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IsolatingIncrementalAnnotationProcessingIntegrationTest.groovy
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IsolatingIncrementalAnnotationProcessingIntegrationTest.groovy
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/*
* Copyright 2018 the original author or 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 org.gradle.api.tasks.compile
import org.gradle.api.JavaVersion
import org.gradle.api.internal.tasks.compile.processing.IncrementalAnnotationProcessorType
import org.gradle.integtests.fixtures.AvailableJavaHomes
import org.gradle.language.fixtures.AnnotationProcessorFixture
import org.gradle.language.fixtures.HelperProcessorFixture
import org.gradle.language.fixtures.NonIncrementalProcessorFixture
import org.gradle.language.fixtures.ServiceRegistryProcessorFixture
import org.gradle.util.TextUtil
class IsolatingIncrementalAnnotationProcessingIntegrationTest extends AbstractIncrementalAnnotationProcessingIntegrationTest {
private HelperProcessorFixture helperProcessor
@Override
def setup() {
helperProcessor = new HelperProcessorFixture()
withProcessor(helperProcessor)
}
def "generated files are recompiled when annotated file changes"() {
given:
def a = java "@Helper class A {}"
java "class Unrelated {}"
outputs.snapshot { run "compileJava" }
when:
a.text = "@Helper class A { public void foo() {} }"
run "compileJava"
then:
outputs.recompiledClasses("A", "AHelper")
}
def "annotated files are not recompiled on unrelated changes"() {
given:
java "@Helper class A {}"
def unrelated = java "class Unrelated {}"
outputs.snapshot { run "compileJava" }
when:
unrelated.text = "class Unrelated { public void foo() {} }"
run "compileJava"
then:
outputs.recompiledClasses("Unrelated")
}
def "classes depending on generated file are recompiled when source file changes"() {
given:
def a = java "@Helper class A {}"
java """class Dependent {
private AHelper helper = new AHelper();
}"""
outputs.snapshot { run "compileJava" }
when:
a.text = "@Helper class A { public void foo() {} }"
run "compileJava"
then:
outputs.recompiledClasses("A", "AHelper", "Dependent")
}
def "source file is recompiled when dependency of generated file changes"() {
given:
withProcessor(new OpaqueDependencyProcessor())
java "@Thingy class A {}"
def dependency = java "class Dependency {}"
outputs.snapshot { run "compileJava" }
when:
dependency.text = "class Dependency { public void foo() {} }"
run "compileJava"
then:
outputs.recompiledClasses("A", "AThingy", "Dependency")
}
def "classes files of generated sources are deleted when annotated file is deleted"() {
given:
def a = java "@Helper class A {}"
java "class Unrelated {}"
outputs.snapshot { run "compileJava" }
when:
a.delete()
run "compileJava"
then:
outputs.deletedClasses("A", "AHelper")
}
def "generated files are deleted when annotated file is deleted"() {
given:
def a = java "@Helper class A {}"
java "class Unrelated {}"
when:
outputs.snapshot { run "compileJava" }
then:
file("build/classes/java/main/AHelper.java").exists()
when:
a.delete()
run "compileJava"
then:
!file("build/classes/java/main/AHelper.java").exists()
}
def "generated files and classes are deleted when processor is removed"() {
given:
def a = java "@Helper class A {}"
when:
outputs.snapshot { run "compileJava" }
then:
file("build/classes/java/main/AHelper.java").exists()
when:
buildFile << "compileJava.options.annotationProcessorPath = files()"
run "compileJava"
then:
!file("build/classes/java/main/AHelper.java").exists()
and:
outputs.deletedClasses("AHelper")
}
def "all files are recompiled when processor changes"() {
given:
def a = java "@Helper class A {}"
outputs.snapshot { run "compileJava" }
when:
helperProcessor.suffix = "world"
withProcessor(helperProcessor)
run "compileJava"
then:
outputs.recompiledClasses("A", "AHelper")
}
