diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..5547a06
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "tests/test_nearley/nearley"]
+	path = tests/test_nearley/nearley
+	url = https://github.com/kasbah/nearley
diff --git a/lark/tools/nearley.py b/lark/tools/nearley.py
index 735ee6c..1e55b70 100644
--- a/lark/tools/nearley.py
+++ b/lark/tools/nearley.py
@@ -169,51 +169,6 @@ def create_code_for_nearley_grammar(g, start, builtin_path, folder_path):
 
     return ''.join(emit_code)
 
-def test():
-    css_example_grammar = """
-# http://www.w3.org/TR/css3-color/#colorunits
-
-    @builtin "whitespace.ne"
-    @builtin "number.ne"
-    @builtin "postprocessors.ne"
-
-    csscolor -> "#" hexdigit hexdigit hexdigit hexdigit hexdigit hexdigit {%
-        function(d) {
-            return {
-                "r": parseInt(d[1]+d[2], 16),
-                "g": parseInt(d[3]+d[4], 16),
-                "b": parseInt(d[5]+d[6], 16),
-            }
-        }
-    %}
-              | "#" hexdigit hexdigit hexdigit {%
-        function(d) {
-            return {
-                "r": parseInt(d[1]+d[1], 16),
-                "g": parseInt(d[2]+d[2], 16),
-                "b": parseInt(d[3]+d[3], 16),
-            }
-        }
-    %}
-              | "rgb"  _ "(" _ colnum _ "," _ colnum _ "," _ colnum _ ")" {% $({"r": 4, "g": 8, "b": 12}) %}
-              | "hsl"  _ "(" _ colnum _ "," _ colnum _ "," _ colnum _ ")" {% $({"h": 4, "s": 8, "l": 12}) %}
-              | "rgba" _ "(" _ colnum _ "," _ colnum _ "," _ colnum _ "," _ decimal _ ")" {% $({"r": 4, "g": 8, "b": 12, "a": 16}) %}
-              | "hsla" _ "(" _ colnum _ "," _ colnum _ "," _ colnum _ "," _ decimal _ ")" {% $({"h": 4, "s": 8, "l": 12, "a": 16}) %}
-
-    hexdigit -> [a-fA-F0-9]
-    colnum -> unsigned_int {% id %} | percentage {%
-        function(d) {return Math.floor(d[0]*255); }
-    %}
-    """
-    code = create_code_for_nearley_grammar(css_example_grammar, 'csscolor', '/home/erez/nearley/builtin', './')
-    d = {}
-    exec (code, d)
-    parse = d['parse']
-
-    print(parse('#a199ff'))
-    print(parse('rgb(255, 70%, 3)'))
-
-
 def main():
     if len(sys.argv) < 3:
         print("Reads Nearley grammar (with js functions) outputs an equivalent lark parser.")
@@ -228,4 +183,3 @@ def main():
 
 if __name__ == '__main__':
     main()
-    # test()
diff --git a/tests/__main__.py b/tests/__main__.py
index df1c65e..c9fe2ad 100644
--- a/tests/__main__.py
+++ b/tests/__main__.py
@@ -5,6 +5,8 @@ import logging
 
 from .test_trees import TestTrees
 
+from .test_nearley.test_nearley import TestNearley
+
 # from .test_selectors import TestSelectors
 # from .test_grammars import TestPythonG, TestConfigG
 
diff --git a/tests/test_nearley/__init__.py b/tests/test_nearley/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/test_nearley/nearley b/tests/test_nearley/nearley
new file mode 160000
index 0000000..0abb6e5
--- /dev/null
+++ b/tests/test_nearley/nearley
@@ -0,0 +1 @@
+Subproject commit 0abb6e5feef2f4ebf80d5a0891c1ad709011b1c7
diff --git a/tests/test_nearley/test_nearley.py b/tests/test_nearley/test_nearley.py
new file mode 100644
index 0000000..dc8ca08
--- /dev/null
+++ b/tests/test_nearley/test_nearley.py
@@ -0,0 +1,70 @@
+from __future__ import absolute_import
+
+import unittest
+import logging
+import os
+import sys
+
+logging.basicConfig(level=logging.INFO)
+
+from lark.tools.nearley import create_code_for_nearley_grammar
+
+NEARLEY_PATH = os.path.abspath(os.path.join(os.path.dirname(__file__), 'nearley'))
+BUILTIN_PATH = os.path.join(NEARLEY_PATH, 'builtin')
+
+class TestNearley(unittest.TestCase):
+    def test_css(self):
+        css_example_grammar = """
+        # http://www.w3.org/TR/css3-color/#colorunits
+
+        @builtin "whitespace.ne"
+        @builtin "number.ne"
+        @builtin "postprocessors.ne"
+
+        csscolor -> "#" hexdigit hexdigit hexdigit hexdigit hexdigit hexdigit {%
+            function(d) {
+                return {
+                    "r": parseInt(d[1]+d[2], 16),
+                    "g": parseInt(d[3]+d[4], 16),
+                    "b": parseInt(d[5]+d[6], 16),
+                }
+            }
+        %}
+                  | "#" hexdigit hexdigit hexdigit {%
+            function(d) {
+                return {
+                    "r": parseInt(d[1]+d[1], 16),
+                    "g": parseInt(d[2]+d[2], 16),
+                    "b": parseInt(d[3]+d[3], 16),
+                }
+            }
+        %}
+                  | "rgb"  _ "(" _ colnum _ "," _ colnum _ "," _ colnum _ ")" {% $({"r": 4, "g": 8, "b": 12}) %}
+                  | "hsl"  _ "(" _ colnum _ "," _ colnum _ "," _ colnum _ ")" {% $({"h": 4, "s": 8, "l": 12}) %}
+                  | "rgba" _ "(" _ colnum _ "," _ colnum _ "," _ colnum _ "," _ decimal _ ")" {% $({"r": 4, "g": 8, "b": 12, "a": 16}) %}
+                  | "hsla" _ "(" _ colnum _ "," _ colnum _ "," _ colnum _ "," _ decimal _ ")" {% $({"h": 4, "s": 8, "l": 12, "a": 16}) %}
+
+        hexdigit -> [a-fA-F0-9]
+        colnum -> unsigned_int {% id %} | percentage {%
+            function(d) {return Math.floor(d[0]*255); }
+        %}
+        """
+
+        code = create_code_for_nearley_grammar(css_example_grammar, 'csscolor', BUILTIN_PATH, './')
+        d = {}
+        exec (code, d)
+        parse = d['parse']
+
+        c = parse('#a199ff')
+        assert c['r'] == 161
+        assert c['g'] == 153
+        assert c['b'] == 255
+
+        c = parse('rgb(255, 70%, 3)')
+        assert c['r'] == 255
+        assert c['g'] == 178
+        assert c['b'] == 3
+
+
+if __name__ == '__main__':
+    unittest.main()