Skip some unsupported HPy tests for now

Author: fangerer

graalpython/lib-graalpython/modules/hpy/test/test_argparse.py

@@ -29,6 +29,7 @@
 to be able to use e.g. pytest.raises (which on PyPy will be implemented by a
 "fake pytest module")
 """
+import pytest
 from .support import HPyTest
 
 
@@ -83,6 +84,8 @@ def test_b(self):
             "function unsigned byte integer is less than minimum"
         )
 
+    # TODO(fa): needs to be fixed
+    @pytest.mark.skip
     def test_s(self):
         import pytest
         mod = self.make_parse_item("s", "const char*", "HPyUnicode_FromString")

graalpython/lib-graalpython/modules/hpy/test/test_hpytype.py

@@ -793,6 +793,7 @@ class Sub(mod.Dummy):
             pass
         assert isinstance(Sub(), mod.Dummy)
 
+    @pytest.mark.xfail
     def test_directly_setting_hpy_tpflags_internal_pure_raises(self):
         import pytest
         mod_src = """