Add basic SNS support.

tests/test_sns/test_subscriptions.py

@@ -0,0 +1,49 @@
+import boto
+
+import sure  # noqa
+
+from moto import mock_sns
+
+
+@mock_sns
+def test_creating_subscription():
+    conn = boto.connect_sns()
+    conn.create_topic("some-topic")
+    topics_json = conn.get_all_topics()
+    topic_arn = topics_json["ListTopicsResponse"]["ListTopicsResult"]["Topics"][0]['TopicArn']
+
+    conn.subscribe(topic_arn, "http", "http://example.com/")
+
+    subscriptions = conn.get_all_subscriptions()["ListSubscriptionsResponse"]["ListSubscriptionsResult"]["Subscriptions"]
+    subscriptions.should.have.length_of(1)
+    subscription = subscriptions[0]
+    subscription["TopicArn"].should.equal(topic_arn)
+    subscription["Protocol"].should.equal("http")
+    subscription["SubscriptionArn"].should.contain(topic_arn)
+    subscription["Endpoint"].should.equal("http://example.com/")
+
+    # Now unsubscribe the subscription
+    conn.unsubscribe(subscription["SubscriptionArn"])
+
+    # And there should be zero subscriptions left
+    subscriptions = conn.get_all_subscriptions()["ListSubscriptionsResponse"]["ListSubscriptionsResult"]["Subscriptions"]
+    subscriptions.should.have.length_of(0)
+
+
+@mock_sns
+def test_getting_subscriptions_by_topic():
+    conn = boto.connect_sns()
+    conn.create_topic("topic1")
+    conn.create_topic("topic2")
+
+    topics_json = conn.get_all_topics()
+    topics = topics_json["ListTopicsResponse"]["ListTopicsResult"]["Topics"]
+    topic1_arn = topics[0]['TopicArn']
+    topic2_arn = topics[1]['TopicArn']
+
+    conn.subscribe(topic1_arn, "http", "http://example1.com/")
+    conn.subscribe(topic2_arn, "http", "http://example2.com/")
+
+    topic1_subscriptions = conn.get_all_subscriptions_by_topic(topic1_arn)["ListSubscriptionsByTopicResponse"]["ListSubscriptionsByTopicResult"]["Subscriptions"]
+    topic1_subscriptions.should.have.length_of(1)
+    topic1_subscriptions[0]['Endpoint'].should.equal("http://example1.com/")