Add property flags to dpnp_array (#1265)

* Add property flags to dpnp_array

* Added more tests for dpnp_array.flags

* Added more dtype for dpnp_flags test.

Author: npolina4

dpnp/dpnp_array.py

@@ -578,7 +578,14 @@ def fill(self, value):
         for i in range(self.size):
             self.flat[i] = value
 
- # 'flags',
+    @property
+    def flags(self):
+        """
+        Return information about the memory layout of the array.
+
+        """
+
+        return self._array_obj.flags
 
     @property
     def flat(self):

tests/skipped_tests.tbl

@@ -282,12 +282,6 @@ tests/third_party/cupy/core_tests/test_ndarray_reduction.py::TestCubReduction_pa
 tests/third_party/cupy/core_tests/test_ndarray_reduction.py::TestCubReduction_param_6_{order='F', shape=(10, 20, 30)}::test_cub_min
 tests/third_party/cupy/core_tests/test_ndarray_reduction.py::TestCubReduction_param_7_{order='F', shape=(10, 20, 30, 40)}::test_cub_max
 tests/third_party/cupy/core_tests/test_ndarray_reduction.py::TestCubReduction_param_7_{order='F', shape=(10, 20, 30, 40)}::test_cub_min
-tests/third_party/cupy/creation_tests/test_basic.py::TestBasic::test_empty_like_contiguity
-tests/third_party/cupy/creation_tests/test_basic.py::TestBasicReshape_param_0_{shape=4}::test_empty_like_reshape_contiguity
-tests/third_party/cupy/creation_tests/test_basic.py::TestBasicReshape_param_1_{shape=(4,)}::test_empty_like_reshape_contiguity
-tests/third_party/cupy/creation_tests/test_basic.py::TestBasicReshape_param_2_{shape=(4, 2)}::test_empty_like_reshape_contiguity
-tests/third_party/cupy/creation_tests/test_basic.py::TestBasicReshape_param_3_{shape=(4, 2, 3)}::test_empty_like_reshape_contiguity
-tests/third_party/cupy/creation_tests/test_basic.py::TestBasicReshape_param_4_{shape=(5, 4, 2, 3)}::test_empty_like_reshape_contiguity
 tests/third_party/cupy/creation_tests/test_basic.py::TestBasicReshape_param_0_{shape=4}::test_empty_like_K_strides_reshape
 tests/third_party/cupy/creation_tests/test_basic.py::TestBasicReshape_param_0_{shape=4}::test_empty_like_reshape_contiguity2
 tests/third_party/cupy/creation_tests/test_basic.py::TestBasicReshape_param_0_{shape=4}::test_empty_like_reshape_contiguity2_cupy_only

tests/skipped_tests_gpu.tbl

@@ -458,12 +458,6 @@ tests/third_party/cupy/core_tests/test_ndarray_reduction.py::TestCubReduction_pa
 tests/third_party/cupy/core_tests/test_ndarray_reduction.py::TestCubReduction_param_6_{order='F', shape=(10, 20, 30)}::test_cub_min
 tests/third_party/cupy/core_tests/test_ndarray_reduction.py::TestCubReduction_param_7_{order='F', shape=(10, 20, 30, 40)}::test_cub_max
 tests/third_party/cupy/core_tests/test_ndarray_reduction.py::TestCubReduction_param_7_{order='F', shape=(10, 20, 30, 40)}::test_cub_min
-tests/third_party/cupy/creation_tests/test_basic.py::TestBasic::test_empty_like_contiguity
-tests/third_party/cupy/creation_tests/test_basic.py::TestBasicReshape_param_0_{shape=4}::test_empty_like_reshape_contiguity
-tests/third_party/cupy/creation_tests/test_basic.py::TestBasicReshape_param_1_{shape=(4,)}::test_empty_like_reshape_contiguity
-tests/third_party/cupy/creation_tests/test_basic.py::TestBasicReshape_param_2_{shape=(4, 2)}::test_empty_like_reshape_contiguity
-tests/third_party/cupy/creation_tests/test_basic.py::TestBasicReshape_param_3_{shape=(4, 2, 3)}::test_empty_like_reshape_contiguity
-tests/third_party/cupy/creation_tests/test_basic.py::TestBasicReshape_param_4_{shape=(5, 4, 2, 3)}::test_empty_like_reshape_contiguity
 tests/third_party/cupy/creation_tests/test_basic.py::TestBasicReshape_param_0_{shape=4}::test_empty_like_K_strides_reshape
 tests/third_party/cupy/creation_tests/test_basic.py::TestBasicReshape_param_0_{shape=4}::test_empty_like_reshape_contiguity2
 tests/third_party/cupy/creation_tests/test_basic.py::TestBasicReshape_param_0_{shape=4}::test_empty_like_reshape_contiguity2_cupy_only

