groovy

Add ability to mock/stub constructors

Details

  • Type: Improvement Improvement
  • Status: Closed Closed
  • Priority: Minor Minor
  • Resolution: Fixed
  • Affects Version/s: 1.0
  • Fix Version/s: 1.7.1
  • Component/s: mocks and stubs
  • Labels:
    None
  • Environment:
    groovy 1.0, Java 1.5, Windows 2000
  • Number of attachments :
    1

Description

Would like the ability to stub/mock constructors.

Example:

def dateStub = new StubFor( Date )

dateStub.demand.Date

{ aControlCurrentTime }

Expectation is that .Date would be the default constructor of the Date class.

Activity

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Paul King added a comment -

I have a minor modification to MockFor/StubFor which supports this functionality. Here is an example of usage (mirroring this issue's suggestion):

import groovy.mock.interceptor.MockFor
class Person {
  String first, last
}
def interceptConstructorCalls = true
def mock = new MockFor(Person, interceptConstructorCalls)
def dummy = new Person(first:'Tom', last:'Jones')
mock.demand.with {
  Person() { dummy } // expect constructor call, return dummy
  getFirst() {'John'}
  getLast() {'Doe'}
}
mock.use {
  def p = new Person(first:'Mary', last:'Smith')
  assert p.first == 'John'
  assert p.last == 'Doe'
}

There is an optional parameter (defaulting to false) for the Constructor which indicates that mocking of the constructor is to be enabled. It is only possible to use with GroovyObjects.

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Paul King added a comment - I have a minor modification to MockFor/StubFor which supports this functionality. Here is an example of usage (mirroring this issue's suggestion): import groovy.mock.interceptor.MockFor class Person { String first, last } def interceptConstructorCalls = true def mock = new MockFor(Person, interceptConstructorCalls) def dummy = new Person(first:'Tom', last:'Jones') mock.demand.with { Person() { dummy } // expect constructor call, return dummy getFirst() {'John'} getLast() {'Doe'} } mock.use { def p = new Person(first:'Mary', last:'Smith') assert p.first == 'John' assert p.last == 'Doe' } There is an optional parameter (defaulting to false) for the Constructor which indicates that mocking of the constructor is to be enabled. It is only possible to use with GroovyObjects.
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Paul King added a comment -

Proposed patch - planning to apply to trunk once I have written some tests.

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Paul King added a comment - Proposed patch - planning to apply to trunk once I have written some tests.
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Paul King added a comment -

Fixed in trunk.

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Paul King added a comment - Fixed in trunk.

People

  • Assignee:
    Paul King
    Reporter:
    David Weiler-Thiessen
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Dates

  • Created:
    Updated:
    Resolved: