1 files changed, 189 insertions, 0 deletions
diff --git a/tests/include.sh b/tests/include.sh
new file mode 100644
index 0000000..33cabb4
--- /dev/null
+++ b/tests/include.sh
@@ -0,0 +1,189 @@
+cat <<'EOF' > header.h
+int add(int a, int b) {
+    return a + b;
+}
+
+int printf(const char*, ...);
+EOF
+
+cat <<'EOF' > expected
+8
+EOF
+test_diff <<'EOF'
+#include "header.h"
+
+int main() {
+    printf("%d\n", add(5, 3));
+    return 0;
+}
+EOF
+
+mkdir -p foo
+cat <<'EOF' > bar.h
+#include "baz.h"
+EOF
+cat <<'EOF' > baz.h
+#define A 123
+EOF
+cat <<'EOF' > foo/bar.h
+#include "baz.h"
+EOF
+cat <<'EOF' > foo/baz.h
+#define A 456
+EOF
+
+cat <<'EOF' > expected
+123
+456
+EOF
+test_diff <<'EOF'
+int printf(const char*, ...);
+
+int main() {
+#include "bar.h"
+    printf("%d\n", A);
+
+#undef A
+
+#include "foo/bar.h"
+    printf("%d\n", A);
+}
+EOF
+
+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
+
+test_diff <<'EOF'
+#include "calc.h"
+
+int main() {
+    printf("%d\n", calculate(6));
+    return 0;
+}
+EOF
+
+cat <<'EOF' > expected
+42
+EOF
+
+cat <<'EOF' > header.h
+#define A 42
+EOF
+
+test_diff <<'EOF'
+#include "header.h"
+
+int printf();
+
+int main() {
+    printf("%d\n", A);
+    return 0;
+}
+EOF
+
+cat <<'EOF' > expected
+42
+EOF
+
+cat <<'EOF' > header.h
+#ifndef HEADER_H
+#define HEADER_H
+
+int f() { return 42; }
+
+#endif
+EOF
+
+test_diff <<'EOF'
+#include "header.h"
+#include "header.h"
+#include "header.h"
+
+int printf();
+
+int main() {
+    printf("%d\n", HEADER_H HEADER_H HEADER_H f() HEADER_H HEADER_H HEADER_H);
+    return 0;
+}
+EOF
+
+cat <<'EOF' > expected
+main.c:1: cannot open include file: "nonexistent.h"
+EOF
+
+test_compile_error <<'EOF'
+#include "nonexistent.h"
+
+int main() {
+    return 0;
+}
+EOF
+
+cat <<'EOF' > expected
+include depth limit exceeded
+EOF
+
+# Create circular include files
+cat <<'EOF' > a.h
+#include "b.h"
+int a() { return 1; }
+EOF
+
+cat <<'EOF' > b.h
+#include "a.h"
+int b() { return 2; }
+EOF
+
+test_compile_error <<'EOF'
+#include "a.h"
+
+int main() {
+    a() + b();
+    return 0;
+}
+EOF
+
+cat <<'EOF' > expected
+main.c:1: cannot open include file: "hoge.h"
+EOF
+
+test_compile_error <<'EOF'
+#include "hoge.h"
+EOF
+
+cat <<'EOF' > expected
+main.c:1: cannot resolve include file name: <hoge.h>
+EOF
+
+test_compile_error <<'EOF'
+#include <hoge.h>
+EOF
+
+cat <<'EOF' > expected
+42
+EOF
+
+test_exit_code 0 <<'EOF'
+#ifdef FOO
+#include FOO
+#endif
+
+int main() { 1 < 2; }
+EOF