new_contents: import parsenvy
  
  
  def test_set_several(monkeypatch):
      """'bar,baz,barf'"""
      monkeypatch.setenv("foo", "bar,baz,barf")
  
      assert parsenvy.set("foo") == {"bar", "baz", "barf"}
  
  
  def test_set_one(monkeypatch):
      """'bar'"""
      monkeypatch.setenv("foo", "bar")
  
      assert parsenvy.set("foo") == {"bar"}
  
  
  def test_set_one_comma(monkeypatch):
      """','"""
      monkeypatch.setenv("foo", ",")
  
      assert parsenvy.set("foo") == {"", ""}
  
  
  def test_set_multiple_commas(monkeypatch):
      """',,,'"""
      monkeypatch.setenv("foo", ",,,")
  
      assert parsenvy.set("foo") == {"", "", "", ""}
  
  
  def test_set_empty(monkeypatch):
      """''"""
      monkeypatch.setenv("foo", "")
  
      assert parsenvy.set("foo", {"bar"}) == {"bar"}
  
subject: Add set tests