Fixed ambiguous first argument warning in ArrayExtTest.

activesupport/test/core_ext/array_ext_test.rb

@@ -21,7 +21,7 @@ def to_param
       "#{self}1"
     end
   end
-  
+
   def test_string_array
     assert_equal '', %w().to_param
     assert_equal 'hello/world', %w(hello world).to_param
@@ -31,7 +31,7 @@ def test_string_array
   def test_number_array
     assert_equal '10/20', [10, 20].to_param
   end
-  
+
   def test_to_param_array
     assert_equal 'custom1/param1', [ToParam.new('custom'), ToParam.new('param')].to_param
   end
@@ -222,10 +222,10 @@ def test_to_xml_with_block
 
     assert xml.include?(%(<count>2</count>)), xml
   end
-  
+
   def test_to_xml_with_empty
     xml = [].to_xml
-    assert_match /type="array"\/>/, xml
+    assert_match(/type="array"\/>/, xml)
   end
 end
 
@@ -239,17 +239,15 @@ def test_extract_options
 end
 
 uses_mocha "ArrayExtRandomTests" do
+  class ArrayExtRandomTests < Test::Unit::TestCase
+    def test_random_element_from_array
+      assert_nil [].rand
 
-class ArrayExtRandomTests < Test::Unit::TestCase
-  def test_random_element_from_array
-    assert_nil [].rand
-
-    Kernel.expects(:rand).with(1).returns(0)
-    assert_equal 'x', ['x'].rand
+      Kernel.expects(:rand).with(1).returns(0)
+      assert_equal 'x', ['x'].rand
 
-    Kernel.expects(:rand).with(3).returns(1)
-    assert_equal 2, [1, 2, 3].rand
+      Kernel.expects(:rand).with(3).returns(1)
+      assert_equal 2, [1, 2, 3].rand
+    end
   end
 end
-
-end