Add ECJ support

.github/workflows/build.yml

@@ -49,8 +49,7 @@ jobs:
         env:
           cache-name: maven-cache
         with:
-          path:
-            ~/.m2
+          path: ~/.m2
           key: build-${{ env.cache-name }}
 
       - name: Compile and run tests

java-compiler-testing/pom.xml

@@ -53,6 +53,11 @@
       <artifactId>assertj-core</artifactId>
     </dependency>
 
+    <dependency>
+      <groupId>org.eclipse.jdt</groupId>
+      <artifactId>ecj</artifactId>
+    </dependency>
+
     <dependency>
       <groupId>org.jspecify</groupId>
       <artifactId>jspecify</artifactId>

java-compiler-testing/src/it/avaje-http/src/test/java/io/github/ascopes/jct/acceptancetests/avajehttp/AvajeHttpTest.java

@@ -18,6 +18,7 @@
 import static io.github.ascopes.jct.assertions.JctAssertions.assertThatCompilation;
 
 import io.github.ascopes.jct.compilers.JctCompiler;
+import io.github.ascopes.jct.junit.EcjCompilerTest;
 import io.github.ascopes.jct.junit.JavacCompilerTest;
 import io.github.ascopes.jct.workspaces.Workspaces;
 import org.junit.jupiter.api.DisplayName;
@@ -26,6 +27,7 @@
 class AvajeHttpTest {
 
   @DisplayName("HTTP client code gets generated as expected")
+  @EcjCompilerTest(minVersion = 11)
   @JavacCompilerTest(minVersion = 11)
   void httpClientCodeGetsGeneratedAsExpected(JctCompiler compiler) {
     // Given
@@ -40,7 +42,7 @@ void httpClientCodeGetsGeneratedAsExpected(JctCompiler compiler) {
 
       // Then
       assertThatCompilation(compilation)
-          .isSuccessfulWithoutWarnings()
+          .isSuccessful()
           .classOutputPackages()
           .allFilesExist(
               "org/example/httpclient/GeneratedHttpComponent.class",

java-compiler-testing/src/it/avaje-inject/src/test/java/io/github/ascopes/jct/acceptancetests/avajeinject/AvajeInjectTest.java

@@ -18,6 +18,7 @@
 import static io.github.ascopes.jct.assertions.JctAssertions.assertThatCompilation;
 
 import io.github.ascopes.jct.compilers.JctCompiler;
+import io.github.ascopes.jct.junit.EcjCompilerTest;
 import io.github.ascopes.jct.junit.JavacCompilerTest;
 import io.github.ascopes.jct.workspaces.PathStrategy;
 import io.github.ascopes.jct.workspaces.Workspaces;
@@ -27,6 +28,7 @@
 class AvajeInjectTest {
 
   @DisplayName("Dependency injection code gets generated as expected")
+  @EcjCompilerTest(minVersion = 11)
   @JavacCompilerTest(minVersion = 11)
   void dependencyInjectionCodeGetsGeneratedAsExpected(JctCompiler compiler) {
     // Given
@@ -41,7 +43,7 @@ void dependencyInjectionCodeGetsGeneratedAsExpected(JctCompiler compiler) {
 
       // Then
       assertThatCompilation(compilation)
-          .isSuccessfulWithoutWarnings()
+          .isSuccessful()
           .classOutputPackages()
           .allFilesExist(
               "org/example/CoffeeMaker.class",

java-compiler-testing/src/it/avaje-jsonb/src/test/java/io/github/ascopes/jct/acceptancetests/avajejsonb/AvajeJsonbTest.java

@@ -21,6 +21,7 @@
 import io.avaje.jsonb.Jsonb;
 import io.avaje.jsonb.generator.Processor;
 import io.github.ascopes.jct.compilers.JctCompiler;
+import io.github.ascopes.jct.junit.EcjCompilerTest;
 import io.github.ascopes.jct.junit.JavacCompilerTest;
 import io.github.ascopes.jct.workspaces.Workspaces;
 import java.time.Instant;
@@ -30,6 +31,7 @@
 @DisplayName("Avaje Jsonb acceptance tests")
 class AvajeJsonbTest {
   @DisplayName("JSON handling logic is generated as expected")
+  @EcjCompilerTest(minVersion = 11)
   @JavacCompilerTest(minVersion = 11)
   void jsonHandlingLogicIsGeneratedAsExpected(JctCompiler compiler) throws Throwable {
     // Given
@@ -46,7 +48,7 @@ void jsonHandlingLogicIsGeneratedAsExpected(JctCompiler compiler) throws Throwab
 
       // Then
       assertThatCompilation(compilation)
-          .isSuccessfulWithoutWarnings();
+          .isSuccessful();
 
       var userClass = compilation
           .getClassOutputs()

java-compiler-testing/src/it/dagger/src/test/java/io/github/ascopes/jct/acceptancetests/dagger/DaggerTest.java

