NAME
Test::MonkeyMock - Usable mock class
SYNOPSIS
# Create a new mock object
my $mock = Test::MonkeyMock->new;
$mock->mock(foo => sub { 'bar' });
$mock->foo;
# Mock method when number of arguments is even
$mock->mock(foo => sub { }, when => sub { @_ == 2 });
# Mock method when it's called only the first time
$mock->mock(foo => sub { }, frame => 0);
# Mock existing object
my $mock = Test::MonkeyMock->new(MyObject->new());
$mock->mock(foo => sub { 'bar' });
$mock->foo;
# Check how many times the method was called
my $count = $mock->mocked_called('foo');
# Check what arguments were passed on the first call
my @args = $mock->mocked_call_args('foo');
# Check what arguments were passed on the second call
my @args = $mock->mocked_call_args('foo', 1);
# Get all the stack
my $call_stack = $mock->mocked_call_stack('foo');
DESCRIPTION
Why? I used and still use Test::MockObject and Test::MockObject::Extends a lot but sometimes it behaves very strangely introducing hard to find global bugs in the test code, which is very painful, since the test suite should have as least bugs as possible. Test::MonkeyMock is somewhat a subset of Test::MockObject but without side effects.
Test::MonkeyMock is also very strict. When mocking a new object:
throw when using
mocked_called
on unmocked methodthrow when using
mocked_call_args
on unmocked method
When mocking an existing object:
throw when using
mock
on unknown methodthrow when using
mocked_called
on unknown methodthrow when using
mocked_call_args
on unknown method
METHODS
new
Creates new mock or extends an existing object.
Test::MonkeyMock->new;
Test::MonkeyMock->new($object);
can($method)
Returns what a real can
does.
mock($method, $code, %options)
Mocks method with a subroutine.
Options are conditions that are checked when dispatching a method. If the condition fails the next candidate is taken.
when
When is called with original @_
. Thus you can check for specific parameteres.
my $mock = Test::MonkeyMock->new();
$mock->mock(foo => sub { 'bar' }, when => sub { @_ == 2 });
$mock->mock(foo => sub { 'else' });
is $mock->foo(1), 'bar';
is $mock->foo, 'else';
frame
Checks how many times the mocked method was called.
my $mock = Test::MonkeyMock->new();
$mock->mock(foo => sub { 'bar' }, frame => 0);
$mock->mock(foo => sub { 'qux' }, frame => 2);
$mock->mock(foo => sub { 'else' });
is $mock->foo, 'bar';
is $mock->foo, 'else';
is $mock->foo, 'qux';
is $mock->foo, 'else';
mocked_call_args($method, $frame)
Returns the arguments during method call. With $frame
you can access the call stack.
mocked_call_stack($method)
Returns the complete call stack of the method.
mocked_called($method)
Returns how many times the method was called.
mocked_return_args($method, $frame)
Returns the return value of the method. With $frame
you can access the call stack.
mocked_return_stack($method)
Returns the complete return stack of the method.
AUTHOR
Viacheslav Tykhanovskyi, viacheslav.t@gmail.com
COPYRIGHT AND LICENSE
Copyright (C) 2012-2014, Viacheslav Tykhanovskyi
This program is free software, you can redistribute it and/or modify it under the terms of the Artistic License version 2.0.
This program is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose.