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@@ -177,26 +177,49 @@ module ThoughtBot # :nodoc:
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         klass = model_class
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         min_length = range.first
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         max_length = range.last
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+        same_length = (min_length == max_length)
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         if min_length > 0
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-          min_value = "x" * (min_length - 1)
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           should "not allow #{attribute} to be less than #{min_length} chars long" do
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+            min_value = "x" * (min_length - 1)
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             assert object = klass.find(:first), "Can't find first #{klass}"
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             object.send("#{attribute}=", min_value)
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             assert !object.save, "Saved #{klass} with #{attribute} set to \"#{min_value}\""
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-            assert object.errors.on(attribute), "There are no errors set on #{attribute} after being set to \"#{min_value}\""
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+            assert object.errors.on(attribute), 
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+                   "There are no errors set on #{attribute} after being set to \"#{min_value}\""
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             assert_contains(object.errors.on(attribute), short_message, "when set to \"#{min_value}\"")
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           end
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         end
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+
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+        if min_length > 0
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+          should "allow #{attribute} to be exactly #{min_length} chars long" do
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+            min_value = "x" * min_length
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+            assert object = klass.find(:first), "Can't find first #{klass}"
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+            object.send("#{attribute}=", min_value)
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+            object.save
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+            assert_does_not_contain(object.errors.on(attribute), short_message, "when set to \"#{min_value}\"")
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+          end
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+        end
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-        max_value = "x" * (max_length + 1)
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         should "not allow #{attribute} to be more than #{max_length} chars long" do
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+          max_value = "x" * (max_length + 1)
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           assert object = klass.find(:first), "Can't find first #{klass}"
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           object.send("#{attribute}=", max_value)
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           assert !object.save, "Saved #{klass} with #{attribute} set to \"#{max_value}\""
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-          assert object.errors.on(attribute), "There are no errors set on #{attribute} after being set to \"#{max_value}\""
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+          assert object.errors.on(attribute), 
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+                 "There are no errors set on #{attribute} after being set to \"#{max_value}\""
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           assert_contains(object.errors.on(attribute), long_message, "when set to \"#{max_value}\"")
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         end
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+
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+        unless same_length
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+          should "allow #{attribute} to be exactly #{max_length} chars long" do
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+            max_value = "x" * max_length
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+            assert object = klass.find(:first), "Can't find first #{klass}"
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+            object.send("#{attribute}=", max_value)
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+            object.save
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+            assert_does_not_contain(object.errors.on(attribute), long_message, "when set to \"#{max_value}\"")
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+          end
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+        end
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       end    
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       # Ensure that the attribute is in the range specified