add a couple tests

tools/azure-sdk-tools/ci_tools/functions.py

@@ -735,7 +735,7 @@ def handle_incompatible_minimum_dev_reqs(
     This function is used to handle the case where a dev requirement is incompatible with the current set of packages
     being installed. This is used to update or remove dev_requirements that are incompatible with a targeted set of packages.
 
-    :param str setup_path: The path to the setup.py file whos dev_requirements are being filtered.
+    :param str setup_path: The path to the setup.py file whose dev_requirements are being filtered.
 
     :param List[str] filtered_requirement_list: A filtered copy of the dev_requirements.txt for the targeted package. This list will be
     modified in place to remove any requirements incompatible with the packages_for_install.

tools/azure-sdk-tools/tests/test_conflict_resolution.py

@@ -1,11 +1,27 @@
-import os
+import pytest
 
 from unittest.mock import patch
-
 from tempfile import TemporaryDirectory
-
 from ci_tools.functions import resolve_compatible_package, is_package_compatible
+from typing import Optional, List
+from packaging.version import Version
+from pkg_resources import Requirement
 
 
+@pytest.mark.parametrize(
+    "input_requirements, immutable_requirements, expected_result",
+    [([Requirement("sphinx==1.0.0")], [Requirement("sphinx>=1.0.0")], True),
+     ([Requirement("sphinx==1.0.0")], [Requirement("sphinx>=1.1.0")], False)],
+)
+def test_incompatible_specifier(fake_package_input_requirements, immutable_requirements, expected_result):
+    result = is_package_compatible("fake-package", fake_package_input_requirements, immutable_requirements)
+    assert result == expected_result
 
 
+def test_identity_resolution():
+    result = resolve_compatible_package(
+        "azure-identity",
+        "1.18.1",
+        [Requirement("azure-core>=1.28.0"), Requirement("isodate>=0.6.1"), Requirement("typing-extensions>=4.0.1")],
+    )
+    assert result == "azure-identity==1.16.0"