Add test to check identity matrix works with arguments switched

Author: rsdc2

tests/utilities/matrices/test_identity.py

@@ -44,6 +44,25 @@ def test_apply_2x2_identity_happy(matrix: list[list[float]]):
     assert result == matrix
 
 
+@pytest.mark.parametrize("matrix", [
+    [[1., 0.],
+     [0., 1.]],
+    [[2., 1.],
+     [3., 4.]],
+     [[2., 3., 5.],
+      [1., 4., 6.]]
+])
+def test_apply_2x2_identity_switched_happy(matrix: list[list[float]]):
+    """
+    Same as previous test, but with the operands switched
+    """
+    qscode = matrix_dot_product_code(id2x2, matrix)
+
+    result = qsharp.eval(qscode)
+
+    assert result == matrix
+
+
 @pytest.mark.parametrize("matrix", [
     [[1.]]
 ])