[lldb][test] Handle .categories lookup for inline tests.

[rupprecht]

Summary

When creating a test with lldbinline.MakeInlineTest(), the reported inspect.getfile(test.__class__) is lldbtest.pyc, meaning any .categories file will be ineffective for those tests. Check for the test_filename first, which inline tests will set.

Additionally, raise an error with the starting dir if .categories is not found. This makes the problem more obvious when it occurs: when the test is separated from the test framework tree.

[merge_guards_bot]

Build result: pass - 60539 tests passed, 0 failed and 726 were skipped.

Log files: console-log.txt, CMakeCache.txt

lldb/packages/Python/lldbsuite/test/test_result.py

def _getFileBasedCategories(test):
         """
         Returns the list of categories to which this test case belongs by
         looking for a ".categories" file. We start at the folder the test is in
         an traverse the hierarchy upwards - we guarantee a .categories to exist
         at the top level directory so we do not end up looping endlessly.
         """
         import inspect
         import os.path
-        folder = inspect.getfile(test.__class__)
-        folder = os.path.dirname(folder)
+        # Use test.test_filename if the test was created with
+        # lldbinline.MakeInlineTest().
+        if hasattr(test, 'test_filename'):
+            start_path = test.test_filename
+        else:
+            start_path = inspect.getfile(test.__class__)
+
+        folder = os.path.dirname(start_path)
         while folder != '/':
             categories_file_name = os.path.join(folder, ".categories")
             if os.path.exists(categories_file_name):
                 categories_file = open(categories_file_name, 'r')
                 categories = categories_file.readline()
                 categories_file.close()
                 categories = str.replace(categories, '\n', '')
                 categories = str.replace(categories, '\r', '')
                 return categories.split(',')
             else:
                 folder = os.path.dirname(folder)
                 continue
+        raise Exception("Did not find a .categories file, starting at: %s" % start_path)
 
 
     def getCategoriesForTest(self, test):
         """
         Gets all the categories for the currently running test method in test case
         """
         test_categories = []
         test_method = getattr(test, test._testMethodName)