test

Author: lzchen

Diff for: opentelemetry-api/tests/trace/propagation/test_textmap.py

@@ -0,0 +1,42 @@
+# Copyright The OpenTelemetry Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import unittest
+
+from opentelemetry.trace.propagation.textmap import DictGetter
+
+
+class TestDictGetter(unittest.TestCase):
+    def test_get_none(self):
+        getter = DictGetter()
+        carrier = {}
+        val = getter.get(carrier, "test")
+        self.assertIsNone(val)
+
+    def test_get_str(self):
+        getter = DictGetter()
+        carrier = {"test":"val"}
+        val = getter.get(carrier, "test")
+        self.assertEqual(val, ["val"])
+
+    def test_get_iter(self):
+        getter = DictGetter()
+        carrier = {"test":["val"]}
+        val = getter.get(carrier, "test")
+        self.assertEqual(val, ["val"])
+
+    def test_keys(self):
+        getter = DictGetter()
+        keys = getter.keys({"test":"val"})
+        self.assertEqual(keys, ["test"])