# Functions
BeEmptyMapf panics if m is not an empty map.
BeEqualf panics if a != b.
Bef panics if b is false.
Failf unconditionally panics with the given message.
NotBeBlankf panics if s is empty or contains only whitespace.
NotBeEmptyf panics if es is an empty slice.
NotBeEqualf panics if a == b.
NotBef panics if b is true.
NotBeNilf panics if v is nil.
NotContainf panics if e is in es.