Fix an incorrect autocorrect for Minitest/RefuteMatch

Follow up rubocop#181 and rubocop#184.

This PR fixes an incorrect autocorrect for `Minitest/AssertMatch`
when `refute` with `match` and RHS is a regexp literal.

A regular expression literal must be the first argument to `refute_match`.
`TypeError: no implicit conversion of Regexp into String` will occur if it is
passed as the second argument.

```ruby
refute_match(object, /regexp/) #=> TypeError: no implicit conversion of Regexp into String
```

changelog/fix_an_incorrect_autocorrect_for_minitest_refute_match.md

@@ -0,0 +1 @@
+* [#185](https://github.com/rubocop/rubocop-minitest/pull/185): Fix an incorrect autocorrect for `Minitest/RefuteMatch` when `refute` with `match` and RHS is a regexp literal. ([@koic][])

lib/rubocop/cop/minitest/refute_match.rb

@@ -18,7 +18,7 @@ module Minitest
       class RefuteMatch < Base
         extend MinitestCopRule
 
-        define_rule :refute, target_method: :match
+        define_rule :refute, target_method: :match, inverse: 'regexp_type?'
       end
     end
   end

test/rubocop/cop/minitest/refute_match_test.rb

@@ -22,6 +22,44 @@ def test_do_something
     RUBY
   end
 
+  def test_registers_offense_when_using_refute_with_match_and_lhs_is_regexp_literal
+    assert_offense(<<~RUBY)
+      class FooTest < Minitest::Test
+        def test_do_something
+          refute(/regexp/.match(object))
+          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `refute_match(/regexp/, object)`.
+        end
+      end
+    RUBY
+
+    assert_correction(<<~RUBY)
+      class FooTest < Minitest::Test
+        def test_do_something
+          refute_match(/regexp/, object)
+        end
+      end
+    RUBY
+  end
+
+  def test_registers_offense_when_using_refute_with_match_and_rhs_is_regexp_literal
+    assert_offense(<<~RUBY)
+      class FooTest < Minitest::Test
+        def test_do_something
+          refute(object.match(/regexp/))
+          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer using `refute_match(/regexp/, object)`.
+        end
+      end
+    RUBY
+
+    assert_correction(<<~RUBY)
+      class FooTest < Minitest::Test
+        def test_do_something
+          refute_match(/regexp/, object)
+        end
+      end
+    RUBY
+  end
+
   def test_registers_offense_when_using_refute_with_match_and_message
     assert_offense(<<~RUBY)
       class FooTest < Minitest::Test
@@ -94,4 +132,24 @@ def test_do_something
       end
     RUBY
   end
+
+  def test_does_not_register_offense_when_using_refute_with_no_arguments_match_call
+    assert_no_offenses(<<~RUBY)
+      class FooTest < Minitest::Test
+        def test_do_something
+          refute(matcher.match)
+        end
+      end
+    RUBY
+  end
+
+  def test_does_not_register_offense_when_using_refute_with_no_arguments_match_safe_navigation_call
+    assert_no_offenses(<<~RUBY)
+      class FooTest < Minitest::Test
+        def test_do_something
+          refute(matcher&.match)
+        end
+      end
+    RUBY
+  end
 end