testutils

func CaptureStdoutAndStderr ¶

func CaptureStdoutAndStderr() func() (string, error)

CaptureStdoutAndStderr temporarily pipes os.Stdout and os.Stderr into a buffer. Imported from https://github.com/moul/u/blob/master/io.go.

func FilterStability ¶

func FilterStability(t *testing.T, mode StabilityMode)

func MutateByteSlice ¶

func MutateByteSlice(bytez []byte) []byte

Contract: !bytes.Equal(input, output) && len(input) >= len(output) TODO: keep output size the same; search all usage first.

func NewTestCaseDir ¶

func NewTestCaseDir(t *testing.T) (string, func())

NewTestCaseDir creates a new temporary directory for a test case. Returns the directory path and a cleanup function.

func NewTestFile ¶

func NewTestFile(t *testing.T) (*os.File, func())

NewTestFile creates a new temporary file for a test case