Merge pull request #101 from launchdarkly/eb/ch34481/pyyaml-py3.3

don't load test dependencies in Python 3.3 that don't work in Python 3.3

.circleci/config.yml

@@ -17,6 +17,9 @@ test-template: &test-template
         command: |
           sudo pip install --upgrade pip virtualenv;
           sudo pip install -r test-requirements.txt;
+          if [[ "$CIRCLE_JOB" != "test-3.3" ]]; then
+            sudo pip install -r test-filesource-optional-requirements.txt;
+          fi;
           if [[ "$CIRCLE_JOB" != "test-3.3" ]] && [[ "$CIRCLE_JOB" != "test-3.4" ]]; then
             sudo pip install -r consul-requirements.txt;
           fi;

test-filesource-optional-requirements.txt

@@ -0,0 +1,2 @@
+pyyaml>=3.0
+watchdog>=0.9

test-requirements.txt

@@ -7,5 +7,3 @@ jsonpickle==0.9.3
 pytest-capturelog>=0.7
 pytest-cov>=2.4.0
 codeclimate-test-reporter>=0.2.1
-pyyaml>=3.0
-watchdog>=0.9

testing/test_file_data_source.py

@@ -12,6 +12,13 @@
 from ldclient.integrations import Files
 from ldclient.versioned_data_kind import FEATURES, SEGMENTS
 
+have_yaml = False
+try:
+    import yaml
+    have_yaml = True
+except ImportError:
+    pass
+
 
 all_flag_keys = [ 'flag1', 'flag2' ]
 all_properties_json = '''
@@ -128,6 +135,8 @@ def test_loads_flags_on_start_from_json():
         os.remove(path)
 
 def test_loads_flags_on_start_from_yaml():
+    if not have_yaml:
+        pytest.skip("skipping file source test with YAML because pyyaml isn't available")
     path = make_temp_file(all_properties_yaml)
     try:
         source = make_data_source(paths = path)