Parse strings or char lists

Author: Josh Price

lib/graphql.ex

@@ -5,8 +5,14 @@ defmodule Graphql do
     tokens
   end
 
+  def parse(input_string) when is_binary(input_string) do
+    input_string |> to_char_list |> parse
+  end
+
   def parse(input_string) do
-    {:ok, parse_result} = :graphql_parser.parse tokenize(input_string)
+    {:ok, parse_result} = input_string
+      |> tokenize
+      |> :graphql_parser.parse
     parse_result
   end
 

test/graphql_test.exs

@@ -0,0 +1,15 @@
+defmodule GraphqlTest do
+  use ExUnit.Case
+
+  def assert_parse(input_string, expected_output) do
+    assert Graphql.parse(input_string) == expected_output
+  end
+
+  test "parse char list" do
+    assert_parse '{ hero }', [ {[ 'hero' ]} ]
+  end
+
+  test "parse string" do
+    assert_parse "{ hero }", [ {[ 'hero' ]} ]
+  end
+end