diff options
Diffstat (limited to 'dependencies/pkg/mod/github.com/mattn/go-colorable@v0.1.13/colorable_test.go')
-rw-r--r-- | dependencies/pkg/mod/github.com/mattn/go-colorable@v0.1.13/colorable_test.go | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/dependencies/pkg/mod/github.com/mattn/go-colorable@v0.1.13/colorable_test.go b/dependencies/pkg/mod/github.com/mattn/go-colorable@v0.1.13/colorable_test.go new file mode 100644 index 0000000..b848a4f --- /dev/null +++ b/dependencies/pkg/mod/github.com/mattn/go-colorable@v0.1.13/colorable_test.go @@ -0,0 +1,98 @@ +package colorable + +import ( + "bytes" + "os" + "runtime" + "testing" +) + +// checkEncoding checks that colorable is output encoding agnostic as long as +// the encoding is a superset of ASCII. This implies that one byte not part of +// an ANSI sequence must give exactly one byte in output +func checkEncoding(t *testing.T, data []byte) { + // Send non-UTF8 data to colorable + b := bytes.NewBuffer(make([]byte, 0, 10)) + if b.Len() != 0 { + t.FailNow() + } + // TODO move colorable wrapping outside the test + NewNonColorable(b).Write(data) + if b.Len() != len(data) { + t.Fatalf("%d bytes expected, got %d", len(data), b.Len()) + } +} + +func TestEncoding(t *testing.T) { + checkEncoding(t, []byte{}) // Empty + checkEncoding(t, []byte(`abc`)) // "abc" + checkEncoding(t, []byte(`é`)) // "é" in UTF-8 + checkEncoding(t, []byte{233}) // 'é' in Latin-1 +} + +func TestNonColorable(t *testing.T) { + var buf bytes.Buffer + want := "hello" + NewNonColorable(&buf).Write([]byte("\x1b[0m" + want + "\x1b[2J")) + got := buf.String() + if got != "hello" { + t.Fatalf("want %q but %q", want, got) + } + + buf.Reset() + NewNonColorable(&buf).Write([]byte("\x1b[")) + got = buf.String() + if got != "" { + t.Fatalf("want %q but %q", "", got) + } +} + +func TestNonColorableNil(t *testing.T) { + paniced := false + func() { + defer func() { + recover() + paniced = true + }() + NewNonColorable(nil) + NewColorable(nil) + }() + + if !paniced { + t.Fatalf("should panic") + } +} + +func TestNonColorableESC(t *testing.T) { + var b bytes.Buffer + NewNonColorable(&b).Write([]byte{0x1b}) + if b.Len() > 0 { + t.Fatalf("0 bytes expected, got %d", b.Len()) + } +} + +func TestNonColorableBadESC(t *testing.T) { + var b bytes.Buffer + NewNonColorable(&b).Write([]byte{0x1b, 0x1b}) + if b.Len() > 0 { + t.Fatalf("0 bytes expected, got %d", b.Len()) + } +} + +func TestColorable(t *testing.T) { + if runtime.GOOS == "windows" { + t.Skipf("skip this test on windows") + } + _, ok := NewColorableStdout().(*os.File) + if !ok { + t.Fatalf("should os.Stdout on UNIX") + } + _, ok = NewColorableStderr().(*os.File) + if !ok { + t.Fatalf("should os.Stdout on UNIX") + } + _, ok = NewColorable(os.Stdout).(*os.File) + if !ok { + t.Fatalf("should os.Stdout on UNIX") + } +} |