@@ -18,13 +18,15 @@
 import static io.github.ascopes.jct.assertions.JctAssertions.assertThatCompilation;
 
 import io.github.ascopes.jct.compilers.JctCompiler;
+import io.github.ascopes.jct.junit.EcjCompilerTest;
 import io.github.ascopes.jct.junit.JavacCompilerTest;
 import io.github.ascopes.jct.workspaces.Workspaces;
 import org.junit.jupiter.api.DisplayName;
 
 @DisplayName("Dagger acceptance tests")
 class DaggerTest {
   @DisplayName("Dagger DI runs as expected in the annotation processing phase")
+  @EcjCompilerTest
   @JavacCompilerTest
   void daggerDiRunsAsExpectedInTheAnnotationProcessingPhase(JctCompiler compiler) {
     try (var workspace = Workspaces.newWorkspace()) {
@@ -38,7 +40,7 @@ void daggerDiRunsAsExpectedInTheAnnotationProcessingPhase(JctCompiler compiler)
       var compilation = compiler.compile(workspace);
 
       // Then
-      assertThatCompilation(compilation).isSuccessfulWithoutWarnings();
+      assertThatCompilation(compilation).isSuccessful();
 
       assertThatCompilation(compilation)
           .sourceOutputPackages()

java-compiler-testing/src/it/dogfood/src/test/java/io/github/ascopes/jct/acceptancetests/dogfood/JctDogfoodTest.java

@@ -18,6 +18,7 @@
 import static io.github.ascopes.jct.assertions.JctAssertions.assertThat;
 
 import io.github.ascopes.jct.compilers.JctCompiler;
+import io.github.ascopes.jct.junit.EcjCompilerTest;
 import io.github.ascopes.jct.junit.JavacCompilerTest;
 import io.github.ascopes.jct.workspaces.Workspaces;
 import java.io.IOException;
@@ -52,6 +53,7 @@ class JctDogfoodTest {
       .resolve("classes");
 
   @DisplayName("JCT can compile itself as a legacy module source")
+  @EcjCompilerTest(minVersion = 17, configurers = JctCompilationConfigurer.class)
   @JavacCompilerTest(minVersion = 17, configurers = JctCompilationConfigurer.class)
   void jctCanCompileItselfAsLegacyModule(JctCompiler compiler) throws IOException {
     // Given

java-compiler-testing/src/it/google-auto-factory/src/test/java/io/github/ascopes/jct/acceptancetests/autofactory/AutoFactoryTest.java

@@ -19,6 +19,7 @@
 import static org.assertj.core.api.SoftAssertions.assertSoftly;
 
 import io.github.ascopes.jct.compilers.JctCompiler;
+import io.github.ascopes.jct.junit.EcjCompilerTest;
 import io.github.ascopes.jct.junit.JavacCompilerTest;
 import io.github.ascopes.jct.workspaces.Workspaces;
 import java.time.Instant;
@@ -28,6 +29,7 @@
 class AutoFactoryTest {
 
   @DisplayName("The AutoFactory class is created as expected")
+  @EcjCompilerTest
   @JavacCompilerTest
   void autoFactoryClassIsCreatedAsExpected(JctCompiler compiler) throws Throwable {
     try (var workspace = Workspaces.newWorkspace()) {
@@ -42,7 +44,7 @@ void autoFactoryClassIsCreatedAsExpected(JctCompiler compiler) throws Throwable
 
       // Then
       assertThatCompilation(compilation)
-          .isSuccessfulWithoutWarnings()
+          .isSuccessful()
           .classOutputPackages()
           .fileExists("org", "example", "UserFactory.class")
           .isNotEmptyFile();

java-compiler-testing/src/it/google-auto-service/src/test/java/io/github/ascopes/jct/acceptancetests/autoservice/AutoServiceTest.java

@@ -18,6 +18,7 @@
 import static io.github.ascopes.jct.assertions.JctAssertions.assertThatCompilation;
 
 import io.github.ascopes.jct.compilers.JctCompiler;
+import io.github.ascopes.jct.junit.EcjCompilerTest;
 import io.github.ascopes.jct.junit.JavacCompilerTest;
 import io.github.ascopes.jct.workspaces.Workspaces;
 import org.junit.jupiter.api.DisplayName;
@@ -26,6 +27,7 @@
 class AutoServiceTest {
 
   @DisplayName("The AutoService descriptor is created as expected")
+  @EcjCompilerTest
   @JavacCompilerTest
   void autoServiceDescriptorIsCreatedAsExpected(JctCompiler compiler) {
     try (var workspace = Workspaces.newWorkspace()) {
@@ -40,7 +42,7 @@ void autoServiceDescriptorIsCreatedAsExpected(JctCompiler compiler) {
 
