Use assert_match instead of assert_equal to test the error message. (…

…mame)

[git-p4: depot-paths = "//src/minitest/dev/": change = 13271]

test/minitest/test_minitest_mock.rb

@@ -133,7 +133,7 @@ def test_expect_with_non_array_args
       @mock.expect :blah, 3, false
     end
 
-    assert_equal "args must be an array", e.message
+    assert_match "args must be an array", e.message
   end
 
   def test_respond_appropriately
@@ -150,7 +150,7 @@ def test_no_method_error_on_unexpected_methods
 
     expected = "unmocked method :bar, expected one of [:foo, :meaning_of_life]"
 
-    assert_equal expected, e.message
+    assert_match expected, e.message
   end
 
   def test_assign_per_mock_return_values
@@ -309,7 +309,7 @@ def test_mock_block_throws_if_args_passed
 
     exp = "args ignored when block given"
 
-    assert_equal exp, e.message
+    assert_match exp, e.message
   end
 
   def test_mock_returns_retval_when_called_with_block
@@ -822,7 +822,7 @@ def test_stub_value_block_args_5__break_if_not_passed
       end
     end
     exp = "undefined method `write' for nil:NilClass"
-    assert_equal exp, e.message
+    assert_match exp, e.message
   end
 
   def test_stub_value_block_args_6