hooks: fix unittests in CQ

Mock out the find_repo_root API using the existing helper.

Bug: None
Test: `./rh/hooks_unittest.py` passes in CQ
Change-Id: Ie1df1e31ae93ac927883b1a63ff62716ce09d778
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repohooks/+/564901
Commit-Queue: Mike Frysinger <vapier@google.com>
Reviewed-by: Raul Rangel <rrangel@google.com>
Tested-by: Mike Frysinger <vapier@google.com>

rh/hooks_unittest.py

diff --git a/rh/hooks_unittest.py b/rh/hooks_unittest.py
index 382911e..c382700 100755
--- a/rh/hooks_unittest.py
+++ b/rh/hooks_unittest.py
@@ -20,8 +20,6 @@
 import unittest
 from unittest import mock
 
-import pytest
-
 _path = os.path.realpath(__file__ + "/../..")
 if sys.path[0] != _path:
     sys.path.insert(0, _path)
@@ -266,9 +264,11 @@
 class HookOptionsTests(unittest.TestCase):
     """Verify behavior of HookOptions object."""
 
-    @pytest.mark.skip_cq("TODO: Relies on .repo dir")
+    @mock.patch.object(
+        rh.git, "find_repo_root", side_effect=mock_find_repo_root
+    )
     @mock.patch.object(rh.hooks, "_get_build_os_name", return_value="vapier os")
-    def testExpandVars(self, m):
+    def testExpandVars(self, m, _m):
         """Verify expand_vars behavior."""
         # Simple pass through.
         args = ["who", "goes", "there ?"]
@@ -279,8 +279,10 @@
         exp_args = ["who", "goes", "there ?", f"{m.return_value} is great"]
         self.assertEqual(exp_args, rh.hooks.HookOptions.expand_vars(args))
 
-    @pytest.mark.skip_cq("TODO: Relies on .repo dir")
-    def testArgs(self):
+    @mock.patch.object(
+        rh.git, "find_repo_root", side_effect=mock_find_repo_root
+    )
+    def testArgs(self, _m):
         """Verify args behavior."""
         # Verify initial args to __init__ has higher precedent.
         args = ["start", "args"]
@@ -294,8 +296,10 @@
         self.assertEqual(options.args(), [])
         self.assertEqual(options.args(default_args=args), args)
 
-    @pytest.mark.skip_cq("TODO: Relies on .repo dir")
-    def testToolPath(self):
+    @mock.patch.object(
+        rh.git, "find_repo_root", side_effect=mock_find_repo_root
+    )
+    def testToolPath(self, _):
         """Verify tool_path behavior."""
         options = rh.hooks.HookOptions(
             "hook name",