raise LoadError when a non-existent file or directory is specified to the test runner

Currently, if a file or directory that does not exist was specified in the test runner,
that argument is ignored.
This commit has been modified to cause an error if there is no file or directory.

2 files changed, 6 insertions, 1 deletions

diff --git a/railties/lib/rails/test_unit/test_requirer.rb b/railties/lib/rails/test_unit/test_requirer.rb
index 84c2256729..83d2c55ffd 100644
--- a/railties/lib/rails/test_unit/test_requirer.rb
+++ b/railties/lib/rails/test_unit/test_requirer.rb
@@ -18,7 +18,7 @@ module Rails
             arg = arg.gsub(/:(\d+)?$/, '')
             if Dir.exist?(arg)
               "#{arg}/**/*_test.rb"
-            elsif File.file?(arg)
+            else
               arg
             end
           end
diff --git a/railties/test/application/test_runner_test.rb b/railties/test/application/test_runner_test.rb
index 494e6dd7bd..2d47a31826 100644
--- a/railties/test/application/test_runner_test.rb
+++ b/railties/test/application/test_runner_test.rb
@@ -340,6 +340,11 @@ module ApplicationTests
       assert_match '0 runs, 0 assertions', run_test_command('')
     end
 
+    def test_raise_error_when_specified_file_does_not_exist
+      error = capture(:stderr) { run_test_command('test/not_exists.rb') }
+      assert_match(%r{cannot load such file.+test/not_exists\.rb}, error)
+    end
+
     private
       def run_test_command(arguments = 'test/unit/test_test.rb')
         Dir.chdir(app_path) { `bin/rails t #{arguments}` }