Date return date for testing.

ErrWriter returns an io.Writer that returns 0, err from all Write calls.

MaxAlloc checks that f does not allocate more than n.

Payloads returns a payload sizes list.

Rand returns a new rand.Rand with source deterministically initialized from seed byte slice.

RSAPrivateKey returns pre-generated test RSA private key.

RunPayloads runs given benchmark runner for every payload.

SetEnv sets environment variable and sets delete callback to unset variable after test.

SkipExternal skips current test if GOTD_TEST_EXTERNAL is not 1.

TestError returns error for testing error pass.

ZeroAlloc checks that f does not allocate.

Race reports if the race detector is enabled.

ZeroRand is zero random source.