcomponent/module",
+      "javatests/dagger/functional/subcomponent/multibindings",
+      "javatests/dagger/functional/subcomponent/pruning",
+      "javatests/dagger/functional/subcomponent/repeat",
+    )
+  )
+}
+
+dependencies {
+  testImplementation(project(":dagger"))
+  testAnnotationProcessor(project(":dagger-compiler"))
+  testAnnotationProcessor(project(":dagger-spi"))
+  // Functional tests rely on the non-shaded version of the compiler, so we need to bring
+  // those compile only dependencies.
+  testAnnotationProcessor(libs.auto.common)
+  testAnnotationProcessor(files(project.findXProcessingJar()))
+
+  testImplementation(libs.junit)
+  testImplementation(libs.truth)
+  testImplementation(libs.auto.factory.annotations)
+  testAnnotationProcessor(libs.auto.factory.compiler)
+  testImplementation(libs.auto.value.annotations)
+  testAnnotationProcessor(libs.auto.value.compiler)
+  testImplementation(libs.kotlin.stdlib)
+}

gradle-projects/dagger-compiler/build.gradle.kts

@@ -1,4 +1,6 @@
 import dagger.gradle.build.daggerSources
+import dagger.gradle.build.findBootstrapCompilerJar
+import dagger.gradle.build.findXProcessingJar
 
 plugins {
   alias(libs.plugins.dagger.kotlinJvm)
@@ -49,23 +51,11 @@ dependencies {
   implementation(libs.kotlinPoet)
   implementation(libs.ksp.api)
 
-  annotationProcessor(
-    files(
-      project.rootProject.layout.projectDirectory
-        .dir("java/dagger/internal/codegen/bootstrap")
-        .file("bootstrap_compiler_deploy.jar")
-    )
-  )
+  annotationProcessor(files(project.findBootstrapCompilerJar()))
 
   // These dependencies are shaded into dagger-spi
   compileOnly(libs.auto.common)
-  compileOnly(
-    files(
-      project.rootProject.layout.projectDirectory
-        .dir("java/dagger/internal/codegen/xprocessing")
-        .file("xprocessing.jar")
-    )
-  )
+  compileOnly(files(project.findXProcessingJar()))
 }
 
 shading {

gradle/libs.versions.toml

@@ -1,6 +1,7 @@
 [versions]
-autoValue = "1.9"
+autoFactory = "1.0"
 autoService = "1.0"
+autoValue = "1.9"
 guava = "33.0.0-jre"
 gradleIncap = "0.2"
 jdk = "18"
@@ -15,10 +16,12 @@ truth = "1.4.0"
 
 [libraries]
 auto-common = { module = "com.google.auto:auto-common", version = "1.2.1" }
-auto-value-annotations = { module = "com.google.auto.value:auto-value-annotations", version.ref = "autoValue" }
-auto-value-compiler = { module = "com.google.auto.value:auto-value", version.ref = "autoValue" }
+auto-factory-annotations = { module = "com.google.auto.factory:auto-factory", version.ref = "autoFactory" }
+auto-factory-compiler = { module = "com.google.auto.factory:auto-factory", version.ref = "autoFactory" }
 auto-service-annotations = { module = "com.google.auto.service:auto-service-annotations", version.ref = "autoService" }
 auto-service-compiler = { module = "com.google.auto.service:auto-service", version.ref = "autoService" }
+auto-value-annotations = { module = "com.google.auto.value:auto-value-annotations", version.ref = "autoValue" }
+auto-value-compiler = { module = "com.google.auto.value:auto-value", version.ref = "autoValue" }
 checkerFramework = { module = "org.checkerframework:checker-compat-qual", version = "2.5.3" }
 findBugs = { module = "com.google.code.findbugs:jsr305", version = "3.0.1" }
 javaFormatter = { module = "com.google.googlejavaformat:google-java-format", version = "1.5" }

settings.gradle.kts

@@ -1,25 +1,33 @@
 pluginManagement {
-    repositories {
-        google()
-        mavenCentral()
-        gradlePluginPortal()
-    }
+  repositories {
+    google()
+    mavenCentral()
+    gradlePluginPortal()
+  }
 }
+
 dependencyResolutionManagement {
-    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
-    repositories {
-        google()
-        mavenCentral()
-    }
+  repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+  repositories {
+    google()
+    mavenCentral()
+  }
 }
 
 rootProject.name = "dagger-parent"
 
 fun includeProject(name: String, path: String) {
-    include(name)
-    project(name).projectDir = File(path)
+  include(name)
+  project(name).projectDir = File(path)
 }
 
 includeProject(":dagger", "gradle-projects/dagger-runtime")
+
 includeProject(":dagger-spi", "gradle-projects/dagger-spi")
+
 includeProject(":dagger-compiler", "gradle-projects/dagger-compiler")
+
+includeProject(
+  ":dagger-compiler-functional-tests",
+  "gradle-projects/dagger-compiler-functional-tests",
+)