test-str-source: Return nonzero status if a test case fails.

tests/test-str-source.c

@@ -116,28 +116,40 @@ free_str_source(tre_str_source *s)
 }
 
 /* Run one test with tre_reguexec */
-static void
+static int
 test_reguexec(const char *str, const char *regex)
 {
   regex_t preg;
   tre_str_source *source;
   regmatch_t pmatch[5];
+  int ret = 0;
 
   source = make_str_source(str);
   if (!source)
-    return;
+    return 1;
 
   tre_regcomp(&preg, regex, REG_EXTENDED);
   if (tre_reguexec(&preg, source, elementsof(pmatch), pmatch, 0) == 0)
-    fprintf(outf, "Match: %d - %d\n", (int)pmatch[0].rm_so, (int)pmatch[0].rm_eo);
+    {
+      fprintf(outf, "Match: /%s/ matches \"%.*s\" in \"%s\"\n", regex,
+	      (int)(pmatch[0].rm_eo - pmatch[0].rm_so), str + pmatch[0].rm_so,
+	      str);
+    }
+  else
+    {
+      fprintf(outf, "No match: /%s/ in \"%s\"\n", regex, str);
+      ret = 1;
+    }
 
   free_str_source(source);
   tre_regfree(&preg);
+  return ret;
 }
 
 int
 main(int argc, char **argv)
 {
+  int ret = 0;
   outf = stdout;
 #if defined(HAVE_UNISTD_H) || defined(HAVE_GETOPT_H)
   int opt;
@@ -158,11 +170,11 @@ main(int argc, char **argv)
 	}
     }
 #endif
-  test_reguexec("xfoofofoofoo","(foo)\\1");
-  test_reguexec("catcat","(cat|dog)\\1");
-  test_reguexec("catdog","(cat|dog)\\1");
-  test_reguexec("dogdog","(cat|dog)\\1");
-  test_reguexec("dogcat","(cat|dog)\\1");
+  ret += test_reguexec("xfoofofoofoo", "(foo)\\1");
+  ret += test_reguexec("catcat", "(cat|dog)\\1");
+  ret += !test_reguexec("catdog", "(cat|dog)\\1");
+  ret += test_reguexec("dogdog", "(cat|dog)\\1");
+  ret += !test_reguexec("dogcat", "(cat|dog)\\1");
 
-  return 0;
+  return ret;
 }