TST: Xfail tests when using clang-cl

Author: bashtage

numpy/core/tests/test_einsum.py

@@ -10,6 +10,12 @@
     assert_raises, suppress_warnings, assert_raises_regex, assert_allclose
     )
 
+try:
+    COMPILERS = np.show_config(mode="dicts")["Compilers"]
+    USING_CLANG_CL = COMPILERS["c"]["name"] == "clang-cl"
+except TypeError:
+    USING_CLANG_CL = False
+
 # Setup for optimize einsum
 chars = 'abcdefghij'
 sizes = np.array([2, 3, 4, 5, 4, 3, 2, 6, 5, 4, 3])
@@ -611,13 +617,23 @@ def check_einsum_sums(self, dtype, do_opt=False):
                            [2.])  # contig_stride0_outstride0_two
 
     def test_einsum_sums_int8(self):
-        if sys.platform == 'darwin' and platform.machine() == 'x86_64':
-            pytest.xfail('Fails on macOS x86-64 with Meson, see gh-23838')
+        if (
+                (sys.platform == 'darwin' and platform.machine() == 'x86_64')
+                or
+                USING_CLANG_CL
+        ):
+            pytest.xfail('Fails on macOS x86-64 and when using clang-cl '
+                         'with Meson, see gh-23838')
         self.check_einsum_sums('i1')
 
     def test_einsum_sums_uint8(self):
-        if sys.platform == 'darwin' and platform.machine() == 'x86_64':
-            pytest.xfail('Fails on macOS x86-64 with Meson, see gh-23838')
+        if (
+                (sys.platform == 'darwin' and platform.machine() == 'x86_64')
+                or
+                USING_CLANG_CL
+        ):
+            pytest.xfail('Fails on macOS x86-64 and when using clang-cl '
+                         'with Meson, see gh-23838')
         self.check_einsum_sums('u1')
 
     def test_einsum_sums_int16(self):

numpy/core/tests/test_scalarmath.py

@@ -17,6 +17,12 @@
     assert_warns, _SUPPORTS_SVE,
     )
 
+try:
+    COMPILERS = np.show_config(mode="dicts")["Compilers"]
+    USING_CLANG_CL = COMPILERS["c"]["name"] == "clang-cl"
+except TypeError:
+    USING_CLANG_CL = False
+
 types = [np.bool_, np.byte, np.ubyte, np.short, np.ushort, np.intc, np.uintc,
          np.int_, np.uint, np.longlong, np.ulonglong,
          np.single, np.double, np.longdouble, np.csingle,
@@ -798,7 +804,13 @@ class TestBitShifts:
     @pytest.mark.parametrize('op',
         [operator.rshift, operator.lshift], ids=['>>', '<<'])
     def test_shift_all_bits(self, type_code, op):
-        """ Shifts where the shift amount is the width of the type or wider """
+        """Shifts where the shift amount is the width of the type or wider """
+        if (
+                USING_CLANG_CL and
+                type_code in ("l", "L") and
+                op is operator.lshift
+        ):
+            pytest.xfail("Failing on clang-cl builds")
         # gh-2449
         dt = np.dtype(type_code)
         nbits = dt.itemsize * 8