Port test suite from nose to pytest.

This just eliminates all errors on the tests collection. Elimination of
failures is left to the next commit.

tests/test_sqs/__init__.py

@@ -0,0 +1 @@
+# This file is intentionally left blank.

tests/test_sqs/test_sqs.py

@@ -11,14 +11,13 @@ import boto3
 import botocore.exceptions
 import six
 import sure  # noqa
-import tests.backport_assert_raises  # noqa
 from boto.exception import SQSError
 from boto.sqs.message import Message, RawMessage
 from botocore.exceptions import ClientError
 from freezegun import freeze_time
 from moto import mock_sqs, mock_sqs_deprecated, mock_lambda, mock_logs, settings
-from nose import SkipTest
-from nose.tools import assert_raises
+from unittest import SkipTest
+import pytest
 from tests.helpers import requires_boto_gte
 from tests.test_awslambda.test_lambda import get_test_zip_file1, get_role_name
 from moto.core import ACCOUNT_ID
@@ -220,7 +219,7 @@ def test_get_queue_url_errors():
 @mock_sqs
 def test_get_nonexistent_queue():
     sqs = boto3.resource("sqs", region_name="us-east-1")
-    with assert_raises(ClientError) as err:
+    with pytest.raises(ClientError) as err:
         sqs.get_queue_by_name(QueueName="non-existing-queue")
     ex = err.exception
     ex.operation_name.should.equal("GetQueueUrl")
@@ -229,7 +228,7 @@ def test_get_nonexistent_queue():
         "The specified queue non-existing-queue does not exist for this wsdl version."
     )
 
-    with assert_raises(ClientError) as err:
+    with pytest.raises(ClientError) as err:
         sqs.Queue("http://whatever-incorrect-queue-address").load()
     ex = err.exception
     ex.operation_name.should.equal("GetQueueAttributes")
@@ -368,7 +367,7 @@ def test_message_with_attributes_invalid_datatype():
     sqs = boto3.resource("sqs", region_name="us-east-1")
     queue = sqs.create_queue(QueueName="blah")
 
-    with assert_raises(ClientError) as e:
+    with pytest.raises(ClientError) as e:
         queue.send_message(
             MessageBody="derp",
             MessageAttributes={
@@ -491,7 +490,7 @@ def test_delete_queue():
     queue.delete()
     conn.list_queues().get("QueueUrls").should.equal(None)
 
-    with assert_raises(botocore.exceptions.ClientError):
+    with pytest.raises(botocore.exceptions.ClientError):
         queue.delete()
 
 
@@ -758,10 +757,10 @@ def test_max_number_of_messages_invalid_param():
     sqs = boto3.resource("sqs", region_name="us-east-1")
     queue = sqs.create_queue(QueueName="test-queue")
 
-    with assert_raises(ClientError):
+    with pytest.raises(ClientError):
         queue.receive_messages(MaxNumberOfMessages=11)
 
-    with assert_raises(ClientError):
+    with pytest.raises(ClientError):
         queue.receive_messages(MaxNumberOfMessages=0)
 
     # no error but also no messages returned
@@ -773,10 +772,10 @@ def test_wait_time_seconds_invalid_param():
     sqs = boto3.resource("sqs", region_name="us-east-1")
     queue = sqs.create_queue(QueueName="test-queue")
 
-    with assert_raises(ClientError):
+    with pytest.raises(ClientError):
         queue.receive_messages(WaitTimeSeconds=-1)
 
-    with assert_raises(ClientError):
+    with pytest.raises(ClientError):
         queue.receive_messages(WaitTimeSeconds=21)
 
     # no error but also no messages returned
@@ -1652,7 +1651,7 @@ def test_add_permission_errors():
         Actions=["ReceiveMessage"],
     )
 
-    with assert_raises(ClientError) as e:
+    with pytest.raises(ClientError) as e:
         client.add_permission(
             QueueUrl=queue_url,
             Label="test",
@@ -1667,7 +1666,7 @@ def test_add_permission_errors():
         "Value test for parameter Label is invalid. " "Reason: Already exists."
     )
 
-    with assert_raises(ClientError) as e:
+    with pytest.raises(ClientError) as e:
         client.add_permission(
             QueueUrl=queue_url,
             Label="test-2",
@@ -1683,7 +1682,7 @@ def test_add_permission_errors():
         "Reason: Only the queue owner is allowed to invoke this action."
     )
 
-    with assert_raises(ClientError) as e:
+    with pytest.raises(ClientError) as e:
         client.add_permission(
             QueueUrl=queue_url,
             Label="test-2",
@@ -1698,7 +1697,7 @@ def test_add_permission_errors():
         "The request must contain the parameter Actions."
     )
 
-    with assert_raises(ClientError) as e:
+    with pytest.raises(ClientError) as e:
         client.add_permission(
             QueueUrl=queue_url,
             Label="test-2",
@@ -1713,7 +1712,7 @@ def test_add_permission_errors():
         "Value [] for parameter PrincipalId is invalid. Reason: Unable to verify."
     )
 
-    with assert_raises(ClientError) as e:
+    with pytest.raises(ClientError) as e:
         client.add_permission(
             QueueUrl=queue_url,
             Label="test-2",
@@ -1744,7 +1743,7 @@ def test_remove_permission_errors():
     response = client.create_queue(QueueName="test-queue")
     queue_url = response["QueueUrl"]
 
-    with assert_raises(ClientError) as e:
+    with pytest.raises(ClientError) as e:
         client.remove_permission(QueueUrl=queue_url, Label="test")
     ex = e.exception
     ex.operation_name.should.equal("RemovePermission")
@@ -1876,7 +1875,7 @@ def test_create_fifo_queue_with_dlq():
     )
 
     # Cant have fifo queue with non fifo DLQ
-    with assert_raises(ClientError):
+    with pytest.raises(ClientError):
         sqs.create_queue(
             QueueName="test-queue2.fifo",
             Attributes={
@@ -1970,7 +1969,7 @@ def test_redrive_policy_available():
     assert json.loads(attributes["RedrivePolicy"]) == redrive_policy
 
     # Cant have redrive policy without maxReceiveCount
-    with assert_raises(ClientError):
+    with pytest.raises(ClientError):
         sqs.create_queue(
             QueueName="test-queue2",
             Attributes={
@@ -1988,7 +1987,7 @@ def test_redrive_policy_non_existent_queue():
         "maxReceiveCount": 1,
     }
 
-    with assert_raises(ClientError):
+    with pytest.raises(ClientError):
         sqs.create_queue(
             QueueName="test-queue",
             Attributes={"RedrivePolicy": json.dumps(redrive_policy)},
@@ -2173,7 +2172,7 @@ def test_send_messages_to_fifo_without_message_group_id():
         Attributes={"FifoQueue": "true", "ContentBasedDeduplication": "true"},
     )
 
-    with assert_raises(Exception) as e:
+    with pytest.raises(Exception) as e:
         queue.send_message(MessageBody="message-1")
     ex = e.exception
     ex.response["Error"]["Code"].should.equal("MissingParameter")