Add constant tests (#17)

* added constant tests

* Fixed automatic checks - styling, import order, lint, static type checking

* Corrected redundant checks within tests

* Fixed import formatting and automatic checks

* Added back in complex tests, made fix to get_scalar function in manage_array

---------

Co-authored-by: Chaluvadi <[email protected]>

Author: sakchal

arrayfire_wrapper/lib/create_and_modify_array/manage_array.py

@@ -2,7 +2,7 @@
 from typing import cast
 
 from arrayfire_wrapper.defines import AFArray, ArrayBuffer, CDimT, CShape
-from arrayfire_wrapper.dtypes import Dtype
+from arrayfire_wrapper.dtypes import Dtype, c32, c64
 from arrayfire_wrapper.lib._utility import call_from_clib
 
 
@@ -165,7 +165,10 @@ def get_scalar(arr: AFArray, dtype: Dtype, /) -> int | float | complex | bool |
     """
     out = dtype.c_type()
     call_from_clib(get_scalar.__name__, ctypes.pointer(out), arr)
-    return cast(int | float | complex | bool | None, out.value)
+    if dtype == c32 or dtype == c64:
+        return complex(out[0], out[1]) # type: ignore
+    else:
+        return cast(int | float | complex | bool | None, out.value)
 
 
 def get_type(arr: AFArray, /) -> int:

