/usr/lib/ruby/1.9.1/minitest/mock.rb is in libruby1.9.1 1.9.3.484-2ubuntu1.
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# This file is imported from the minitest project.
# DO NOT make modifications in this repo. They _will_ be reverted!
# File a patch instead and assign it to Ryan Davis.
######################################################################
class MockExpectationError < StandardError; end
##
# A simple and clean mock object framework.
module MiniTest
##
# All mock objects are an instance of Mock
class Mock
alias :__respond_to? :respond_to?
skip_methods = %w(object_id respond_to_missing? inspect === to_s)
instance_methods.each do |m|
undef_method m unless skip_methods.include?(m.to_s) || m =~ /^__/
end
def initialize # :nodoc:
@expected_calls = {}
@actual_calls = Hash.new {|h,k| h[k] = [] }
end
##
# Expect that method +name+ is called, optionally with +args+, and returns
# +retval+.
#
# @mock.expect(:meaning_of_life, 42)
# @mock.meaning_of_life # => 42
#
# @mock.expect(:do_something_with, true, [some_obj, true])
# @mock.do_something_with(some_obj, true) # => true
#
# +args+ is compared to the expected args using case equality (ie, the
# '===' operator), allowing for less specific expectations.
#
# @mock.expect(:uses_any_string, true, [String])
# @mock.uses_any_string("foo") # => true
# @mock.verify # => true
#
# @mock.expect(:uses_one_string, true, ["foo"]
# @mock.uses_one_string("bar") # => true
# @mock.verify # => raises MockExpectationError
def expect(name, retval, args=[])
@expected_calls[name] = { :retval => retval, :args => args }
self
end
##
# Verify that all methods were called as expected. Raises
# +MockExpectationError+ if the mock object was not called as
# expected.
def verify
@expected_calls.each_key do |name|
expected = @expected_calls[name]
msg1 = "expected #{name}, #{expected.inspect}"
msg2 = "#{msg1}, got #{@actual_calls[name].inspect}"
raise MockExpectationError, msg2 if
@actual_calls.has_key? name and
not @actual_calls[name].include?(expected)
raise MockExpectationError, msg1 unless
@actual_calls.has_key? name and @actual_calls[name].include?(expected)
end
true
end
def method_missing(sym, *args) # :nodoc:
expected = @expected_calls[sym]
unless expected then
raise NoMethodError, "unmocked method %p, expected one of %p" %
[sym, @expected_calls.keys.sort_by(&:to_s)]
end
expected_args, retval = expected[:args], expected[:retval]
unless expected_args.size == args.size
raise ArgumentError, "mocked method %p expects %d arguments, got %d" %
[sym, expected[:args].size, args.size]
end
@actual_calls[sym] << {
:retval => retval,
:args => expected_args.zip(args).map { |mod, a| mod if mod === a }
}
retval
end
def respond_to?(sym) # :nodoc:
return true if @expected_calls.has_key?(sym)
return __respond_to?(sym)
end
end
end
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