   end
 
   defp parse_files([single_file], _test_paths) do
-    # Check if the single file path matches test/path/to_test.exs:123, if it does
+    # Check if the single file path matches test/path/to_test.exs:123. If it does,
     # apply "--only line:123" and trim the trailing :123 part.
     {single_file, opts} = ExUnit.Filters.parse_path(single_file)
     ExUnit.configure(opts)


  The `:test_coverage` configuration accepts the following options:

    * `:output` - the output for cover results, defaults to `"cover"`
    * `:tool` - the coverage tool
    * `:summary` - summary output configuration, can be either boolean
      or keyword list. When a keyword list is passed, it can specify `:threshold`
      which can be boolean or numeric value which would enable coloring
      of percentages red/green depending either below/over threshold
      respectively, defaults to `[threshold: 90]`

  By default, a very simple wrapper around OTP's `cover` is used as a tool,
  but it can be overridden as follows:

    * `--only` - runs only tests that match the filter
    * `--preload-modules` - preloads all modules defined in applications
    * `--raise` - raises if the test suite failed
    * `--seed` - seeds the random number generator used to randomize the order of tests;
      `--seed 0` disables randomization
    * `--slowest` - prints timing information for the N slowest tests.
      Automatically sets `--trace` and `--preload-modules`
