improve coverage (#2113)

Author: vtavana

dpnp/dpnp_utils/dpnp_utils_einsum.py

@@ -109,29 +109,6 @@ def _compute_size_by_dict(indices, idx_dict):
     return ret
 
 
-def _compute_size(start, shape):
-    """
-    Compute the total size of a multi-dimensional array starting from a given index.
-
-    Parameters
-    ----------
-    start : int
-        The starting index from which to compute the size.
-    shape : tuple
-        The shape of the multi-dimensional array.
-
-    Returns
-    -------
-    out : int
-        The total size of the array.
-
-    """
-    ret = 1
-    for i in range(start, len(shape)):
-        ret *= shape[i]
-    return ret
-
-
 def _einsum_diagonals(input_subscripts, operands):
     """
     Adopted from _einsum_diagonals in cupy/core/_einsum.py
@@ -818,11 +795,11 @@ def _parse_int_subscript(list_subscript):
                     "For this input type lists must contain "
                     "either int or Ellipsis"
                 ) from e
-            if isinstance(s, int):
-                if not 0 <= s < len(_einsum_symbols):
-                    raise ValueError(
-                        f"subscript is not within the valid range [0, {len(_einsum_symbols)})."
-                    )
+
+            if not 0 <= s < len(_einsum_symbols):
+                raise ValueError(
+                    f"subscript is not within the valid range [0, {len(_einsum_symbols)})."
+                )
             str_subscript += _einsum_symbols[s]
     return str_subscript
 
@@ -1116,12 +1093,14 @@ def dpnp_einsum(
                     f"'{_chr(label)}' which never appeared in an input."
                 )
         if len(output_subscript) != len(set(output_subscript)):
+            repeated_subscript = []
             for label in output_subscript:
                 if output_subscript.count(label) >= 2:
-                    raise ValueError(
-                        "einstein sum subscripts string includes output "
-                        f"subscript '{_chr(label)}' multiple times."
-                    )
+                    repeated_subscript.append(_chr(label))
+            raise ValueError(
+                "einstein sum subscripts string includes output "
+                f"subscript {set(repeated_subscript)} multiple times."
+            )
 
     _einsum_diagonals(input_subscripts, operands)
 

dpnp/dpnp_utils/dpnp_utils_statistics.py

@@ -25,7 +25,7 @@
 
 
 import dpnp
-from dpnp.dpnp_utils import get_usm_allocations
+from dpnp.dpnp_utils import get_usm_allocations, map_dtype_to_device
 
 __all__ = ["dpnp_cov"]
 
@@ -73,12 +73,7 @@ def _get_2dmin_array(x, dtype):
             dtypes.append(y.dtype)
         dtype = dpnp.result_type(*dtypes)
         # TODO: remove when dpctl.result_type() is returned dtype based on fp64
-        fp64 = queue.sycl_device.has_aspect_fp64
-        if not fp64:
-            if dtype == dpnp.float64:
-                dtype = dpnp.float32
-            elif dtype == dpnp.complex128:
-                dtype = dpnp.complex64
+        dtype = map_dtype_to_device(dtype, queue.sycl_device)
 
     X = _get_2dmin_array(m, dtype)
     if y is not None:

tests/test_linalg.py

@@ -719,6 +719,10 @@ def test_einsum_error1(self):
         # different size for same label 5 != 4
         assert_raises(ValueError, inp.einsum, "ii", a)
 
+        a = inp.arange(25).reshape(5, 5)
+        # subscript is not within the valid range [0, 52)
+        assert_raises(ValueError, inp.einsum, a, [53, 53])
+
     @pytest.mark.parametrize("do_opt", [True, False])
     @pytest.mark.parametrize("xp", [numpy, inp])
     def test_einsum_error2(self, do_opt, xp):
@@ -1740,6 +1744,17 @@ def test_output_order(self):
             tmp = inp.einsum("...ft,mf->...mt", d, c, order="a", optimize=opt)
             assert tmp.flags.c_contiguous
 
+    def test_einsum_path(self):
+        # Test einsum path for covergae
+        a = numpy.random.rand(1, 2, 3, 4)
+        b = numpy.random.rand(4, 3, 2, 1)
+        a_dp = inp.array(a)
+        b_dp = inp.array(b)
+        expected = numpy.einsum_path("ijkl,dcba->dcba", a, b)
+        result = inp.einsum_path("ijkl,dcba->dcba", a_dp, b_dp)
+        assert expected[0] == result[0]
+        assert expected[1] == result[1]
+
 
 class TestInv:
     @pytest.mark.parametrize(