tests/test_arraycreation.py

@@ -506,7 +506,6 @@ def test_full_like(array, fill_value, dtype, order):
     assert_array_equal(func(numpy, a), func(dpnp, ia))
 
 
-@pytest.mark.skip(reason="dpnp.ndarray.flags are not implemented")
 @pytest.mark.parametrize("order1",
                          ["F", "C"],
                          ids=['F', 'C'])

tests/test_dparray.py

@@ -1,6 +1,7 @@
 import dpnp
 import numpy
 import pytest
+import dpctl.tensor as dpt
 
 
 @pytest.mark.parametrize("res_dtype",
@@ -32,3 +33,38 @@ def test_flatten(arr, arr_dtype):
     expected = numpy_array.flatten()
     result = dpnp_array.flatten()
     numpy.testing.assert_array_equal(expected, result)
+
+
+@pytest.mark.parametrize("shape",
+                         [(), 0, (0,), (2), (5, 2), (5, 0, 2), (5, 3, 2)],
+                         ids=['()', '0', '(0,)', '(2)', '(5, 2)', '(5, 0, 2)', '(5, 3, 2)'])
+@pytest.mark.parametrize("order",
+                         ["C", "F"],
+                         ids=['C', 'F'])
+def test_flags(shape, order):
+    usm_array = dpt.usm_ndarray(shape, order=order)
+    numpy_array = numpy.ndarray(shape, order=order)
+    dpnp_array = dpnp.ndarray(shape, order=order)
+    assert usm_array.flags == dpnp_array.flags
+    assert numpy_array.flags.c_contiguous == dpnp_array.flags.c_contiguous
+    assert numpy_array.flags.f_contiguous == dpnp_array.flags.f_contiguous
+
+
+@pytest.mark.parametrize("dtype",
+                         [numpy.complex64, numpy.float32, numpy.int64, numpy.int32, numpy.bool],
+                         ids=['complex64', 'float32', 'int64', 'int32', 'bool'])
+@pytest.mark.parametrize("strides",
+                         [(1, 4) , (4, 1)],
+                         ids=['(1, 4)', '(4, 1)'])
+@pytest.mark.parametrize("order",
+                         ["C", "F"],
+                         ids=['C', 'F'])
+def test_flags_strides(dtype, order, strides):
+    itemsize = numpy.dtype(dtype).itemsize
+    numpy_strides = tuple([el * itemsize for el in strides])
+    usm_array = dpt.usm_ndarray((4, 4), dtype=dtype, order=order, strides=strides)
+    numpy_array = numpy.ndarray((4, 4), dtype=dtype, order=order, strides=numpy_strides)
+    dpnp_array = dpnp.ndarray((4, 4), dtype=dtype, order=order, strides=strides)
+    assert usm_array.flags == dpnp_array.flags
+    assert numpy_array.flags.c_contiguous == dpnp_array.flags.c_contiguous
+    assert numpy_array.flags.f_contiguous == dpnp_array.flags.f_contiguous