t.Fatalf("Unexpected output for 'istioctl %s'\n got: %q\nwant: %q", strings.Join(c.args, " "), output, c.expectedOutput)
	}

	if c.expectedString != "" && !strings.Contains(output, c.expectedString) {
		t.Fatalf("Output didn't match for '%s %s'\n got %v\nwant: %v", cmd.Name(), strings.Join(c.args, " "), output, c.expectedString)
	}

	if c.wantException {
		if fErr == nil {

	t.Helper()

	if c.expectedString != "" && !strings.Contains(output, c.expectedString) {
		t.Fatalf("Output didn't match for 'istioctl %s'\n got %v\nwant: %v", c.args, output, c.expectedString)
	}

	if c.notExpected != "" && strings.Contains(output, c.notExpected) {
		t.Fatalf("Output didn't match for 'istioctl %s'\n got %v\nDON'T want: %v", c.args, output, c.expectedString)
	}

	if c.shouldFail {

			expectedString: "foo",
		},
		{
			taint: &Taint{
				Key:   "foo",
				Value: "bar",
			},
			expectedString: "foo=bar:",
		},
	}

	for i, tc := range testCases {
		if tc.expectedString != tc.taint.ToString() {
			t.Errorf("[%v] expected taint %v converted to %s, got %s", i, tc.taint, tc.expectedString, tc.taint.ToString())
		}
	}
}

func TestMatchTaint(t *testing.T) {
	testCases := []struct {

		t.Fatalf("Unexpected output for 'istioctl %s'\n got: %q\nwant: %q", strings.Join(c.args, " "), output, c.expectedOutput)
	}

	if c.expectedString != "" && !strings.Contains(output, c.expectedString) {
		t.Fatalf("Output didn't match for '%s %s'\n got %v\nwant: %v", cmd.Name(), strings.Join(c.args, " "), output, c.expectedString)
	}

	if c.wantException {
		if fErr == nil {

			expectedString: "foo",
		},
		{
			taint: &Taint{
				Key:   "foo",
				Value: "bar",
			},
			expectedString: "foo=bar:",
		},
	}

	for i, tc := range testCases {
		if tc.expectedString != tc.taint.ToString() {
			t.Errorf("[%v] expected taint %v converted to %s, got %s", i, tc.taint, tc.expectedString, tc.taint.ToString())
		}
	}
}

func TestMatchTaint(t *testing.T) {
	testCases := []struct {

		t.Fatalf("Unexpected output for 'istioctl %s'\n got: %q\nwant: %q", strings.Join(c.args, " "), output, c.expectedOutput)
	}

	if c.expectedString != "" && !strings.Contains(output, c.expectedString) {
		t.Fatalf("Output didn't match for '%s %s'\n got %v\nwant: %v", cmd.Name(), strings.Join(c.args, " "), output, c.expectedString)
	}

	if c.wantException {
		if fErr == nil {

		t.Fatalf("Unexpected output for 'istioctl %s'\n got: %q\nwant: %q", strings.Join(c.args, " "), output, c.expectedOutput)
	}

	if c.expectedString != "" && !strings.Contains(output, c.expectedString) {
		t.Fatalf("Output didn't match for '%s %s'\n got %v\nwant: %v", cmd.Name(), strings.Join(c.args, " "), output, c.expectedString)
	}

	if c.wantException {
		if fErr == nil {

        // but in this case it will just return the string representation of the value
        String actualString = getFilePathOrString(actual);
        String expectedString = getFilePathOrString(expected);

        return TestFailure.fromTestAssertionFailure(throwable, expectedString, actualString);
    }

    private static boolean isFileInfo(@Nullable  Object value) {

    String testString = "abcdefgh";
    CharSource source = newCharSource(testString);
    Reader joinedReader = CharSource.concat(source, source).openStream();

    String expectedString = testString + testString;
    assertEquals(expectedString, CharStreams.toString(joinedReader));
  }

  private static CharSource newCharSource(final String text) {
    return new CharSource() {
      @Override
      public Reader openStream() {

		t.Fatalf("Unexpected output for 'istioctl %s'\n got: %q\nwant: %q", strings.Join(c.args, " "), output, c.expectedOutput)
	}

	if c.expectedString != "" && !strings.Contains(output, c.expectedString) {
		t.Fatalf("Output didn't match for 'istioctl %s'\n got %v\nwant: %v", strings.Join(c.args, " "), output, c.expectedString)
	}

	if c.wantException {
		if fErr == nil {