[bugfix] List inherited pipeline hooks with the -L option

reframe/core/pipeline.py

@@ -148,6 +148,17 @@ def disable_hook(cls, hook_name):
         '''
         cls._rfm_disabled_hooks.add(hook_name)
 
+    @classmethod
+    def pipeline_hooks(cls):
+        ret = {}
+        for c in cls.mro():
+            if hasattr(c, '_rfm_pipeline_hooks'):
+                for kind, hook in c._rfm_pipeline_hooks.items():
+                    ret.setdefault(kind, [])
+                    ret[kind] += hook
+
+        return ret
+
     #: The name of the test.
     #:
     #: :type: string that can contain any character except ``/``

reframe/frontend/cli.py

@@ -71,7 +71,7 @@ def fmt_deps():
         'Node allocation': node_alloc_scheme,
         'Pipeline hooks': {
             k: fmt_list(fn.__name__ for fn in v)
-            for k, v in type(check)._rfm_pipeline_hooks.items()
+            for k, v in check.pipeline_hooks().items()
         },
         'Tags': fmt_list(check.tags),
         'Valid environments': fmt_list(check.valid_prog_environs),

unittests/test_pipeline.py

@@ -633,6 +633,10 @@ class MyTest(DerivedTest):
     _run(test, *local_exec_ctx)
     assert test.var == 2
     assert test.foo == 1
+    assert test.pipeline_hooks() == {
+        'post_setup': [DerivedTest.z, BaseTest.x],
+        'pre_run': [C.y],
+    }
 
 
 def test_overriden_hooks(local_exec_ctx):