environment override for tests directory
diff --git a/libasn1fix/check_fixer.c b/libasn1fix/check_fixer.c
index ff4d19c..4a616e0 100644
--- a/libasn1fix/check_fixer.c
+++ b/libasn1fix/check_fixer.c
@@ -58,9 +58,14 @@
* Go into a directory with tests.
*/
if(ac <= 1) {
- fprintf(stderr, "Testing in " TOP_SRCDIR_S "/tests...\n");
- ret = chdir(TOP_SRCDIR_S "/tests");
- assert(ret == 0);
+ const char *asn1_tests_dir = getenv("ASN1_TESTS_DIR");
+ if(!asn1_tests_dir)
+ asn1_tests_dir = TOP_SRCDIR_S "/tests";
+ fprintf(stderr, "Testing in %s...\n", asn1_tests_dir);
+ ret = chdir(asn1_tests_dir);
+ if(ret == -1)
+ fprintf(stderr, "%s: %s\n", asn1_tests_dir, strerror(errno));
+ assert(ret == 0);
#ifdef _WIN32
dir = _findfirst("*.asn1", &c_file);
assert(dir != -1L);