 
     unless System.get_env("MIX_ENV") || Mix.env() == :test do
       Mix.raise(
-        "\"mix test\" is running on environment \"#{Mix.env()}\". If you are " <>
-          "running tests along another task, please set MIX_ENV explicitly"
+        "\"mix test\" is running in the \"#{Mix.env()}\" environment. If you are " <>
+          "running tests alongside another task, please set MIX_ENV explicitly"
       )
     end
 


  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:

      mix test --include external

  Note that all tests are included by default, so unless they are excluded
  first (either in the test helper or via the `--exclude` option) the
  `--include` flag has no effect.

  For this reason, Mix also provides an `--only` option that excludes all
