add kv_dup tests

tests/test_kv_dup.py

@@ -0,0 +1,44 @@
+import os
+import unittest
+import jc.parsers.kv_dup
+
+THIS_DIR = os.path.dirname(os.path.abspath(__file__))
+
+
+class MyTests(unittest.TestCase):
+
+    def test_kv_dup_nodata(self):
+        """
+        Test the test kv file with no data
+        """
+        self.assertEqual(jc.parsers.kv_dup.parse('', quiet=True), {})
+
+    def test_kv_dup_duplicate_keys(self):
+        """
+        Test input that contains duplicate keys
+        """
+        data = '''
+duplicate_key: value1
+another_key = foo
+duplicate_key = value2
+'''
+        expected = {"duplicate_key":["value1","value2"],"another_key":["foo"]}
+        self.assertEqual(jc.parsers.kv_dup.parse(data, quiet=True), expected)
+
+    def test_kv_dup_null_values(self):
+        """
+        Test input that contains duplicate keys and null values
+        """
+        data = '''
+normal_key: "hello world"
+no_val
+some_vals = 1
+some_vals
+some_vals:3
+'''
+        expected = {"normal_key":["hello world"],"no_val":[""],"some_vals":["1","","3"]}
+        self.assertEqual(jc.parsers.kv_dup.parse(data, quiet=True), expected)
+
+
+if __name__ == '__main__':
+    unittest.main()