Add tests

Author: josevalim

lib/iex/test/iex/config_test.exs

@@ -0,0 +1,23 @@
+Code.require_file("../test_helper.exs", __DIR__)
+
+defmodule IEx.ConfigTest do
+  use ExUnit.Case, async: true
+
+  import IEx.Config
+
+  describe "prompt" do
+    test "converts everything before opening parens to dots" do
+      assert prompt(~c"iex(321)>") == ~c"...(321)>"
+      assert prompt(~c"foo-bar(321)>") == ~c".......(321)>"
+    end
+
+    test "falls back to Erlang wit no parens around" do
+      assert prompt(~c"foo-bar>") == ~c"     .. "
+    end
+
+    test "ignores ansi escapes" do
+      assert prompt(~c"#{IO.ANSI.red()}iex(foo)>") == ~c"...(foo)>"
+      assert prompt(~c"#{IO.ANSI.red()}foo-bar>") == ~c"     .. "
+    end
+  end
+end