1 files changed, 26 insertions, 0 deletions
diff --git a/test/injected-test-dylib.c b/test/injected-test-dylib.c
new file mode 100644
index 0000000..9a92ff2
--- /dev/null
+++ b/test/injected-test-dylib.c
@@ -0,0 +1,26 @@
+#include "substitute-internal.h"
+#include <stdio.h>
+#include <mach/mach.h>
+#include <assert.h>
+__attribute__((constructor))
+static void hi() {
+    printf("constructor\n");
+}
+
+void substitute_init(struct shuttle *shuttle, size_t nshuttle) {
+    printf("substitute_init nshuttle=%zd\n", nshuttle);
+    assert(nshuttle == 1);
+    assert(shuttle[0].type == SUBSTITUTE_SHUTTLE_MACH_PORT);
+    struct {
+        mach_msg_header_t hdr;
+        char body[5];
+    } msg;
+    msg.hdr.msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, 0);
+    msg.hdr.msgh_size = sizeof(msg);
+    msg.hdr.msgh_remote_port = shuttle[0].u.mach.port;
+    msg.hdr.msgh_local_port = 0;
+    msg.hdr.msgh_voucher_port = 0;
+    msg.hdr.msgh_id = 42;
+    strncpy(msg.body, "hello", 5);
+    assert(!mach_msg_send(&msg.hdr));
+}