t.Errorf("expected a failure containing the substring: %q", testCase.expectedErrorSubstring)
				}
			case 1:
				if testCase.expectedErrorSubstring == "" {
					t.Errorf("didn't expect a failure, got: %q", errs[0].Error())
				} else if !strings.Contains(errs[0].Error(), testCase.expectedErrorSubstring) {

        and transcode a variety of input text encoding formats into the main
        Unicode encodings (UTF-8, UTF-16-BE, UTF-32-BE)
    *   Add "unit" attribute to the substr op, which allows obtaining the
        substring of a string containing unicode characters.
    *   Broadcasting support for Ragged Tensors.
    *   `SpaceToDepth` supports uint8 data type.
    *   Support multi-label quantile regression in estimator.