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9bec8ef50c
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@33487 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
106 lines
3.1 KiB
Ruby
106 lines
3.1 KiB
Ruby
######################################################################
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# This file is imported from the minitest project.
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# DO NOT make modifications in this repo. They _will_ be reverted!
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# File a patch instead and assign it to Ryan Davis.
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######################################################################
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class MockExpectationError < StandardError; end
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##
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# A simple and clean mock object framework.
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module MiniTest
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##
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# All mock objects are an instance of Mock
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class Mock
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alias :__respond_to? :respond_to?
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skip_methods = %w(object_id respond_to_missing? inspect === to_s)
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instance_methods.each do |m|
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undef_method m unless skip_methods.include?(m.to_s) || m =~ /^__/
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end
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def initialize # :nodoc:
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@expected_calls = {}
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@actual_calls = Hash.new {|h,k| h[k] = [] }
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end
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##
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# Expect that method +name+ is called, optionally with +args+, and returns
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# +retval+.
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#
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# @mock.expect(:meaning_of_life, 42)
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# @mock.meaning_of_life # => 42
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#
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# @mock.expect(:do_something_with, true, [some_obj, true])
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# @mock.do_something_with(some_obj, true) # => true
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#
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# +args+ is compared to the expected args using case equality (ie, the
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# '===' operator), allowing for less specific expectations.
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#
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# @mock.expect(:uses_any_string, true, [String])
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# @mock.uses_any_string("foo") # => true
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# @mock.verify # => true
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#
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# @mock.expect(:uses_one_string, true, ["foo"]
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# @mock.uses_one_string("bar") # => true
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# @mock.verify # => raises MockExpectationError
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def expect(name, retval, args=[])
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@expected_calls[name] = { :retval => retval, :args => args }
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self
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end
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##
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# Verify that all methods were called as expected. Raises
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# +MockExpectationError+ if the mock object was not called as
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# expected.
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def verify
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@expected_calls.each_key do |name|
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expected = @expected_calls[name]
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msg1 = "expected #{name}, #{expected.inspect}"
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msg2 = "#{msg1}, got #{@actual_calls[name].inspect}"
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raise MockExpectationError, msg2 if
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@actual_calls.has_key? name and
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not @actual_calls[name].include?(expected)
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raise MockExpectationError, msg1 unless
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@actual_calls.has_key? name and @actual_calls[name].include?(expected)
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end
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true
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end
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def method_missing(sym, *args) # :nodoc:
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expected = @expected_calls[sym]
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unless expected then
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raise NoMethodError, "unmocked method %p, expected one of %p" %
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[sym, @expected_calls.keys.sort_by(&:to_s)]
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end
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expected_args, retval = expected[:args], expected[:retval]
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unless expected_args.size == args.size
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raise ArgumentError, "mocked method %p expects %d arguments, got %d" %
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[sym, expected[:args].size, args.size]
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end
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@actual_calls[sym] << {
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:retval => retval,
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:args => expected_args.zip(args).map { |mod, a| mod if mod === a }
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}
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retval
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end
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def respond_to?(sym) # :nodoc:
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return true if @expected_calls.has_key?(sym.to_sym)
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return __respond_to?(sym)
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end
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end
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end
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