mtest: create separate runners for multiple repeats

Reusing the runners for multiple repeats of the test run gets in the
way of the progress report, which stores runners in an OrderedSet.
Instead, create a separate SingleTestRunner object for each repeat.

While at it, fix the "duplicate suite" assertion as it can fire
with TAP tests and --repeat=N.

Fixes: #8405

1 files changed, 6 insertions, 0 deletions

diff --git a/run_unittests.py b/run_unittests.py
index acd775c..53642ca 100755
--- a/run_unittests.py
+++ b/run_unittests.py
@@ -2524,6 +2524,12 @@ class AllPlatformTests(BasePlatformTests):
         self.assertNotRegex(out, r'WARNING: Overriding.*TEST_VAR_SET')
         self.run_tests()
 
+    def test_testrepeat(self):
+        testdir = os.path.join(self.common_test_dir, '207 tap tests')
+        self.init(testdir)
+        self.build()
+        self._run(self.mtest_command + ['--repeat=2'])
+
     def test_testsetups(self):
         if not shutil.which('valgrind'):
             raise unittest.SkipTest('Valgrind not installed.')