assertThat(locations).isNotEmpty();
    for (ClassPath.LocationInfo location : locations) {
      ImmutableSet<ResourceInfo> resources = location.scanResources();
      assertThat(location.scanResources()).containsExactlyElementsIn(resources);
    }
  }

  public void testLocationsFrom_idempotentLocations() {
    ImmutableSet<ClassPath.LocationInfo> locations =