5 files changed, 13 insertions, 3 deletions
diff --git a/railties/lib/rails/test_unit/line_filtering.rb b/railties/lib/rails/test_unit/line_filtering.rb
index 289afae331..f8ca77fe4a 100644
--- a/railties/lib/rails/test_unit/line_filtering.rb
+++ b/railties/lib/rails/test_unit/line_filtering.rb
@@ -1,4 +1,5 @@
-require "method_source"
+# frozen_string_literal: true
+
 require "rails/test_unit/runner"
 
 module Rails
diff --git a/railties/lib/rails/test_unit/railtie.rb b/railties/lib/rails/test_unit/railtie.rb
index f1965f3b12..05f9a177d0 100644
--- a/railties/lib/rails/test_unit/railtie.rb
+++ b/railties/lib/rails/test_unit/railtie.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative "line_filtering"
 
 if defined?(Rake.application) && Rake.application.top_level_tasks.grep(/^(default$|test(:|$))/).any?
diff --git a/railties/lib/rails/test_unit/reporter.rb b/railties/lib/rails/test_unit/reporter.rb
index ab28034d27..7d3164f1eb 100644
--- a/railties/lib/rails/test_unit/reporter.rb
+++ b/railties/lib/rails/test_unit/reporter.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "active_support/core_ext/class/attribute"
 require "minitest"
 
diff --git a/railties/lib/rails/test_unit/runner.rb b/railties/lib/rails/test_unit/runner.rb
index 8018ef9d02..5c2f6451e2 100644
--- a/railties/lib/rails/test_unit/runner.rb
+++ b/railties/lib/rails/test_unit/runner.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "shellwords"
 require "method_source"
 require "rake/file_list"
@@ -9,7 +11,7 @@ module Rails
       mattr_reader :filters, default: []
 
       class << self
-        def options(opts)
+        def attach_before_load_options(opts)
           opts.on("--warnings", "-w", "Run with Ruby warnings enabled") {}
           opts.on("--environment", "-e", "Run tests in the ENV environment") {}
         end
@@ -58,7 +60,8 @@ module Rails
 
         private
           def extract_filters(argv)
-            argv.select { |arg| arg =~ /^\w+\// }.map do |path|
+            # Extract absolute and relative paths but skip -n /.*/ regexp filters.
+            argv.select { |arg| arg =~ %r%^/?\w+/% && !arg.end_with?("/") }.map do |path|
               case
               when path =~ /(:\d+)+$/
                 file, *lines = path.split(":")
diff --git a/railties/lib/rails/test_unit/testing.rake b/railties/lib/rails/test_unit/testing.rake
index 97dd5cef10..18d699f806 100644
--- a/railties/lib/rails/test_unit/testing.rake
+++ b/railties/lib/rails/test_unit/testing.rake
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 gem "minitest"
 require "minitest"
 require_relative "runner"