Added integration test for match on 'method'

tests/integration/test_matchers.py

@@ -0,0 +1,24 @@
+import vcr
+import pytest
+from six.moves.urllib.request import urlopen
+
+
+@pytest.fixture
+def cassette(tmpdir):
+    return str(tmpdir.join('test.yml'))
+
+
+def test_method_matcher(cassette):
+    # prepare cassete
+    with vcr.use_cassette(cassette, match_on=['method']) as cass:
+        urlopen('http://httpbin.org/')
+        assert len(cass) == 1
+
+    # play cassette with matching on method
+    with vcr.use_cassette(cassette, match_on=['method']) as cass:
+        urlopen('http://httpbin.org/get')
+        assert cass.play_count == 1
+
+    with pytest.raises(vcr.errors.CannotOverwriteExistingCassetteException):
+        with vcr.use_cassette(cassette, match_on=['method']) as cass:
+            urlopen('http://httpbin.org/post', data='')