Add "generatesSourcesExactly" method?

[edenman]

Currently if you call GeneratedPredicateClause.generatesSources(foo) but the code generates two files instead of just foo, this test will pass. If I were to add a generateSourcesExactly that requires all generated files be specified, would that be accepted?

[0x3333]

I'm looking for this same thing, or at least know if a file has _not_ been generated.

[blipinsk]

A little workaround to achieve that (example using google/truth):

Compilation compilation = /* prepare your Compilation object */;

final ImmutableList<JavaFileObject> generatedSourceFiles = compilation.generatedSourceFiles();
final ImmutableList.Builder<String> builder = ImmutableList.builder();
for (JavaFileObject generatedSourceFile : generatedSourceFiles) {
    final String qualifiedName = generatedSourceFile.getName()
            .substring(StandardLocation.SOURCE_OUTPUT.getName().length() + 2)
            .replace(JavaFileObject.Kind.SOURCE.extension, "")
            .replace("/", ".");
    builder.add(qualifiedName);
}
final ImmutableList<String> generatedQualifiedNames = builder.build();

// Checking if expected files have been generated
Truth.assertThat(generatedQualifiedNames)
        .containsExactly("com.example.FileOne", "com.example.FileTwo", "com.example.FileThree");

// Checking if a specific file hasn't been generated
Truth.assertThat(generatedQualifiedNames)
        .doesNotContain("com.example.FileThatShouldntBeGenerated");

Alternatively you could dump all the logic (of extracting a qualified name data from JavaFileObject name) into a Correspondence object, and use:

Truth.assertThat(generatedQualifiedNames)
        .comparingElementsUsing(SOURCE_FILE_CORRESPONDS_TO_QUALIFIED_NAME)
        .doesNotContain("com.example.FileThatShouldntBeGenerated");

But you're loosing some of the Truth flexibility. E.g. you'd have to call containsExactlyElementsIn instead of containsExactly.

[manan1979]

hi @edenman how can i solve this issue?