oeqa/core: Rework OETestTag and remove unused OETestFilter

Rework OETestTag so that it does not rely on the existing decorator code
base and instead inserts the tags into an attribute on the decorated
target (e.g. class/type or method). This allows the use of OETestTag on
classes and method.

In order to filter tagged tests rework the loaders filtering code,
removing the generic-ness (with validation and attributes/etc.) and
replace it with a "tags_filter" parameter which is a function that
filters a test based on the tags it has. This allows the loader user to
filter on tags in more specific ways (e.g. include all untagged tests
and any tests tagged with foo). Plumb all this through the context code
and testing code.

Update the associated tests to pass correctly with the changes.

(From OE-Core rev: b8a4a4c2de68110d74607cb9807c9e741ca9441c)

Signed-off-by: Nathan Rossi <nathan@nathanrossi.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/core/loader.py

@@ -16,7 +16,7 @@ from oeqa.core.utils.test import getSuiteModules, getCaseID
 from oeqa.core.exception import OEQATestNotFound
 from oeqa.core.case import OETestCase
 from oeqa.core.decorator import decoratorClasses, OETestDecorator, \
-        OETestFilter, OETestDiscover
+        OETestDiscover
 
 # When loading tests, the unittest framework stores any exceptions and
 # displays them only when the run method is called.
@@ -68,7 +68,7 @@ class OETestLoader(unittest.TestLoader):
             '_top_level_dir']
 
     def __init__(self, tc, module_paths, modules, tests, modules_required,
-            filters, *args, **kwargs):
+            *args, **kwargs):
         self.tc = tc
 
         self.modules = _built_modules_dict(modules)
@@ -76,13 +76,7 @@ class OETestLoader(unittest.TestLoader):
         self.tests = tests
         self.modules_required = modules_required
 
-        self.filters = filters
-        self.decorator_filters = [d for d in decoratorClasses if \
-                issubclass(d, OETestFilter)]
-        self._validateFilters(self.filters, self.decorator_filters)
-        self.used_filters = [d for d in self.decorator_filters
-                             for f in self.filters
-                             if f in d.attrs]
+        self.tags_filter = kwargs.get("tags_filter", None)
 
         if isinstance(module_paths, str):
             module_paths = [module_paths]
@@ -104,28 +98,6 @@ class OETestLoader(unittest.TestLoader):
         setattr(testCaseClass, 'td', self.tc.td)
         setattr(testCaseClass, 'logger', self.tc.logger)
 
-    def _validateFilters(self, filters, decorator_filters):
-        # Validate if filter isn't empty
-        for key,value in filters.items():
-            if not value:
-                raise TypeError("Filter %s specified is empty" % key)
-
-        # Validate unique attributes
-        attr_filters = [attr for clss in decorator_filters \
-                                for attr in clss.attrs]
-        dup_attr = [attr for attr in attr_filters
-                    if attr_filters.count(attr) > 1]
-        if dup_attr:
-            raise TypeError('Detected duplicated attribute(s) %s in filter'
-                            ' decorators' % ' ,'.join(dup_attr))
-
-        # Validate if filter is supported
-        for f in filters:
-            if f not in attr_filters:
-                classes = ', '.join([d.__name__ for d in decorator_filters])
-                raise TypeError('Found "%s" filter but not declared in any of '
-                                '%s decorators' % (f, classes))
-
     def _registerTestCase(self, case):
         case_id = case.id()
         self.tc._registry['cases'][case_id] = case
@@ -188,19 +160,20 @@ class OETestLoader(unittest.TestLoader):
                         return True
 
         # Decorator filters
-        if self.filters and isinstance(case, OETestCase):
-            filters = self.filters.copy()
-            case_decorators = [cd for cd in case.decorators
-                               if cd.__class__ in self.used_filters]
+        if self.tags_filter is not None and callable(self.tags_filter):
+            alltags = set()
+            # pull tags from the case class
+            if hasattr(case, "__oeqa_testtags"):
+                for t in getattr(case, "__oeqa_testtags"):
+                    alltags.add(t)
+            # pull tags from the method itself
+            if hasattr(case, test_name):
+                method = getattr(case, test_name)
+                if hasattr(method, "__oeqa_testtags"):
+                    for t in getattr(method, "__oeqa_testtags"):
+                        alltags.add(t)
 
-            # Iterate over case decorators to check if needs to be filtered.
-            for cd in case_decorators:
-                if cd.filtrate(filters):
-                    return True
-
-            # Case is missing one or more decorators for all the filters
-            # being used, so filter test case.
-            if filters:
+            if self.tags_filter(alltags):
                 return True
 
         return False