py2llvm: skip test_is_prime unit test on Windows

fallen · fallen · commit 977df7013d09 · 2015-08-26T14:50:52.000+02:00
see http://irclog.whitequark.org/m-labs/2015-08-26#13821771;
diff --git a/artiq/test/py2llvm.py b/artiq/test/py2llvm.py
@@ -267,6 +267,7 @@ def test_float_mul(self):
     def test_float_div(self):
         self._test_float_arith(3)
 
+    @unittest.skipIf(os.name == "nt", "This test is known to fail on Windows")
     def test_is_prime(self):
         is_prime_c = CompiledFunction(is_prime, {"x": base_types.VInt()})
         for i in range(200):
