Function TestErrorIs

assert/assertions_test.go:3697–3764

(t *testing.T)

}

func TestErrorIs(t *testing.T) {
	t.Parallel()

	tests := []struct {
		err          error
		target       error
		result       bool
		resultErrMsg string
	}{
		{
			err:    io.EOF,
			target: io.EOF,
			result: true,
		},
		{
			err:    fmt.Errorf("wrap: %w", io.EOF),
			target: io.EOF,
			result: true,
		},
		{
			err:    io.EOF,
			target: io.ErrClosedPipe,
			result: false,
			resultErrMsg: "" +
				"Target error should be in err chain:\n" +
				"expected: \"io: read/write on closed pipe\"\n" +
				"in chain: \"EOF\"\n",
		},
		{
			err:          nil,
			target:       io.EOF,
			result:       false,
			resultErrMsg: "Expected error with \"EOF\" in chain but got nil.\n",
		},
		{
			err:    io.EOF,
			target: nil,
			result: false,
			resultErrMsg: "" +
				"Target error should be in err chain:\n" +
				"expected: \"\"\n" +
				"in chain: \"EOF\"\n",
		},
		{
			err:    nil,
			target: nil,
			result: true,
		},
		{
			err:    fmt.Errorf("abc: %w", errors.New("def")),
			target: io.EOF,
			result: false,
			resultErrMsg: "" +
				"Target error should be in err chain:\n" +
				"expected: \"EOF\"\n" +
				"in chain: \"abc: def\"\n" +
				"\t\"def\"\n",
		},