Add and enable tests

Author: Smit-create

integration_tests/CMakeLists.txt

@@ -694,7 +694,8 @@ RUN(NAME global_syms_04    LABELS cpython llvm c wasm wasm_x64)
 RUN(NAME global_syms_05    LABELS cpython llvm c)
 RUN(NAME global_syms_06    LABELS cpython llvm c)
 
-RUN(NAME callback_01       LABELS cpython llvm)
+RUN(NAME callback_01       LABELS cpython llvm c)
+RUN(NAME callback_02       LABELS cpython llvm c)
 
 # Intrinsic Functions
 RUN(NAME intrinsics_01     LABELS cpython llvm NOFAST) # any

integration_tests/callback_02.py

@@ -0,0 +1,18 @@
+from lpython import ccallback, i32, Callable
+
+# test issue 2169
+
+def foo(x : i32) -> i32:
+    return x**2
+
+def bar(func : Callable[[i32], i32], arg : i32) -> i32:
+    return func(arg)
+
+@ccallback
+def entry_point() -> None:
+    z: i32 = 5
+    x: i32 = bar(foo, z)
+    assert z**2 == x
+
+
+entry_point()