fp

func All ¶

func All(checks ...error) error

All reports every failed check, one per line. Use this by default. Arguments are evaluated before the call. Use Steps if a later check reads data that an earlier check proved valid.

func BytesEqual ¶

func BytesEqual(what string, got, want []byte) error

BytesEqual reports a length summary, not the payload. Test payloads are large and dumping them hides the failure.

func Each ¶

func Each[T any](label string, items []T, check func(T) error) error

Each runs check on each item. A failure gets the item index.

func Equal ¶

func Equal[T comparable](what string, got, want T) error

func ErrIs ¶

func ErrIs(what string, got, want error) error

func False ¶

func False(what string, cond bool) error

func Len ¶

func Len[T any](what string, got []T, want int) error

func NoErr ¶

func NoErr(what string, err error) error

func NotEqual ¶

func NotEqual[T comparable](what string, got, unwanted T) error

func Steps ¶

func Steps(checks ...func() error) error

Steps runs checks in order and stops at the first failure. Checks are deferred, so a failed step skips the steps after it.

func True ¶

func True(what string, cond bool) error

func WantErr ¶

func WantErr(what string, err error) error

WantErr fails when err is nil. Use for the error path of a test.