Elixir Test Runner - Test Driven Development with Entr

README.md

Install entr:

https://github.com/clibs/entr

Add this to .bashrc

elixir_test() {
  if [[ $# -eq 0 ]] ; then
    find . -name '*.ex' -o \
           -name '*.exs' -o \
           -name '*.eex' | \
           entr mix test
  else
    find . -name '*.ex' -o \
           -name '*.exs' -o \
           -name '*.eex' | \
           entr mix test --include $1 --exclude test
  fi
}

From command line, in an elixir project:

$ elixir_test

This will run the tests whenever file change event is detected.

For more focused testing, you can run this:

$ elixir_test focus

And update your tests like this:

  describe "using entr for test driven development" do
    @tag :focus
    test "only this test will be run" do
      assert true
    end

    test "this test will not be run" do
      assert true
    end
  end

Happy coding...