Merge pull request #45085 from shouichi/test-with-leading-dot-slash

Fix rails test command to handle leading dot slash

railties/CHANGELOG.md

@@ -1,3 +1,9 @@
+*   Allow relative paths with leading dot slash to be passed to `rails test`.
+
+    Fix `rails test ./test/model/post_test.rb` to run a single test file.
+
+    *Shouichi Kamiya* and *oljfte*
+
 *   Deprecate `config.enable_dependency_loading`. This flag addressed a limitation of the `classic` autoloader and has no effect nowadays. To fix this deprecation, please just delete the reference.
 
     *Xavier Noria*

railties/lib/rails/test_unit/runner.rb

@@ -89,7 +89,7 @@ module Rails
           end
 
           def path_argument?(arg)
-            %r"^[/\\]?\w+[/\\]".match?(arg)
+            %r"^\.*[/\\]?\w+[/\\]".match?(arg)
           end
 
           def list_tests(argv)

railties/test/application/test_runner_test.rb

@@ -296,6 +296,16 @@ module ApplicationTests
       end
     end
 
+    def test_run_relative_path_with_leading_dot_slash
+      create_test_file :models, "account"
+      create_test_file :models, "post"
+
+      run_test_command("./test/models/account_test.rb").tap do |output|
+        assert_match "AccountTest", output
+        assert_match "1 runs, 1 assertions, 0 failures, 0 errors, 0 skips", output
+      end
+    end
+
     def test_run_windows_style_path
       create_test_file :models, "account"
       create_test_file :controllers, "accounts_controller"