assertTrue

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

assertTrue(expression)
# Or
assertTrue(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

assertTrue(!false && length([1]) > 0 && containsKey({name: 'Bo'}, 'name'))
assertTrue(nonEmpty('  '), 'Given string is empty')