notOk

Assert: notOk(value, message)

Tests if value is falsy. It is equivalent to assert.equal(!!value, false, message).

If value is truthy, an AssertionError is thrown with a message property set equal to the value of the message parameter. If the message parameter is undefined, a default error message is assigned. If the message parameter is an instance of an Error then it will be thrown as the error.

Parameters