NAME

Test::Mock::Class::Role::Object - Role for base object of mock class

DESCRIPTION

This role provides an API for defining and changing behavior of mock class.

ATTRIBUTES

_mock_call : HashRef

Count of method calls stored as HashRef.

_mock_expectation : HashRef

Expectations for mock methods stored as HashRef.

_mock_action : HashRef

Return values or actions for mock methods stored as HashRef.

METHODS

mock_tally() : Self

Check the expectations at the end. It should be called expicitly if minimum or count parameter was used for expectation, or following methods was called: mock_expect_at_least_once, mock_add_expectation_call_count, mock_expect_minimum_call_count or mock_expect_once.

mock_invoke( method : Str, args : Array ) : Any

Increases the call counter and returns the expected value for the method name and checks expectations. Will generate any test assertions as a result of expectations if there is a test present.

If more that one expectation matches, all of them are checked. If one of them fails, the whole mock_invoke method is failed.

This method is called in overridden methods of mock class, but you need to call it explicitly if you constructed own method.

mock_return( method : Str, value : Any, :at : Int, :args : ArrayRef[Any] ) : Self

Sets a return for a parameter list that will be passed on by call to this method that match.

The first value is returned if more than one parameter list matches method's arguments. The undef value is returned if none of parameters matches.

method

Method name.

value

Returned value.

$m->mock_return( 'open', 1 );

If value is coderef, then it is called with method name, current timing and original arguments as arguments. It allows to return array rather than scalar.

$m->mock_return( 'sequence', sub {
    qw( one two three )[ $_[1] ]
} );
$m->mock_return( 'get_array', sub { (1,2,3) } );

at

Value is returned only for current timing, started from 0.

$m->mock_return( 'sequence', 'one',   at => 0 );
$m->mock_return( 'sequence', 'two',   at => 1 );
$m->mock_return( 'sequence', 'three', at => 2 );

args

Value is returned only if method is called with proper argument.

$m->mock_return( 'get_value', 'admin', args => ['dbuser'] );
$m->mock_return( 'get_value', 'secret', args => ['dbpass'] );
$m->mock_return( 'get_value', sub { $_[2] }, args => [qr/.*/] );

mock_return_at( at : Int, method : Str, value : Any, :args : ArrayRef[Any] ) : Self

Convenience method for returning a value upon the method call.

mock_throw( method : Str, :at : Int, exception : Str|Object, :args : ArrayRef[Any], params : Hash ) : Self

Sets up a trigger to throw an exception upon the method call. The method takes the same arguments as mock_return.

If an exception parameter is a string, the Exception::Assertion is thrown with this parameter as its message and rest of parameters as its arguments. If an exception parameter is an object reference, the throw method is called on this object with predefined message and rest of parameters as its arguments.

mock_throw_at( at : Int, method : Str, exception : Str|Object, :args : ArrayRef[Any] ) : Self

Convenience method for throwing an error upon the method call.

mock_expect( method : Str, :at : Int, :minimum : Int, :maximum : Int, :count : Int, :args : ArrayRef[Any] ) : Self

Sets up an expected call with a set of expected parameters in that call. Each call will be compared to these expectations regardless of when the call is made. The method takes the same arguments as mock_return.

mock_expect_at( at : Int, method : Str, :args : ArrayRef[Any] ) : Self

Sets up an expected call with a set of expected parameters in that call.

mock_expect_call_count( method : Str, count : Int, :args : ArrayRef[Any] ) : Self

Sets an expectation for the number of times a method will be called. The mock_tally method have to be used to check this.

mock_expect_maximum_call_count( method : Str, count : Int, :args : ArrayRef[Any] ) : Self

Sets the number of times a method may be called before a test failure is triggered.

mock_expect_minimum_call_count( method : Str, count : Int, :args : ArrayRef[Any] ) : Self

Sets the number of times to call a method to prevent a failure on the tally.

mock_expect_never( method : Str, :args : ArrayRef[Any] ) : Self

Convenience method for barring a method call.

mock_expect_once( method : Str, :args : ArrayRef[Any] ) : Self

Convenience method for a single method call.

mock_expect_at_least_once( method : Str, :args : ArrayRef[Any] ) : Self

Convenience method for requiring a method call.

_mock_emulate_call( method : Str, timing : Int, args : Array ) : Any

Finds the return value matching the incoming arguments. If there is no matching value found then an error is triggered.

_mock_add_call( method : Str, args : Array ) : Int

Adds one to the call count of a method and returns previous value.

_mock_check_expectations( method : Str, timing : Num, args : Array ) : Self

Tests the arguments against expectations.

SEE ALSO

Test::Mock::Class.

BUGS

The expectations and return values should be refactored as objects rather than complex structure.

The API is not stable yet and can be changed in future.

AUTHOR

Piotr Roszatycki <dexter@cpan.org>

LICENSE

Based on SimpleTest, an open source unit test framework for the PHP programming language, created by Marcus Baker, Jason Sweat, Travis Swicegood, Perrick Penet and Edward Z. Yang.

Copyright (c) 2009, 2010 Piotr Roszatycki <dexter@cpan.org>.

This program is free software; you can redistribute it and/or modify it under GNU Lesser General Public License.