diff --git a/src/fish_test_helper.cpp b/src/fish_test_helper.cpp
index d8da3f6cc..009442579 100644
--- a/src/fish_test_helper.cpp
+++ b/src/fish_test_helper.cpp
@@ -156,6 +156,11 @@ static void sigkill_self() {
     abort();
 }
 
+static void sigint_self() {
+    kill(getpid(), SIGINT);
+    abort();
+}
+
 static void stdin_make_nonblocking() {
     const int fd = STDIN_FILENO;
     // Catch SIGCONT so pause() wakes us up.
@@ -203,6 +208,7 @@ static fth_command_t s_commands[] = {
     {"print_ignored_signals", print_ignored_signals,
      "Print to stdout the name(s) of ignored signals"},
     {"print_stop_cont", print_stop_cont, "Print when we get SIGTSTP and SIGCONT, exiting on input"},
+    {"sigint_self", sigint_self, "Send SIGINT to self"},
     {"sigkill_self", sigkill_self, "Send SIGKILL to self"},
     {"stdin_make_nonblocking", stdin_make_nonblocking,
      "Print if stdin is blocking and then make it nonblocking"},