TEST: Add test for case UnsignedIntegerToUnsignedInteger

Author: ubaidsk

integration_tests/CMakeLists.txt

@@ -632,6 +632,7 @@ RUN(NAME vec_01              LABELS cpython llvm c NOFAST)
 RUN(NAME test_str_comparison LABELS cpython llvm c)
 RUN(NAME test_bit_length     LABELS cpython llvm c)
 RUN(NAME str_to_list_cast    LABELS cpython llvm c)
+RUN(NAME cast_01             LABELS cpython llvm c)
 RUN(NAME test_sys_01         LABELS cpython llvm c NOFAST)
 RUN(NAME intent_01           LABELS cpython llvm)
 

integration_tests/cast_01.py

@@ -0,0 +1,18 @@
+from lpython import i32, u8, u32, dataclass
+from numpy import empty, uint8
+
+@dataclass
+class LPBHV_small:
+    dim : i32 = 4
+    a : u8[4] = empty(4, dtype=uint8)
+
+def main0():
+    lphv_small : LPBHV_small = LPBHV_small()
+    i: i32
+    for i in range(4):
+        lphv_small.a[i] = u8(10 + i)
+        elt: u32 = u32(lphv_small.a[i])
+        print(elt)
+        assert elt == u32(10 + i)
+
+main0()