test: migrated test_requirement to use unittest

Signed-off-by: Paul Horton <[email protected]>

tests/test_requirement.py

@@ -1,39 +1,56 @@
-from nose.tools import assert_equal, assert_not_equal
+# encoding: utf-8
+
+# This file is part of requirements-parser library.
+#
+# 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.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+from unittest import TestCase
 
 from requirements.requirement import Requirement
 
 
-def get_reqs(requirement_1, requirement_2):
-    return (Requirement.parse(requirement_1),
-            Requirement.parse(requirement_2))
+class TestRequirement(TestCase):
 
+    @staticmethod
+    def get_reqs(requirement_1, requirement_2):
+        return (Requirement.parse(requirement_1),
+                Requirement.parse(requirement_2))
 
-def test_simple_equality():
-    assert_equal(*get_reqs("pylib==1.0.0", "pylib==1.0.0"))
+    def test_simple_equality(self):
+        self.assertEqual(*TestRequirement.get_reqs("pylib==1.0.0", "pylib==1.0.0"))
 
+    def test_equality_no_specifiers(self):
+        self.assertEqual(*TestRequirement.get_reqs("pylib", "pylib"))
 
-def test_equality_no_specifiers():
-    assert_equal(*get_reqs("pylib", "pylib"))
+    def test_simple_inequality(self):
+        self.assertNotEqual(*TestRequirement.get_reqs("pylib==1.0.0", "pylib==1.0.1"))
 
+    def test_spec_order_equality(self):
+        """
+        The same specifications, in a different order, are still equal
+        """
+        self.assertEqual(*TestRequirement.get_reqs("pylib>=1.0,<2.0", "pylib<2.0,>=1.0"))
 
-def test_simple_inequality():
-    assert_not_equal(*get_reqs("pylib==1.0.0", "pylib==1.0.1"))
+    def test_vcs_equality(self):
+        self.assertEqual(*TestRequirement.get_reqs(
+            "-e git://git.example.com/MyProject.git@da39a3ee#egg=MyProject",
+            "-e git://git.example.com/MyProject.git@da39a3ee#egg=MyProject"
+        ))
 
-
-def test_spec_order_equality():
-    """
-    The same specifications, in a different order, are still equal
-    """
-    assert_equal(*get_reqs("pylib>=1.0,<2.0", "pylib<2.0,>=1.0"))
-
-
-def test_vcs_equality():
-    assert_equal(*get_reqs(
-        "-e git://git.example.com/MyProject.git@da39a3ee#egg=MyProject",
-        "-e git://git.example.com/MyProject.git@da39a3ee#egg=MyProject"))
-
-
-def test_vcs_hash_inequality():
-    assert_not_equal(*get_reqs(
-        "-e git://git.example.com/MyProject.git@123#egg=MyProject",
-        "-e git://git.example.com/MyProject.git@abc#egg=MyProject"))
+    def test_vcs_hash_inequality(self):
+        self.assertNotEqual(*TestRequirement.get_reqs(
+            "-e git://git.example.com/MyProject.git@123#egg=MyProject",
+            "-e git://git.example.com/MyProject.git@abc#egg=MyProject"
+        ))