Add tests

Author: Smit-create

integration_tests/CMakeLists.txt

@@ -561,6 +561,11 @@ RUN(NAME enum_07             IMPORT_PATH ..
 RUN(NAME union_01            LABELS cpython llvm c)
 RUN(NAME union_02            LABELS llvm c)
 RUN(NAME union_03            LABELS cpython llvm c)
+RUN(NAME union_01            LABELS cpython llvm c)
+RUN(NAME union_02            LABELS llvm c)
+RUN(NAME union_03            LABELS cpython llvm c)
+RUN(NAME union_04            IMPORT_PATH ..
+                             LABELS cpython llvm c)
 RUN(NAME test_str_to_int     LABELS cpython llvm c)
 RUN(NAME test_platform       LABELS cpython llvm c)
 RUN(NAME test_vars_01        LABELS cpython llvm)

integration_tests/union_04.py

@@ -0,0 +1,24 @@
+from union_01 import u_type
+from lpython import f32, f64, i64
+
+# Test taken from union_01.py but checks importing union
+
+def test_union_04():
+    unionobj: u_type = u_type()
+    unionobj.integer32 = 1
+    print(unionobj.integer32)
+    assert unionobj.integer32 == 1
+
+    unionobj.real32 = f32(2.0)
+    print(unionobj.real32)
+    assert abs(f64(unionobj.real32) - 2.0) <= 1e-6
+
+    unionobj.real64 = 3.5
+    print(unionobj.real64)
+    assert abs(unionobj.real64 - 3.5) <= 1e-12
+
+    unionobj.integer64 = i64(4)
+    print(unionobj.integer64)
+    assert unionobj.integer64 == i64(4)
+
+test_union_04()