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# frozen_string_literal: true
require 'mocha/parameter_matchers/base_methods'
module Mocha
module ParameterMatchers
module Methods
# Matches any object that is an instance of +klass+
#
# @param [Class] klass expected class.
# @return [InstanceOf] parameter matcher.
#
# @see Expectation#with
# @see Kernel#instance_of?
#
# @example Actual parameter is an instance of +String+.
# object = mock()
# object.expects(:method_1).with(instance_of(String))
# object.method_1('string')
# # no error raised
#
# @example Actual parameter is not an instance of +String+.
# object = mock()
# object.expects(:method_1).with(instance_of(String))
# object.method_1(99)
# # error raised, because method_1 was not called with an instance of String
def instance_of(klass)
InstanceOf.new(klass)
end
end
# Parameter matcher which matches when actual parameter is an instance of the specified class.
class InstanceOf
include BaseMethods
# @private
def initialize(klass)
@klass = klass
end
# @private
def matches?(available_parameters)
parameter = available_parameters.shift
parameter.instance_of?(@klass)
end
# @private
def mocha_inspect
"instance_of(#{@klass.mocha_inspect})"
end
end
end
end
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