diff --git a/guides/source/testing.md b/guides/source/testing.md
index 62c9835fa4..2c5b1712cc 100644
--- a/guides/source/testing.md
+++ b/guides/source/testing.md
@@ -357,28 +357,28 @@ Here's an extract of the assertions you can use with `minitest`, the default tes
 | Assertion                                                        | Purpose |
 | ---------------------------------------------------------------- | ------- |
 | `assert( test, [msg] )`                                          | Ensures that `test` is true.|
-| `refute( test, [msg] )`                                          | Ensures that `test` is false.|
+| `assert_not( test, [msg] )`                                      | Ensures that `test` is false.|
 | `assert_equal( expected, actual, [msg] )`                        | Ensures that `expected == actual` is true.|
-| `refute_equal( expected, actual, [msg] )`                        | Ensures that `expected != actual` is true.|
+| `assert_not_equal( expected, actual, [msg] )`                    | Ensures that `expected != actual` is true.|
 | `assert_same( expected, actual, [msg] )`                         | Ensures that `expected.equal?(actual)` is true.|
-| `refute_same( expected, actual, [msg] )`                         | Ensures that `expected.equal?(actual)` is false.|
+| `assert_not_same( expected, actual, [msg] )`                     | Ensures that `expected.equal?(actual)` is false.|
 | `assert_nil( obj, [msg] )`                                       | Ensures that `obj.nil?` is true.|
-| `refute_nil( obj, [msg] )`                                       | Ensures that `obj.nil?` is false.|
+| `assert_not_nil( obj, [msg] )`                                   | Ensures that `obj.nil?` is false.|
 | `assert_match( regexp, string, [msg] )`                          | Ensures that a string matches the regular expression.|
-| `refute_match( regexp, string, [msg] )`                          | Ensures that a string doesn't match the regular expression.|
+| `assert_no_match( regexp, string, [msg] )`                       | Ensures that a string doesn't match the regular expression.|
 | `assert_in_delta( expecting, actual, [delta], [msg] )`           | Ensures that the numbers `expected` and `actual` are within `delta` of each other.|
-| `refute_in_delta( expecting, actual, [delta], [msg] )`           | Ensures that the numbers `expected` and `actual` are not within `delta` of each other.|
+| `assert_not_in_delta( expecting, actual, [delta], [msg] )`       | Ensures that the numbers `expected` and `actual` are not within `delta` of each other.|
 | `assert_throws( symbol, [msg] ) { block }`                       | Ensures that the given block throws the symbol.|
 | `assert_raises( exception1, exception2, ... ) { block }`         | Ensures that the given block raises one of the given exceptions.|
 | `assert_nothing_raised( exception1, exception2, ... ) { block }` | Ensures that the given block doesn't raise one of the given exceptions.|
 | `assert_instance_of( class, obj, [msg] )`                        | Ensures that `obj` is an instance of `class`.|
-| `refute_instance_of( class, obj, [msg] )`                        | Ensures that `obj` is not an instance of `class`.|
+| `assert_not_instance_of( class, obj, [msg] )`                    | Ensures that `obj` is not an instance of `class`.|
 | `assert_kind_of( class, obj, [msg] )`                            | Ensures that `obj` is or descends from `class`.|
-| `refute_kind_of( class, obj, [msg] )`                            | Ensures that `obj` is not an instance of `class` and is not descending from it.|
+| `assert_not_kind_of( class, obj, [msg] )`                        | Ensures that `obj` is not an instance of `class` and is not descending from it.|
 | `assert_respond_to( obj, symbol, [msg] )`                        | Ensures that `obj` responds to `symbol`.|
-| `refute_respond_to( obj, symbol, [msg] )`                        | Ensures that `obj` does not respond to `symbol`.|
+| `assert_not_respond_to( obj, symbol, [msg] )`                    | Ensures that `obj` does not respond to `symbol`.|
 | `assert_operator( obj1, operator, [obj2], [msg] )`               | Ensures that `obj1.operator(obj2)` is true.|
-| `refute_operator( obj1, operator, [obj2], [msg] )`               | Ensures that `obj1.operator(obj2)` is false.|
+| `assert_not_operator( obj1, operator, [obj2], [msg] )`           | Ensures that `obj1.operator(obj2)` is false.|
 | `assert_send( array, [msg] )`                                    | Ensures that executing the method listed in `array[1]` on the object in `array[0]` with the parameters of `array[2 and up]` is true. This one is weird eh?|
 | `flunk( [msg] )`                                                 | Ensures failure. This is useful to explicitly mark a test that isn't finished yet.|