Add a unit test

src/azure-cli/azure/cli/command_modules/resource/tests/latest/test_resource_bicep.py

@@ -0,0 +1,43 @@
+import unittest
+import mock
+
+from azure.cli.command_modules.resource._bicep import ensure_bicep_installation
+
+
+class TestBicep(unittest.TestCase):
+    @mock.patch("os.path.isfile")
+    @mock.patch("azure.cli.command_modules.resource._bicep.get_bicep_latest_release_tag")
+    @mock.patch("azure.cli.command_modules.resource._bicep._get_bicep_installed_version")
+    @mock.patch("azure.cli.command_modules.resource._bicep._logger.warning")
+    def test_ensure_bicep_installation_check_upgrade(
+        self, warning_mock, _get_bicep_installed_version_stub, get_bicep_latest_release_tag_stub, isfile_stub
+    ):
+        # Arrange.
+        _get_bicep_installed_version_stub.return_value = "1.0.0"
+        get_bicep_latest_release_tag_stub.return_value = "v2.0.0"
+        isfile_stub.return_value = True
+
+        # Act.
+        ensure_bicep_installation(check_upgrade=True)
+
+        # Assert.
+        warning_mock.assert_called_once_with(
+            'A new Bicep release is available: %s. Upgrade now by running "az bicep upgrade".',
+            "v2.0.0",
+        )
+
+
+# This method will be used by the mock to replace requests.get
+def mocked_requests_get(*args, **kwargs):
+    class MockResponse:
+        def __init__(self, json_data, status_code):
+            self.json_data = json_data
+            self.status_code = status_code
+
+        def json(self):
+            return self.json_data
+
+    if args[0] == "https://api.github.com/repos/Azure/bicep/releases/latest":
+        return MockResponse({"tag_name": "v2.0.0"}, 200)
+
+    return MockResponse(None, 404)