From 78bf67c0d30cbd121a34c9fee5def678f0c027e7 Mon Sep 17 00:00:00 2001
From: John Hawthorn <john.hawthorn@gmail.com>
Date: Sat, 27 Sep 2014 14:55:00 -0700
Subject: Raise SIGTRAP on all assertion failures

Makes it easy to run tests w/ gdb for debugging
---
 Makefile  |  4 ++--
 fzytest.c | 11 ++++++++++-
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index 7b3cead..4854fca 100644
--- a/Makefile
+++ b/Makefile
@@ -5,7 +5,7 @@ CFLAGS+=-Wall -Wextra -g -std=c99 -O3 -pedantic
 PREFIX?=/usr/local
 MANDIR?=$(PREFIX)/share/man
 BINDIR?=$(PREFIX)/bin
-VALGRIND?=
+DEBUGGER?=
 
 INSTALL=install
 INSTALL_PROGRAM=$(INSTALL)
@@ -17,7 +17,7 @@ fzytest: fzytest.o match.o choices.o
 	$(CC) $(CFLAGS) $(CCFLAGS) -o $@ $^
 
 test: fzytest
-	-$(VALGRIND) ./fzytest
+	-$(DEBUGGER) ./fzytest
 
 fzy: fzy.o match.o tty.o choices.o
 	$(CC) $(CFLAGS) $(CCFLAGS) -o $@ $^
diff --git a/fzytest.c b/fzytest.c
index 2c28fb5..ec81170 100644
--- a/fzytest.c
+++ b/fzytest.c
@@ -1,12 +1,13 @@
 #include <stdio.h>
 #include <string.h>
+#include <signal.h>
 
 #include "match.h"
 #include "choices.h"
 
 int testsrun = 0, testsfailed = 0, assertionsrun = 0;
 
-#define assert(x) if(++assertionsrun && !(x)){fprintf(stderr, "test \"%s\" failed\n   assert(%s) was false\n   at %s:%i\n\n", __func__, #x, __FILE__ ,__LINE__);testsfailed++;return;}
+#define assert(x) if(++assertionsrun && !(x)){fprintf(stderr, "test \"%s\" failed\n   assert(%s) was false\n   at %s:%i\n\n", __func__, #x, __FILE__ ,__LINE__);raise(SIGTRAP);testsfailed++;return;}
 
 #define assert_streq(a, b) assert(!strcmp(a, b))
 
@@ -216,10 +217,18 @@ void summary(){
 	printf("%i tests, %i assertions, %i failures\n", testsrun, assertionsrun, testsfailed);
 }
 
+static void ignore_signal(int signum){
+	(void) signum;
+}
+
 int main(int argc, char *argv[]){
 	(void) argc;
 	(void) argv;
 
+	/* We raise sigtrap on all assertion failures.
+	 * If we have no debugger running, we should ignore it */
+	signal(SIGTRAP, ignore_signal);
+
 	runtest(test_match);
 	runtest(test_scoring);
 	runtest(test_positions_1);
-- 
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