1 files changed, 14 insertions, 0 deletions
diff --git a/tests/unions.c b/tests/unions.c
new file mode 100644
index 0000000..923a5b6
--- /dev/null
+++ b/tests/unions.c
@@ -0,0 +1,14 @@
+#include <helpers.h>
+
+union U {
+    int i;
+    long l;
+};
+
+int main() {
+    union U u;
+    ASSERT_EQ(8, sizeof(u));
+    u.l = 42;
+    ASSERT_EQ(42, u.i);
+    ASSERT_EQ(42, u.l);
+}