added unit tests for range function

tests/test_range.py

@@ -0,0 +1,61 @@
+import random
+
+import pytest
+
+import arrayfire_wrapper.dtypes as dtypes
+import arrayfire_wrapper.lib as wrapper
+
+
+@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_range_shape(shape: tuple) -> None:
+    """Test if the range function output an AFArray with the correct shape"""
+    dim = 2
+    dtype = dtypes.s16
+
+    result = wrapper.range(shape, dim, dtype)
+
+    assert wrapper.get_dims(result)[0 : len(shape)] == shape  # noqa: E203
+
+
+def test_range_invalid_shape() -> None:
+    """Test if range function correctly handles an invalid shape"""
+    with pytest.raises(TypeError):
+        shape = (
+            random.randint(1, 10),
+            random.randint(1, 10),
+            random.randint(1, 10),
+            random.randint(1, 10),
+            random.randint(1, 10),
+        )
+        dim = 2
+        dtype = dtypes.s16
+
+        wrapper.range(shape, dim, dtype)
+
+
+@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_range_invalid_dim(shape: tuple) -> None:
+    """Test if the range function can properly handle and invalid dimension given"""
+    with pytest.raises(RuntimeError):
+        dim = random.randint(4, 10)
+        dtype = dtypes.s16
+
+        wrapper.range(shape, dim, dtype)