# Class: Failure

## vertx-unit-js/failure~ Failure

#### new Failure()

  A failure provides the details of a failure that happened during the execution of a test case.

  The failure can be:
  - an assertion failure: an assertion failed
  - an error failure: an expected error occured
  Source:
    - failure.js, line 36

### Methods

#### isError() → {boolean}

  Source:
    - failure.js, line 48

  ##### Returns:

  - true if the failure is an error failure otherwise it is an assertion failure
  - Type
      boolean

#### message() → {string}

  Source:
    - failure.js, line 65

  ##### Returns:

  - the error message
  - Type
      string

#### stackTrace() → {string}

  Source:
    - failure.js, line 82

  ##### Returns:

  - the stack trace
  - Type
      string