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_ses/__init__.py

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

tests/test_ses/test_ses_boto3.py

@@ -4,7 +4,7 @@ import boto3
 from botocore.exceptions import ClientError
 from six.moves.email_mime_multipart import MIMEMultipart
 from six.moves.email_mime_text import MIMEText
-from nose.tools import assert_raises
+import pytest
 
 
 import sure  # noqa
@@ -298,7 +298,7 @@ def test_create_configuration_set():
         },
     )
 
-    with assert_raises(ClientError) as ex:
+    with pytest.raises(ClientError) as ex:
         conn.create_configuration_set_event_destination(
             ConfigurationSetName="failtest",
             EventDestination={
@@ -313,7 +313,7 @@ def test_create_configuration_set():
 
     ex.exception.response["Error"]["Code"].should.equal("ConfigurationSetDoesNotExist")
 
-    with assert_raises(ClientError) as ex:
+    with pytest.raises(ClientError) as ex:
         conn.create_configuration_set_event_destination(
             ConfigurationSetName="test",
             EventDestination={
@@ -336,7 +336,7 @@ def test_create_receipt_rule_set():
 
     result["ResponseMetadata"]["HTTPStatusCode"].should.equal(200)
 
-    with assert_raises(ClientError) as ex:
+    with pytest.raises(ClientError) as ex:
         conn.create_receipt_rule_set(RuleSetName="testRuleSet")
 
     ex.exception.response["Error"]["Code"].should.equal("RuleSetNameAlreadyExists")
@@ -378,7 +378,7 @@ def test_create_receipt_rule():
 
     result["ResponseMetadata"]["HTTPStatusCode"].should.equal(200)
 
-    with assert_raises(ClientError) as ex:
+    with pytest.raises(ClientError) as ex:
         conn.create_receipt_rule(
             RuleSetName=rule_set_name,
             Rule={
@@ -409,7 +409,7 @@ def test_create_receipt_rule():
 
     ex.exception.response["Error"]["Code"].should.equal("RuleAlreadyExists")
 
-    with assert_raises(ClientError) as ex:
+    with pytest.raises(ClientError) as ex:
         conn.create_receipt_rule(
             RuleSetName="InvalidRuleSetaName",
             Rule={
@@ -455,7 +455,7 @@ def test_create_ses_template():
             "</h1><p>Your favorite animal is {{favoriteanimal}}.</p>",
         }
     )
-    with assert_raises(ClientError) as ex:
+    with pytest.raises(ClientError) as ex:
         conn.create_template(
             Template={
                 "TemplateName": "MyTemplate",
@@ -475,7 +475,7 @@ def test_create_ses_template():
     result["Template"]["SubjectPart"].should.equal("Greetings, {{name}}!")
 
     # get a template which is not present
-    with assert_raises(ClientError) as ex:
+    with pytest.raises(ClientError) as ex:
         conn.get_template(TemplateName="MyFakeTemplate")
 
     ex.exception.response["Error"]["Code"].should.equal("TemplateDoesNotExist")

tests/test_ses/test_ses_sns_boto3.py

@@ -7,7 +7,6 @@ from six.moves.email_mime_multipart import MIMEMultipart
 from six.moves.email_mime_text import MIMEText
 
 import sure  # noqa
-from nose import tools
 from moto import mock_ses, mock_sns, mock_sqs
 from moto.ses.models import SESFeedback
 from moto.core import ACCOUNT_ID