Add numpy and cupy xfails for fft functions

Author: asmeurer

cupy-xfails.txt

@@ -175,3 +175,16 @@ array_api_tests/test_special_cases.py::test_iop[__imod__(isfinite(x1_i) and x1_i
 array_api_tests/test_special_cases.py::test_iop[__imod__(isfinite(x1_i) and x1_i > 0 and x2_i is -infinity) -> x2_i]
 array_api_tests/test_special_cases.py::test_iop[__imod__(isfinite(x1_i) and x1_i < 0 and x2_i is +infinity) -> x2_i]
 array_api_tests/test_special_cases.py::test_iop[__imod__(isfinite(x1_i) and x1_i < 0 and x2_i is -infinity) -> x1_i]
+
+# fft functions are not yet supported
+# (https://github.com/data-apis/array-api-compat/issues/67)
+array_api_tests/test_fft.py::test_fft
+array_api_tests/test_fft.py::test_ifft
+array_api_tests/test_fft.py::test_fftn
+array_api_tests/test_fft.py::test_ifftn
+array_api_tests/test_fft.py::test_rfft
+array_api_tests/test_fft.py::test_irfft
+array_api_tests/test_fft.py::test_rfftn
+array_api_tests/test_fft.py::test_irfftn
+array_api_tests/test_fft.py::test_hfft
+array_api_tests/test_fft.py::test_ihfft

numpy-1-21-xfails.txt

@@ -236,3 +236,16 @@ array_api_tests/test_special_cases.py::test_binary[remainder(x1_i is +0 and x2_i
 array_api_tests/test_special_cases.py::test_binary[remainder(x1_i is -0 and x2_i < 0) -> -0]
 array_api_tests/test_special_cases.py::test_binary[remainder(x1_i is -0 and x2_i > 0) -> +0]
 array_api_tests/test_special_cases.py::test_iop[__iadd__(x1_i is -0 and x2_i is -0) -> -0]
+
+# fft functions are not yet supported
+# (https://github.com/data-apis/array-api-compat/issues/67)
+array_api_tests/test_fft.py::test_fft
+array_api_tests/test_fft.py::test_ifft
+array_api_tests/test_fft.py::test_fftn
+array_api_tests/test_fft.py::test_ifftn
+array_api_tests/test_fft.py::test_rfft
+array_api_tests/test_fft.py::test_irfft
+array_api_tests/test_fft.py::test_rfftn
+array_api_tests/test_fft.py::test_irfftn
+array_api_tests/test_fft.py::test_hfft
+array_api_tests/test_fft.py::test_ihfft

numpy-xfails.txt

@@ -54,3 +54,16 @@ array_api_tests/meta/test_hypothesis_helpers.py::test_symmetric_matrices
 # The test suite is incorrectly checking sums that have loss of significance
 # (https://github.com/data-apis/array-api-tests/issues/168)
 array_api_tests/test_statistical_functions.py::test_sum
+
+# fft functions are not yet supported
+# (https://github.com/data-apis/array-api-compat/issues/67)
+array_api_tests/test_fft.py::test_fft
+array_api_tests/test_fft.py::test_ifft
+array_api_tests/test_fft.py::test_fftn
+array_api_tests/test_fft.py::test_ifftn
+array_api_tests/test_fft.py::test_rfft
+array_api_tests/test_fft.py::test_irfft
+array_api_tests/test_fft.py::test_rfftn
+array_api_tests/test_fft.py::test_irfftn
+array_api_tests/test_fft.py::test_hfft
+array_api_tests/test_fft.py::test_ihfft