1 files changed, 106 insertions, 0 deletions
diff --git a/tests/test_function_macros.sh b/tests/test_function_macros.sh
new file mode 100644
index 0000000..4bc0cc2
--- /dev/null
+++ b/tests/test_function_macros.sh
@@ -0,0 +1,106 @@
+cat <<'EOF' > expected
+42
+246
+221
+EOF
+
+test_diff <<'EOF'
+int printf();
+
+#define A(x) x
+#define B(x) x+x
+#define C(x, y) x*y
+
+int main() {
+    printf("%d\n", A(42));
+    printf("%d\n", B
+    (123));
+    printf("%d\n", C (13, 17));
+}
+EOF
+
+cat <<'EOF' > expected
+123
+EOF
+test_diff <<'EOF'
+#define A(x) x
+
+int printf();
+
+int main() {
+    printf("%d\n", A ( 123 ));
+}
+EOF
+
+cat <<'EOF' > expected
+main.c:4: expected ')', but got '<new-line>'
+EOF
+test_compile_error <<'EOF'
+#define A(x) x
+
+int main() {
+#if A (
+       123) < A(345)
+    printf("1\n");
+#endif
+}
+EOF
+
+cat <<'EOF' > expected
+42
+100 200
+300
+0
+1 2 3
+15
+42
+123
+879
+EOF
+
+test_diff <<'EOF'
+int printf();
+
+#define ADD(a, b) ((a) + (b))
+#define PRINT_TWO(x, y) printf("%d %d\n", x, y)
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+#define NESTED(x) (x)
+#define CONCAT3(a, b, c) a ## b ## c
+
+int main() {
+    printf("%d\n", ADD(40, 2));
+    PRINT_TWO(100, 200);
+    printf("%d\n", MAX(100 + 200, 250));
+    printf("%d\n");
+    NESTED((printf("1 "), printf("2 "), printf("3\n"), 0));
+
+    int x = 5, y = 10;
+    printf("%d\n", ADD(x + 2, y - 2));
+    printf("%d\n", ADD(MAX(10, 20), MAX(15 + 5, 22)));
+    printf("%d\n", ADD(  100  ,  23  ));
+    printf("%d\n", ADD(NESTED((100 + 200)), MAX((123 + 456), (111 + 222))));
+}
+EOF
+
+cat <<'EOF' > expected
+42
+123
+EOF
+test_diff <<'EOF'
+int printf(const char*, ...);
+
+int main() {
+    // TODO: check if "foo" is expanded to "foo" or not once '#' operator is implemented.
+#define foo foo
+    int foo = 42;
+    printf("%d\n", foo);
+
+    // TODO: check if "a" is expanded to "a" or not once '#' operator is implemented.
+#define a b
+#define b c
+#define c a
+    int a = 123;
+    printf("%d\n", a);
+}
+EOF
+