def "all files are recompiled if compiler does not support incremental annotation processing"() {
given:
buildFile << """
compileJava {
options.fork = true
options.forkOptions.executable = '${TextUtil.escapeString(AvailableJavaHomes.getJdk(JavaVersion.current()).javacExecutable)}'
}
"""
def a = java "@Helper class A {}"
java "class Unrelated {}"
outputs.snapshot { run "compileJava" }
when:
a.text = "@Helper class A { public void foo() {} }"
run "compileJava", "--info"
then:
outputs.recompiledClasses("A", "AHelper", "Unrelated")
and:
outputContains("the chosen compiler did not support incremental annotation processing")
}
def "all files are recompiled if a generated source file is deleted"() {
given:
java "@Helper class A {}"
java "class Unrelated {}"
outputs.snapshot { run "compileJava" }
when:
file("build/classes/java/main/AHelper.java").delete()
run "compileJava"
then:
outputs.recompiledClasses('A', "AHelper", "Unrelated")
}
def "all files are recompiled if a generated class is deleted"() {
given:
java "@Helper class A {}"
java "class Unrelated {}"
outputs.snapshot { run "compileJava" }
when:
file("build/classes/java/main/AHelper.class").delete()
run "compileJava"
then:
outputs.recompiledClasses('A', "AHelper", "Unrelated")
}
def "processors must provide an originating element for each source element"() {
given:
withProcessor(new NonIncrementalProcessorFixture().providingNoOriginatingElements().withDeclaredType(IncrementalAnnotationProcessorType.ISOLATING))
def a = java "@Thing class A {}"
outputs.snapshot { succeeds "compileJava" }
when:
a.text = "@Thing class A { void foo() {} }"
then:
succeeds "compileJava", "--info"
and:
outputContains("Full recompilation is required because the generated type 'AThing' must have exactly one originating element, but had 0.")
}
def "writing resources triggers a full recompilation"() {
given:
withProcessor(new NonIncrementalProcessorFixture().writingResources().withDeclaredType(IncrementalAnnotationProcessorType.ISOLATING))
def a = java "@Thing class A {}"
outputs.snapshot { succeeds "compileJava" }
when:
a.text = "@Thing class A { void foo() {} }"
then:
succeeds "compileJava", "--info"
and:
outputContains("Full recompilation is required because an annotation processor generated a resource.")
}
def "processors cannot provide multiple originating elements"() {
given:
withProcessor(new ServiceRegistryProcessorFixture().withDeclaredType(IncrementalAnnotationProcessorType.ISOLATING))
def a = java "@Service class A {}"
java "@Service class B {}"
outputs.snapshot { succeeds "compileJava" }
when:
a.text = "@Service class A { void foo() {} }"
then:
succeeds "compileJava", "--info"
and:
outputContains("Full recompilation is required because the generated type 'ServiceRegistry' must have exactly one originating element, but had 2.")
}
/**
* An annotation processor whose generated code depends on some library class that the annotated
* file does not depend on. A real-world example would be a processor that generated database
* access classes and depends on the concrete database driver, which might change.
*/
private static class OpaqueDependencyProcessor extends AnnotationProcessorFixture {
OpaqueDependencyProcessor() {
super("Thingy")
}
@Override
protected String getGeneratorCode() {
"""
for (Element element : elements) {
TypeElement typeElement = (TypeElement) element;
String className = typeElement.getSimpleName().toString() + "Thingy";
try {
JavaFileObject sourceFile = filer.createSourceFile(className, element);
Writer writer = sourceFile.openWriter();
try {
writer.write("class " + className + " {");
writer.write(" Dependency getValue() { return new Dependency();}");
writer.write("}");
} finally {
writer.close();
}
} catch (IOException e) {
messager.printMessage(Diagnostic.Kind.ERROR, "Failed to generate source file " + className, element);
}
}
"""
}
}
}