added RSpec and RSpec on Rails

vendor/gems/rspec-1.1.2/lib/spec/mocks/message_expectation.rb

@@ -0,0 +1,267 @@
+module Spec
+  module Mocks
+
+    class BaseExpectation
+      attr_reader :sym
+      
+      def initialize(error_generator, expectation_ordering, expected_from, sym, method_block, expected_received_count=1, opts={})
+        @error_generator = error_generator
+        @error_generator.opts = opts
+        @expected_from = expected_from
+        @sym = sym
+        @method_block = method_block
+        @return_block = nil
+        @actual_received_count = 0
+        @expected_received_count = expected_received_count
+        @args_expectation = ArgumentExpectation.new([AnyArgsConstraint.new])
+        @consecutive = false
+        @exception_to_raise = nil
+        @symbol_to_throw = nil
+        @order_group = expectation_ordering
+        @at_least = nil
+        @at_most = nil
+        @args_to_yield = []
+      end
+      
+      def expected_args
+        @args_expectation.args
+      end
+
+      def and_return(*values, &return_block)
+        Kernel::raise AmbiguousReturnError unless @method_block.nil?
+        case values.size
+          when 0 then value = nil
+          when 1 then value = values[0]
+        else
+          value = values
+          @consecutive = true
+          @expected_received_count = values.size if !ignoring_args? &&
+                                                    @expected_received_count < values.size
+        end
+        @return_block = block_given? ? return_block : lambda { value }
+        # Ruby 1.9 - see where this is used below
+        @ignore_args = !block_given?
+      end
+      
+      # :call-seq:
+      #   and_raise()
+      #   and_raise(Exception) #any exception class
+      #   and_raise(exception) #any exception object
+      #
+      # == Warning
+      #
+      # When you pass an exception class, the MessageExpectation will
+      # raise an instance of it, creating it with +new+. If the exception
+      # class initializer requires any parameters, you must pass in an
+      # instance and not the class.
+      def and_raise(exception=Exception)
+        @exception_to_raise = exception
+      end
+      
+      def and_throw(symbol)
+        @symbol_to_throw = symbol
+      end
+      
+      def and_yield(*args)
+        @args_to_yield << args
+        self
+      end
+  
+      def matches(sym, args)
+        @sym == sym and @args_expectation.check_args(args)
+      end
+      
+      def invoke(args, block)
+        @order_group.handle_order_constraint self
+
+        begin
+          Kernel::raise @exception_to_raise unless @exception_to_raise.nil?
+          Kernel::throw @symbol_to_throw unless @symbol_to_throw.nil?
+          
+          if !@method_block.nil?
+            default_return_val = invoke_method_block(args)
+          elsif @args_to_yield.size > 0
+            default_return_val = invoke_with_yield(block)
+          else
+            default_return_val = nil
+          end
+          
+          if @consecutive
+            return invoke_consecutive_return_block(args, block)
+          elsif @return_block
+            return invoke_return_block(args, block)
+          else
+            return default_return_val
+          end
+        ensure
+          @actual_received_count += 1
+        end
+      end
+      
+      protected
+
+      def invoke_method_block(args)
+        begin
+          @method_block.call(*args)
+        rescue => detail
+          @error_generator.raise_block_failed_error @sym, detail.message
+        end
+      end
+      
+      def invoke_with_yield(block)
+        if block.nil?
+          @error_generator.raise_missing_block_error @args_to_yield
+        end
+        @args_to_yield.each do |args_to_yield_this_time|
+          if block.arity > -1 && args_to_yield_this_time.length != block.arity
+            @error_generator.raise_wrong_arity_error args_to_yield_this_time, block.arity
+          end
+          block.call(*args_to_yield_this_time)
+        end
+      end
+      
+      def invoke_consecutive_return_block(args, block)
+        args << block unless block.nil?
+        value = @return_block.call(*args)
+        
+        index = [@actual_received_count, value.size-1].min
+        value[index]
+      end
+      
+      def invoke_return_block(args, block)
+        args << block unless block.nil?
+        # Ruby 1.9 - when we set @return_block to return values
+        # regardless of arguments, any arguments will result in
+        # a "wrong number of arguments" error
+        if @ignore_args
+          @return_block.call()
+        else
+          @return_block.call(*args)
+        end
+      end
+    end
+    
+    class MessageExpectation < BaseExpectation
+      
+      def matches_name_but_not_args(sym, args)
+        @sym == sym and not @args_expectation.check_args(args)
+      end
+       
+      def verify_messages_received        
+        return if ignoring_args? || matches_exact_count? ||
+           matches_at_least_count? || matches_at_most_count?
+    
+        generate_error
+      rescue Spec::Mocks::MockExpectationError => error
+        error.backtrace.insert(0, @expected_from)
+        Kernel::raise error
+      end
+      
+      def ignoring_args?
+        @expected_received_count == :any
+      end
+      
+      def matches_at_least_count?
+        @at_least && @actual_received_count >= @expected_received_count
+      end
+      
+      def matches_at_most_count?
+        @at_most && @actual_received_count <= @expected_received_count
+      end
+      
+      def matches_exact_count?
+        @expected_received_count == @actual_received_count
+      end
+      
+      def generate_error
+        @error_generator.raise_expectation_error(@sym, @expected_received_count, @actual_received_count, *@args_expectation.args)
+      end
+
+      def with(*args, &block)
+        @method_block = block if block
+        @args_expectation = ArgumentExpectation.new(args)
+        self
+      end
+      
+      def exactly(n)
+        set_expected_received_count :exactly, n
+        self
+      end
+      
+      def at_least(n)
+        set_expected_received_count :at_least, n
+        self
+      end
+      
+      def at_most(n)
+        set_expected_received_count :at_most, n
+        self
+      end
+
+      def times(&block)
+        @method_block = block if block
+        self
+      end
+  
+      def any_number_of_times(&block)
+        @method_block = block if block
+        @expected_received_count = :any
+        self
+      end
+  
+      def never
+        @expected_received_count = 0
+        self
+      end
+  
+      def once(&block)
+        @method_block = block if block
+        @expected_received_count = 1
+        self
+      end
+  
+      def twice(&block)
+        @method_block = block if block
+        @expected_received_count = 2
+        self
+      end
+  
+      def ordered(&block)
+        @method_block = block if block
+        @order_group.register(self)
+        @ordered = true
+        self
+      end
+      
+      def negative_expectation_for?(sym)
+        return false
+      end
+      
+      protected
+        def set_expected_received_count(relativity, n)
+          @at_least = (relativity == :at_least)
+          @at_most = (relativity == :at_most)
+          @expected_received_count = case n
+            when Numeric
+              n
+            when :once
+              1
+            when :twice
+              2
+          end
+        end
+      
+    end
+    
+    class NegativeMessageExpectation < MessageExpectation
+      def initialize(message, expectation_ordering, expected_from, sym, method_block)
+        super(message, expectation_ordering, expected_from, sym, method_block, 0)
+      end
+      
+      def negative_expectation_for?(sym)
+        return @sym == sym
+      end
+    end
+    
+  end
+end