test-lib: check for leak logs after every test

If you are trying to find and fix leaks in a large test script, it can
be overwhelming to see the leak logs for every test at once. The
previous commit let you use "--immediate" to see the logs after the
first failing test, but this isn't always the first leak. As discussed
there, we may see leaks from previous tests that didn't happen to fail.

To catch those, let's check for any logs that appeared after each test
snippet is run, meaning that in a SANITIZE=leak build, any leak is an
immediate failure of the test snippet.

This check is mostly free in non-leak builds (just a "test -z"), and
only a few extra processes in a leak build, so I don't think the
overhead should matter (if it does, we could probably optimize for the
common "no logs" case without even spending a process).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/test-lib-functions.sh b/t/test-lib-functions.sh
index fde9bf5..78e054a 100644 (file)
--- a/t/test-lib-functions.sh
+++ b/t/test-lib-functions.sh
@@ -926,7 +926,8 @@ test_expect_success () {
                test_body_or_stdin test_body "$2"
                test -n "$test_skip_test_preamble" ||
                say >&3 "expecting success of $TEST_NUMBER.$test_count '$1': $test_body"
-               if test_run_ "$test_body"
+               if test_run_ "$test_body" &&
+                  check_test_results_san_file_empty_
                then
                        test_ok_ "$1"
                else

diff --git a/t/test-lib.sh b/t/test-lib.sh
index d624ee1..b1a8ee5 100644 (file)
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -1215,12 +1215,13 @@ test_atexit_handler () {
        teardown_malloc_check
 }
 
+check_test_results_san_file_empty_ () {
+       test -z "$TEST_RESULTS_SAN_FILE" ||
+       test "$(nr_san_dir_leaks_)" = 0
+}
+
 check_test_results_san_file_ () {
-       if test -z "$TEST_RESULTS_SAN_FILE"
-       then
-               return
-       fi &&
-       if test "$(nr_san_dir_leaks_)" = 0
+       if check_test_results_san_file_empty_
        then
                return
        fi &&