       // Then
       assertThatCompilation(compilation)
-          .isSuccessfulWithoutWarnings()
+          .isSuccessful()
           .classOutputPackages()
           .fileExists("META-INF", "services", "org.example.SomeInterface")
           .hasContent("org.example.SomeImpl");

java-compiler-testing/src/it/google-auto-value/src/test/java/io/github/ascopes/jct/acceptancetests/autovalue/AutoValueTest.java

@@ -19,6 +19,7 @@
 import static org.assertj.core.api.SoftAssertions.assertSoftly;
 
 import io.github.ascopes.jct.compilers.JctCompiler;
+import io.github.ascopes.jct.junit.EcjCompilerTest;
 import io.github.ascopes.jct.junit.JavacCompilerTest;
 import io.github.ascopes.jct.workspaces.Workspaces;
 import java.time.Instant;
@@ -29,6 +30,7 @@
 class AutoValueTest {
 
   @DisplayName("The AutoValue implementation class is created as expected")
+  @EcjCompilerTest
   @JavacCompilerTest
   void autoValueImplementationClassIsCreatedAsExpected(JctCompiler compiler) throws Throwable {
     try (var workspace = Workspaces.newWorkspace()) {
@@ -43,7 +45,7 @@ void autoValueImplementationClassIsCreatedAsExpected(JctCompiler compiler) throw
 
       // Then
       assertThatCompilation(compilation)
-          .isSuccessfulWithoutWarnings()
+          .isSuccessful()
           .classOutputPackages()
           .allFilesExist(
               "org/example/AutoValue_User.class",

java-compiler-testing/src/it/immutables/src/test/java/io/github/ascopes/jct/acceptancetests/immutables/ImmutablesTest.java

@@ -19,6 +19,7 @@
 import static org.assertj.core.api.SoftAssertions.assertSoftly;
 
 import io.github.ascopes.jct.compilers.JctCompiler;
+import io.github.ascopes.jct.junit.EcjCompilerTest;
 import io.github.ascopes.jct.junit.JavacCompilerTest;
 import io.github.ascopes.jct.workspaces.Workspaces;
 import java.util.stream.Stream;
@@ -36,6 +37,7 @@
 class ImmutablesTest {
 
   @DisplayName("Immutables @Value produces the expected class")
+  @EcjCompilerTest
   @JavacCompilerTest
   void immutablesValueProducesTheExpectedClass(JctCompiler compiler) throws Throwable {
     try (var workspace = Workspaces.newWorkspace()) {
@@ -68,6 +70,7 @@ void immutablesValueProducesTheExpectedClass(JctCompiler compiler) throws Throwa
   }
 
   @DisplayName("Immutables @Value produces the expected class for modules")
+  @EcjCompilerTest(minVersion = 9)
   @JavacCompilerTest(minVersion = 9)
   void immutablesValueProducesTheExpectedClassForModules(JctCompiler compiler) throws Throwable {
     try (var workspace = Workspaces.newWorkspace()) {

java-compiler-testing/src/it/mapstruct/src/test/java/io/github/ascopes/jct/acceptancetests/mapstruct/MapStructTest.java

@@ -19,6 +19,7 @@
 import static org.assertj.core.api.SoftAssertions.assertSoftly;
 
 import io.github.ascopes.jct.compilers.JctCompiler;
+import io.github.ascopes.jct.junit.EcjCompilerTest;
 import io.github.ascopes.jct.junit.JavacCompilerTest;
 import io.github.ascopes.jct.workspaces.Workspaces;
 import java.util.stream.Stream;
@@ -28,6 +29,7 @@
 class MapStructTest {
 
   @DisplayName("MapStruct generates expected mapping code")
+  @EcjCompilerTest
   @JavacCompilerTest
   void mapStructGeneratesExpectedMappingCode(JctCompiler compiler) throws Throwable {
     try (final var workspace = Workspaces.newWorkspace()) {
@@ -40,7 +42,7 @@ void mapStructGeneratesExpectedMappingCode(JctCompiler compiler) throws Throwabl
       final var compilation = compiler.compile(workspace);
 
       // Then
-      assertThatCompilation(compilation).isSuccessfulWithoutWarnings();
+      assertThatCompilation(compilation).isSuccessful();
 
       final var classLoader = compilation.getFileManager()
           .getClassLoader(StandardLocation.CLASS_OUTPUT);
@@ -68,6 +70,7 @@ void mapStructGeneratesExpectedMappingCode(JctCompiler compiler) throws Throwabl
   }
 
   @DisplayName("MapStruct generates expected mapping code for modules")
+  @EcjCompilerTest(minVersion = 9)
   @JavacCompilerTest(minVersion = 9)
   void mapStructGeneratesExpectedMappingCodeForModules(JctCompiler compiler) throws Throwable {
     try (final var workspace = Workspaces.newWorkspace()) {
@@ -80,7 +83,7 @@ void mapStructGeneratesExpectedMappingCodeForModules(JctCompiler compiler) throw
       final var compilation = compiler.compile(workspace);
 
