From a49402c53a99e6ab58c20921c80603d777666db4 Mon Sep 17 00:00:00 2001
From: Stephen Dolan <mu@netsoc.tcd.ie>
Date: Sun, 5 May 2013 22:53:45 +0100
Subject: [PATCH] Combine the functionality of jq and jq_test

One binary is much simpler. ./jq --run-tests now runs the tests.
---
 Makefile  | 6 +++---
 jq_test.c | 3 ++-
 main.c    | 6 ++++++
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/Makefile b/Makefile
index aa2cc133..45f8ea75 100644
--- a/Makefile
+++ b/Makefile
@@ -27,15 +27,15 @@ main.c: version.gen.h
 JQ_SRC=parser.gen.c lexer.gen.c opcode.c bytecode.c compile.c execute.c builtin.c jv.c jv_parse.c jv_print.c jv_dtoa.c jv_unicode.c jv_aux.c jv_alloc.c
 
 jq_test: CFLAGS += -DJQ_DEBUG=1
-jq_test: $(JQ_SRC) jq_test.c
+jq_test: $(JQ_SRC) main.c jq_test.c
 	$(CC) $(CFLAGS) $(CFLAGS_DEBUG) -o $@ $^
 
 jq: CFLAGS += -O -DJQ_DEBUG=0
-jq: $(JQ_SRC) main.c
+jq: $(JQ_SRC) main.c jq_test.c
 	$(CC) $(CFLAGS) $(CFLAGS_OPT) -o $@ $^
 
 test: jq_test
-	valgrind --error-exitcode=1 -q --leak-check=full ./jq_test >/dev/null
+	valgrind --error-exitcode=1 -q --leak-check=full ./jq_test --run-tests >/dev/null
 
 LIBRARIES=libjq
 BINARIES=jq jq_test
diff --git a/jq_test.c b/jq_test.c
index 8b5ee2c2..cbcbd8f5 100644
--- a/jq_test.c
+++ b/jq_test.c
@@ -10,7 +10,7 @@ static void run_jq_tests();
 
 FILE* testdata;
 
-int main(int argc, char* argv[]) {
+int jq_testsuite(int argc, char* argv[]) {
   jv_test();
   if (argc == 1) {
     testdata = fopen("testdata", "r");
@@ -26,6 +26,7 @@ int main(int argc, char* argv[]) {
   }
   run_jq_tests();
   if (testdata != stdin) fclose(testdata);
+  return 0;
 }
 
 
diff --git a/main.c b/main.c
index ac80e4d0..06466d4e 100644
--- a/main.c
+++ b/main.c
@@ -11,6 +11,8 @@
 #include "jv_alloc.h"
 #include "version.gen.h"
 
+int jq_testsuite(int argc, char* argv[]);
+
 static const char* progname;
 
 static void usage() {
@@ -140,6 +142,10 @@ static int read_more(char* buf, size_t size) {
 int main(int argc, char* argv[]) {
   if (argc) progname = argv[0];
 
+  if (argc > 1 && !strcmp(argv[1], "--run-tests")) {
+    return jq_testsuite(argc - 1, argv + 1);
+  }
+
   const char* program = 0;
   input_filenames = jv_mem_alloc(sizeof(const char*) * argc);
   ninput_files = 0;