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assertFalse

Validates an expression to be of type boolean false. An optional failureMessage can be given for displaying should the validation fails.

assertFalse(expression)
# Or
assertFalse(expression, failureMessage)

Parameters#

  • expression: An expression that must evaluate to a boolean
  • failureMessage: An optional string message to show when validation fails

Returns#

  • No value

Example#

assertFalse(false && length([]) == 0 && containsKey({name: 'Bo'}, 'age'))
assertFalse(nonEmpty('Hello World'), 'Given string is not empty')