       // Then
-      assertThatCompilation(compilation).isSuccessfulWithoutWarnings();
+      assertThatCompilation(compilation).isSuccessful();
 
       final var classLoader = compilation.getFileManager()
           .getClassLoader(StandardLocation.CLASS_OUTPUT);

java-compiler-testing/src/it/micronaut/src/test/java/io/github/ascopes/jct/acceptancetests/micronaut/MicronautIntegrationTest.java

@@ -18,6 +18,7 @@
 import static io.github.ascopes.jct.assertions.JctAssertions.assertThatCompilation;
 
 import io.github.ascopes.jct.compilers.JctCompiler;
+import io.github.ascopes.jct.junit.EcjCompilerTest;
 import io.github.ascopes.jct.junit.JavacCompilerTest;
 import io.github.ascopes.jct.workspaces.Workspaces;
 import org.junit.jupiter.api.DisplayName;
@@ -26,6 +27,7 @@
 class MicronautIntegrationTest {
 
   @DisplayName("Micronaut generates the expected code")
+  @EcjCompilerTest(configurers = MicronautConfigurer.class)
   @JavacCompilerTest(configurers = MicronautConfigurer.class)
   void micronautGeneratesTheExpectedCode(JctCompiler compiler) {
     try (var workspace = Workspaces.newWorkspace()) {

java-compiler-testing/src/it/serviceloader-jpms/src/test/java/io/github/ascopes/jct/acceptancetests/serviceloaderjpms/testing/ServiceProcessorJpmsTest.java

@@ -19,6 +19,7 @@
 
 import io.github.ascopes.jct.acceptancetests.serviceloaderjpms.ServiceProcessor;
 import io.github.ascopes.jct.compilers.JctCompiler;
+import io.github.ascopes.jct.junit.EcjCompilerTest;
 import io.github.ascopes.jct.junit.JavacCompilerTest;
 import io.github.ascopes.jct.workspaces.Workspaces;
 import org.junit.jupiter.api.DisplayName;
@@ -27,6 +28,7 @@
 class ServiceProcessorJpmsTest {
 
   @DisplayName("Expected files get created when the processor is run")
+  @EcjCompilerTest(minVersion = 9)
   @JavacCompilerTest(minVersion = 9)
   void expectedFilesGetCreated(JctCompiler compiler) {
     try (var workspace = Workspaces.newWorkspace()) {
@@ -41,7 +43,7 @@ void expectedFilesGetCreated(JctCompiler compiler) {
           .compile(workspace);
 
       assertThatCompilation(compilation)
-          .isSuccessfulWithoutWarnings()
+          .isSuccessful()
           .classOutputPackages()
           .fileExists("META-INF", "services", "org.example.InsultProvider")
           .hasContent("org.example.MeanInsultProviderImpl");
@@ -62,7 +64,7 @@ void expectedFilesGetCreatedInMultiModuleRoots(JctCompiler compiler) {
           .compile(workspace);
 
       assertThatCompilation(compilation)
-          .isSuccessfulWithoutWarnings()
+          .isSuccessful()
           .classOutputModules().moduleExists("org.example")
           .fileExists("META-INF", "services", "org.example.InsultProvider")
           .hasContent("org.example.MeanInsultProviderImpl");

java-compiler-testing/src/it/serviceloader/src/test/java/io/github/ascopes/jct/acceptancetests/serviceloader/testing/ServiceProcessorTest.java

@@ -19,6 +19,7 @@
 
 import io.github.ascopes.jct.acceptancetests.serviceloader.ServiceProcessor;
 import io.github.ascopes.jct.compilers.JctCompiler;
+import io.github.ascopes.jct.junit.EcjCompilerTest;
 import io.github.ascopes.jct.junit.JavacCompilerTest;
 import io.github.ascopes.jct.workspaces.Workspaces;
 import org.junit.jupiter.api.DisplayName;
@@ -27,6 +28,7 @@
 class ServiceProcessorTest {
 
   @DisplayName("Expected files get created when the processor is run")
+  @EcjCompilerTest
   @JavacCompilerTest
   void expectedFilesGetCreated(JctCompiler compiler) {
     try (var workspace = Workspaces.newWorkspace()) {
@@ -41,7 +43,7 @@ void expectedFilesGetCreated(JctCompiler compiler) {
           .compile(workspace);
 
       assertThatCompilation(compilation)
-          .isSuccessfulWithoutWarnings()
+          .isSuccessful()
           .classOutputPackages()
           .fileExists("META-INF", "services", "org.example.InsultProvider")
           .hasContent("org.example.MeanInsultProviderImpl");