import org.gradle.api.GradleException;

import javax.annotation.Nullable;

class GeneratedClassCompilationException extends GradleException {
    public GeneratedClassCompilationException(String message) {
        super(message);
    }

    public GeneratedClassCompilationException(String message, @Nullable Throwable cause) {
        super(message, cause);
    }

     */
    public static void compile(File srcDir, File dstDir, List<ClassSource> classes, ClassPath classPath) throws GeneratedClassCompilationException {
        JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
        if (compiler == null) {
            throw new GeneratedClassCompilationException("No Java compiler found, please ensure you are running Gradle with a JDK");
        }

        then:
        assertCompiled 'A', 'B'
    }

    def "reports compilation errors"() {
        when:
        compile(source('A', 'public class Broken'))

        then:
        GeneratedClassCompilationException ex = thrown()
        normaliseLineSeparators(ex.message) == """Unable to compile generated sources:
  - File A.java, line: 2, reached end of file while parsing"""
    }