1 files changed, 30 insertions, 0 deletions
diff --git a/tests/056.sh b/tests/056.sh
new file mode 100644
index 0000000..7bad4c0
--- /dev/null
+++ b/tests/056.sh
@@ -0,0 +1,30 @@
+set -e
+
+cat <<'EOF' > expected
+12
+EOF
+
+cat <<'EOF' > math.h
+int multiply(int a, int b) {
+    return a * b;
+}
+EOF
+
+cat <<'EOF' > calc.h
+#include "math.h"
+
+int calculate(int x) {
+    return multiply(x, 2);
+}
+
+int printf(const char*, ...);
+EOF
+
+bash ../../test_diff.sh <<'EOF'
+#include "calc.h"
+
+int main() {
+    printf("%d\n", calculate(6));
+    return 0;
+}
+EOF