Delete leftover files from some tests.

run_project_tests.py

@@ -1306,6 +1306,14 @@ def print_tool_versions():
         print('{0:<{2}}: {1}'.format(tool['tool'], get_version(tool), max_width))
     print()
 
+def clear_transitive_files():
+    a = Path('test cases/common')
+    for d in a.glob('*subproject subdir/subprojects/subsubsub*'):
+        if d.is_dir():
+            mesonlib.windows_proof_rmtree(d)
+        else:
+            mesonlib.windows_proof_rm(str(d))
+
 if __name__ == '__main__':
     parser = argparse.ArgumentParser(description="Run the test suite of Meson.")
     parser.add_argument('extra_args', nargs='*',
@@ -1326,6 +1334,8 @@ if __name__ == '__main__':
     if options.native_file:
         options.extra_args += ['--native-file', options.native_file]
 
+    clear_transitive_files()
+
     print('Meson build system', meson_version, 'Project Tests')
     print('Using python', sys.version.split('\n')[0])
     setup_commands(options.backend)
@@ -1357,4 +1367,5 @@ if __name__ == '__main__':
             tests = list(g)
             if len(tests) != 1:
                 print('WARNING: The {} suite contains duplicate "{}" tests: "{}"'.format(name, k, '", "'.join(tests)))
+    clear_transitive_files()
     raise SystemExit(failing_tests)

run_unittests.py

@@ -56,8 +56,8 @@ from mesonbuild.ast import AstInterpreter
 from mesonbuild.mesonlib import (
     BuildDirLock, LibType, MachineChoice, PerMachine, Version, is_windows,
     is_osx, is_cygwin, is_dragonflybsd, is_openbsd, is_haiku, is_sunos,
-    windows_proof_rmtree, python_command, version_compare, split_args,
-    quote_arg, relpath, is_linux, git
+    windows_proof_rmtree, windows_proof_rm, python_command,
+    version_compare, split_args, quote_arg, relpath, is_linux, git
 )
 from mesonbuild.environment import detect_ninja
 from mesonbuild.mesonlib import MesonException, EnvironmentException, OptionKey
@@ -5805,12 +5805,16 @@ class FailureTests(BasePlatformTests):
            contain required keys.
         '''
         tdir = os.path.join(self.unit_test_dir, '20 subproj dep variables')
+        stray_file = os.path.join(tdir, 'subprojects/subsubproject.wrap')
+        if os.path.exists(stray_file):
+            windows_proof_rm(stray_file)
         out = self.init(tdir, inprocess=True)
         self.assertRegex(out, r"Neither a subproject directory nor a .*nosubproj.wrap.* file was found")
         self.assertRegex(out, r'Function does not take positional arguments.')
         self.assertRegex(out, r'Dependency .*somenotfounddep.* from subproject .*subprojects/somesubproj.* found: .*NO.*')
         self.assertRegex(out, r'Dependency .*zlibproxy.* from subproject .*subprojects.*somesubproj.* found: .*YES.*')
         self.assertRegex(out, r'Missing key .*source_filename.* in subsubproject.wrap')
+        windows_proof_rm(stray_file)
 
     def test_exception_exit_status(self):
         '''