Add tests for new fill method

Author: ndgrigorian

tests/test_fill.py

@@ -0,0 +1,61 @@
+import dpctl
+import numpy as np
+import pytest
+from dpctl.utils import ExecutionPlacementError
+from numpy.testing import assert_array_equal
+
+import dpnp as dnp
+
+
+def test_fill_non_scalar():
+    a = dnp.ones(5, dtype="i4")
+    val = dnp.ones(2, dtype="i4")
+
+    with pytest.raises(ValueError):
+        a.fill(val)
+
+    with pytest.raises(TypeError):
+        a.fill(dict())
+
+
+def test_fill_compute_follows_data():
+    q1 = dpctl.SyclQueue()
+    q2 = dpctl.SyclQueue()
+
+    a = dnp.ones(5, dtype="i4", sycl_queue=q1)
+    val = dnp.ones((), dtype=a.dtype, sycl_queue=q2)
+
+    with pytest.raises(ExecutionPlacementError):
+        a.fill(val)
+
+
+def test_fill_strided_array():
+    a = dnp.zeros(100, dtype="i4")
+    b = a[::-2]
+
+    expected = dnp.tile(dnp.asarray([0, 1], dtype=a.dtype), 50)
+
+    b.fill(1)
+    assert_array_equal(b, 1)
+    assert_array_equal(a, expected)
+
+
+@pytest.mark.parametrize("order", ["C", "F"])
+def test_fill_strided_2d_array(order):
+    a = dnp.zeros((10, 10), dtype="i4", order=order)
+    b = a[::-2, ::2]
+
+    expected = dnp.copy(a)
+    expected[::-2, ::2] = 1
+
+    b.fill(1)
+    assert_array_equal(b, 1)
+    assert_array_equal(a, expected)
+
+
+@pytest.mark.parametrize("order", ["C", "F"])
+def test_fill_memset(order):
+    a = dnp.ones((10, 10), dtype="i4", order=order)
+    a.fill(0)
+
+    assert_array_equal(a, 0)