[#GROOVY-1823] Add ability to mock/stub constructors - jira.codehaus.org

Details

Type: Improvement
Status: Closed
Priority: 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.

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Attachments

GROOVY-1823__Add_ability_to_mock_stub_constructors.patch

03/Feb/10 5:14 AM

5 kB

Paul King

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Paul King added a comment - 03/Feb/10 5:10 AM

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 - 03/Feb/10 5:10 AM 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 - 03/Feb/10 5:14 AM

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

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Paul King added a comment - 03/Feb/10 5:14 AM Proposed patch - planning to apply to trunk once I have written some tests.

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Paul King added a comment - 07/Feb/10 7:02 AM

Fixed in trunk.

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Paul King added a comment - 07/Feb/10 7:02 AM Fixed in trunk.

People

Assignee:

Paul King

Reporter:

David Weiler-Thiessen

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Dates

Created:

09/Apr/07 9:56 AM

Updated:

07/Apr/10 11:46 PM

Resolved:

07/Feb/10 7:02 AM