1 files changed, 26 insertions, 0 deletions
diff --git a/railties/test/test_unit/runner_test.rb b/railties/test/test_unit/runner_test.rb
index cfc1d897b9..fa906d4080 100644
--- a/railties/test/test_unit/runner_test.rb
+++ b/railties/test/test_unit/runner_test.rb
@@ -18,4 +18,30 @@ class TestUnitTestRunnerTest < ActiveSupport::TestCase
     options = @options.parse(["--backtrace"])
     assert options[:backtrace]
   end
+
+  test "parse the filename and line" do
+    options = @options.parse(["foobar.rb:20"])
+    assert_equal File.expand_path("foobar.rb"), options[:filename]
+    assert_equal 20, options[:line]
+
+    options = @options.parse(["foobar.rb:"])
+    assert_equal File.expand_path("foobar.rb"), options[:filename]
+    assert_nil options[:line]
+
+    options = @options.parse(["foobar.rb"])
+    assert_equal File.expand_path("foobar.rb"), options[:filename]
+    assert_nil options[:line]
+  end
+
+  test "find_method on same file" do
+    options = @options.parse(["#{__FILE__}:#{__LINE__}"])
+    runner = Rails::TestRunner.new(options)
+    assert_equal "test_find_method_on_same_file", runner.find_method
+  end
+
+  test "find_method on a different file" do
+    options = @options.parse(["foobar.rb:#{__LINE__}"])
+    runner = Rails::TestRunner.new(options)
+    assert_nil runner.find_method
+  end
 end