[test] update tags (#128)

Enable xfails that pass

Author: Vipul-Cariappa

test/test_cpp11features.py

@@ -337,7 +337,6 @@ def test09_lambda_calls(self):
             assert l3
             assert l3(2) == 48
 
-    @mark.xfail
     def test10_optional(self):
         """Use of optional and nullopt"""
 

test/test_crossinheritance.py

@@ -825,7 +825,7 @@ def z(self):
         assert a.m_2 == 42
         assert a.m_3 == 67
 
-    @mark.xfail(run=not IS_CLANG_DEBUG, reason="Crashes with ClangRepl with 'toString not implemented'")
+    @mark.xfail(run=False, condition=IS_LINUX_ARM, reason="Crashes with Valgrind on Linux ARM, but passes in all platforms otherwise")
     def test21_multiple_inheritance_with_constructors(self):
         """Multiple inheritance with constructors"""
 
@@ -913,7 +913,7 @@ def z(self):
         assert a.m_2 ==  88
         assert a.m_3 == -11
 
-    @mark.xfail(run=not IS_CLANG_DEBUG, reason="Crashes with ClangRepl with 'toString not implemented'")
+    @mark.xfail(run=False, condition=IS_LINUX_ARM, reason="Crashes with Valgrind on Linux ARM, but passes in all platforms otherwise")
     def test22_multiple_inheritance_with_defaults(self):
         """Multiple inheritance with defaults"""
 
@@ -1285,7 +1285,7 @@ class D(B):
             assert inst.fun1() == val1
             assert inst.fun2() == inst.fun1()
 
-    @mark.xfail(run=not IS_CLANG_DEBUG, reason="Crashes with ClangRepl with 'toString not implemented'")
+    @mark.xfail(run=False, condition=IS_LINUX_ARM, reason="Crashes with Valgrind on Linux ARM, but passes in all platforms otherwise")
     def test29_cross_deep_multi(self):
         """Deep multi-inheritance hierarchy"""
 
@@ -1527,7 +1527,7 @@ def getValue(self):
         gc.collect()
         assert ns.Component.get_count() == 0
 
-    @mark.xfail(run=not IS_CLANG_DEBUG, reason="Crashes with ClangRepl with 'toString not implemented'")
+    @mark.xfail(run=False, condition=IS_LINUX_ARM, reason="Crashes with Valgrind on Linux ARM, but passes in all platforms otherwise")
     def test32_by_value_arguments(self):
         """Override base function taking by-value arguments"""
 

test/test_regression.py

@@ -1015,7 +1015,7 @@ def test34_print_empty_collection(self):
         v = cppyy.gbl.std.vector[int]()
         str(v)
 
-    @mark.xfail(run=IS_CLANG_REPL, reason="Crashes on Cling")
+    @mark.xfail(run=IS_CLANG_REPL, condition=IS_MAC or not IS_CLANG_REPL, reason="Crashes on Cling")
     def test35_filesytem(self):
         """Static path object used to crash on destruction"""