Add is_fixture function

Author: jjotero

reframe/core/fixtures.py

@@ -288,7 +288,8 @@ def instantiate_all(self):
 
                 try:
                     # Instantiate the fixture
-                    inst = cls(variant_num=varnum, variables=fixtvars)
+                    inst = cls(variant_num=varnum, variables=fixtvars,
+                               is_fixture=True)
                 except Exception:
                     exc_info = sys.exc_info()
                     getlogger().warning(

reframe/core/meta.py

@@ -487,6 +487,9 @@ def __call__(cls, *args, **kwargs):
         if not isinstance(variables, collections.abc.Mapping):
             raise TypeError("'variables' argument must be a mapping")
 
+        # Intercept is_fixture argument to flag an instance as a fixture
+        is_fixture = kwargs.pop('is_fixture', False)
+
         obj = cls.__new__(cls, *args, **kwargs)
 
         # Insert the var and param spaces
@@ -499,6 +502,10 @@ def __call__(cls, *args, **kwargs):
             obj._rfm_param_variant = param_index
             obj._rfm_fixt_variant = fixt_index
 
+        # Flag the instance as fixture
+        if is_fixture:
+            obj._rfm_is_fixture = True
+
         # Set the variables passed to the constructor
         for k, v in variables.items():
             if k in cls.var_space:

reframe/core/pipeline.py

@@ -1243,6 +1243,10 @@ def is_local(self):
 
         return self.local or self._current_partition.scheduler.is_local
 
+    def is_fixture(self):
+        '''Check if the test is a fixture.'''
+        return getattr(self, '_rfm_is_fixture', False)
+
     def _resolve_fixtures(self):
         '''Resolve the fixture dependencies and inject the fixture handle.
 

reframe/frontend/cli.py

@@ -116,7 +116,10 @@ def list_checks(testcases, printer, detailed=False):
         deps.setdefault(t.check.name, [])
         deps[t.check.name].append((t, t.deps))
 
-    checks = set(t.check for t in testcases)
+    checks = set(
+        t.check for t in testcases
+        if detailed or not t.check.is_fixture()
+    )
     printer.info(
         '\n'.join(format_check(c, deps[c.name], detailed) for c in checks)
     )

unittests/resources/checks_unlisted/fixtures_complex.py

@@ -61,7 +61,11 @@ def validate_fixture_resolution(self):
             # Assert that there are only 4 underlying fixture instances.
             sn.assert_eq(
                 sn.len({self.f0, self.f1, self.f2, self.f3, *self.f4}), 4
-            )
+            ),
+
+            # Assert is_fixture() function
+            sn.assert_true(self.f0.is_fixture()),
+            sn.assert_false(self.is_fixture())
         ])