improvements to lambda wrapper [#13]

lambda/tippecanoe_test.py

@@ -0,0 +1,26 @@
+from tippecanoe import split_key
+import unittest
+
+class TestTippecanoe(unittest.TestCase):
+    def test_basic(self):
+        root, ext = split_key("file.json")
+        self.assertEqual(root,"file")
+        self.assertEqual(ext,".json")
+
+    def test_basic_gz(self):
+        root, ext = split_key("file.csv.gz")
+        self.assertEqual(root,"file")
+        self.assertEqual(ext,".csv.gz")
+
+    def test_nested_key(self):
+        root, ext = split_key("dir/file.fgb")
+        self.assertEqual(root,"dir/file")
+        self.assertEqual(ext,".fgb")
+
+    def test_nested_key_gz(self):
+        root, ext = split_key("dir/file.geojsonseq.gz")
+        self.assertEqual(root,"dir/file")
+        self.assertEqual(ext,".geojsonseq.gz")
+
+if __name__ == '__main__':
+    unittest.main()