tests/test_constants.py

@@ -0,0 +1,221 @@
+import random
+
+import pytest
+
+import arrayfire_wrapper.dtypes as dtypes
+import arrayfire_wrapper.lib as wrapper
+
+invalid_shape = (
+    random.randint(1, 10),
+    random.randint(1, 10),
+    random.randint(1, 10),
+    random.randint(1, 10),
+    random.randint(1, 10),
+)
+
+
+@pytest.mark.parametrize(
+    "shape",
+    [
+        (),
+        (random.randint(1, 10), 1),
+        (random.randint(1, 10), random.randint(1, 10)),
+        (random.randint(1, 10), random.randint(1, 10), random.randint(1, 10)),
+        (random.randint(1, 10), random.randint(1, 10), random.randint(1, 10), random.randint(1, 10)),
+    ],
+)
+def test_constant_shape(shape: tuple) -> None:
+    """Test if constant creates an array with the correct shape."""
+    number = 5.0
+    dtype = dtypes.s16
+
+    result = wrapper.constant(number, shape, dtype)
+
+    assert wrapper.get_dims(result)[0 : len(shape)] == shape  # noqa: E203
+
+
+@pytest.mark.parametrize(
+    "shape",
+    [
+        (),
+        (random.randint(1, 10), 1),
+        (random.randint(1, 10), random.randint(1, 10)),
+        (random.randint(1, 10), random.randint(1, 10), random.randint(1, 10)),
+        (random.randint(1, 10), random.randint(1, 10), random.randint(1, 10), random.randint(1, 10)),
+    ],
+)
+def test_constant_complex_shape(shape: tuple) -> None:
+    """Test if constant_complex creates an array with the correct shape."""
+    dtype = dtypes.c32
+
+    dtype = dtypes.c32
+    rand_array = wrapper.randu((1, 1), dtype)
+    number = wrapper.get_scalar(rand_array, dtype)
+
+    if isinstance(number, (complex)):
+        result = wrapper.constant_complex(number, shape, dtype)
+        assert wrapper.get_dims(result)[0 : len(shape)] == shape  # noqa: E203
+    else:
+        pytest.skip()
+
+
+@pytest.mark.parametrize(
+    "shape",
+    [
+        (),
+        (random.randint(1, 10), 1),
+        (random.randint(1, 10), random.randint(1, 10)),
+        (random.randint(1, 10), random.randint(1, 10), random.randint(1, 10)),
+        (random.randint(1, 10), random.randint(1, 10), random.randint(1, 10), random.randint(1, 10)),
+    ],
+)
+def test_constant_long_shape(shape: tuple) -> None:
+    """Test if constant_long creates an array with the correct shape."""
+    dtype = dtypes.s64
+    rand_array = wrapper.randu((1, 1), dtype)
+    number = wrapper.get_scalar(rand_array, dtype)
+
+    if isinstance(number, (int, float)):
+        result = wrapper.constant_long(number, shape, dtype)
+
+        assert wrapper.get_dims(result)[0 : len(shape)] == shape  # noqa: E203
+
+
+@pytest.mark.parametrize(
+    "shape",
+    [
+        (),
+        (random.randint(1, 10), 1),
+        (random.randint(1, 10), random.randint(1, 10)),
+        (random.randint(1, 10), random.randint(1, 10), random.randint(1, 10)),
+        (random.randint(1, 10), random.randint(1, 10), random.randint(1, 10), random.randint(1, 10)),
+    ],
+)
+def test_constant_ulong_shape(shape: tuple) -> None:
+    """Test if constant_ulong creates an array with the correct shape."""
+    dtype = dtypes.u64
+    rand_array = wrapper.randu((1, 1), dtype)
+    number = wrapper.get_scalar(rand_array, dtype)
+
+    if isinstance(number, (int, float)):
+        result = wrapper.constant_ulong(number, shape, dtype)
+
+        assert wrapper.get_dims(result)[0 : len(shape)] == shape  # noqa: E203
+    else:
+        pytest.skip()
+
+
+def test_constant_shape_invalid() -> None:
+    """Test if constant handles a shape with greater than 4 dimensions"""
+    with pytest.raises(TypeError):
+        number = 5.0
+        dtype = dtypes.s16
+
+        wrapper.constant(number, invalid_shape, dtype)
+
+
+def test_constant_complex_shape_invalid() -> None:
+    """Test if constant_complex handles a shape with greater than 4 dimensions"""
+    with pytest.raises(TypeError):
+        dtype = dtypes.c32
+        rand_array = wrapper.randu((1, 1), dtype)
+        number = wrapper.get_scalar(rand_array, dtype)
+
+        if isinstance(number, (int, float, complex)):
+            wrapper.constant_complex(number, invalid_shape, dtype)
+
+
+def test_constant_long_shape_invalid() -> None:
+    """Test if constant_long handles a shape with greater than 4 dimensions"""
+    with pytest.raises(TypeError):
+        dtype = dtypes.s64
+        rand_array = wrapper.randu((1, 1), dtype)
+        number = wrapper.get_scalar(rand_array, dtype)
+
+        if isinstance(number, (int, float)):
+            wrapper.constant_long(number, invalid_shape, dtype)
+
+
+def test_constant_ulong_shape_invalid() -> None:
+    """Test if constant_ulong handles a shape with greater than 4 dimensions"""
+    with pytest.raises(TypeError):
+        dtype = dtypes.u64
+        rand_array = wrapper.randu((1, 1), dtype)
+        number = wrapper.get_scalar(rand_array, dtype)
+
+        if isinstance(number, (int, float)):
+            wrapper.constant_ulong(number, invalid_shape, dtype)
+
+
+@pytest.mark.parametrize(
+    "dtype_index",
+    [i for i in range(13)],
+)
+def test_constant_dtype(dtype_index: int) -> None:
+    """Test if constant creates an array with the correct dtype."""
+    if dtype_index in [1, 3] or (dtype_index == 2 and not wrapper.get_dbl_support()):
+        pytest.skip()
+
+    dtype = dtypes.c_api_value_to_dtype(dtype_index)
+
+    rand_array = wrapper.randu((1, 1), dtype)
+    value = wrapper.get_scalar(rand_array, dtype)
+    shape = (2, 2)
+    if isinstance(value, (int, float)):
+        result = wrapper.constant(value, shape, dtype)
+        assert dtypes.c_api_value_to_dtype(wrapper.get_type(result)) == dtype
+    else:
+        pytest.skip()
+
+
+@pytest.mark.parametrize(
+    "dtype_index",
+    [i for i in range(13)],
+)
+def test_constant_complex_dtype(dtype_index: int) -> None:
+    """Test if constant_complex creates an array with the correct dtype."""
+    if dtype_index not in [1, 3] or (dtype_index == 3 and not wrapper.get_dbl_support()):
+        pytest.skip()
+
+    dtype = dtypes.c_api_value_to_dtype(dtype_index)
+    rand_array = wrapper.randu((1, 1), dtype)
+    value = wrapper.get_scalar(rand_array, dtype)
+    shape = (2, 2)
+
+    if isinstance(value, (int, float, complex)):
+        result = wrapper.constant_complex(value, shape, dtype)
+        assert dtypes.c_api_value_to_dtype(wrapper.get_type(result)) == dtype
+    else:
+        pytest.skip()
+
+
+def test_constant_long_dtype() -> None:
+    """Test if constant_long creates an array with the correct dtype."""
+    dtype = dtypes.s64
+
+    rand_array = wrapper.randu((1, 1), dtype)
+    value = wrapper.get_scalar(rand_array, dtype)
+    shape = (2, 2)
+
+    if isinstance(value, (int, float)):
+        result = wrapper.constant_long(value, shape, dtype)
+
+        assert dtypes.c_api_value_to_dtype(wrapper.get_type(result)) == dtype
+    else:
+        pytest.skip()
+
+
+def test_constant_ulong_dtype() -> None:
+    """Test if constant_ulong creates an array with the correct dtype."""
+    dtype = dtypes.u64
+
+    rand_array = wrapper.randu((1, 1), dtype)
+    value = wrapper.get_scalar(rand_array, dtype)
+    shape = (2, 2)
+
+    if isinstance(value, (int, float)):
+        result = wrapper.constant_ulong(value, shape, dtype)
+
+        assert dtypes.c_api_value_to_dtype(wrapper.get_type(result)) == dtype
+    else:
+        pytest.skip()