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@@ -4,6 +4,7 @@
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 Trunk
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 -----
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+* 2008/03/02 - Added should observe (Luke Melia)
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 * 2008/03/02 - Patched validates_length_of to use within to be consistent with Rails (Matt Pelletier)
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 * 2007/01/03 - Initial Public Release

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@@ -51,6 +51,11 @@
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     object.should validate_length_of(:attribute, :is => 5)
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     TM snippet: [msvl + tab]
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+  * Observers:
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+    Verify that the observer is observing a class. (doesn't verify that the observation works)
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+    
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+    object.should observe(:model)
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+    example: GroupObserver.should observe(Group)
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   * Views:
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     Verifies that the views contains some tags.
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@@ -173,7 +178,9 @@
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 Contributors
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 -------------
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-  * ckknight (improved should validate_length_of)
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+  * ckknight
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+  * Matt Pelletier
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+  * Luke Melia
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 Copyright (c) 2008 The Plugin Development Team, released under the MIT license

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@@ -1,4 +1,6 @@
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+require 'spec/rails/matchers/observers'
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 require 'spec/rails/matchers/associations'
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 require 'spec/rails/matchers/validations'
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 require 'spec/rails/matchers/views'
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+require 'spec/rails/matchers/observers'

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@@ -1 +1,35 @@
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+module Spec
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+  module Rails
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+    module Matchers
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+
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+      class Observe
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+        def initialize(expected_model_class)
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+          @expected_model_class = expected_model_class
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+        end
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+    
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+        def matches?(observer)
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+          @observer = observer
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+          if @observer.is_a?(ActiveRecord::Observer)
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+            @observer = @observer.class
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+          end
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+          @observed_classes = observer.observed_classes.flatten
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+          @observed_classes.include?(@expected_model_class)
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+        end
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+    
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+        def failure_message
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+          return "expected #{@observer.name} to observe #{@expected_model_class.name}, but it was not included in [#{@observed_classes.map(&:name).join(', ')}]"
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+        end
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+    
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+        def description
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+          "observer to be observing #{@expected_model_class.name}"
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+        end
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+      end
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+
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+      def observe(expected_model_class)
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+        Observe.new(expected_model_class)
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+      end
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+      
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+    end
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+  end
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+end