test-lib: Don't write test-results when HARNESS_ACTIVE

TAP harnesses don't need to read test-results/*, since they keep track
of the number of passing/failing tests internally. Skip the generation
of these files when HARNESS_ACTIVE is set.

It's now possible to run the Git test suite without writing anything
to the t/ directory at all if you use a TAP harness and the --root
switch:

cd t
sudo mount -t tmpfs none /tmp/memory -o size=300m
prove -j9 ./t[0-9]*.sh :: --root=/tmp/memory

The I/O that the ~500 test-results/* files contributed was very
minimal, but I thought this was worth mentioning.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/test-lib.sh b/t/test-lib.sh
index e8f21d577ce4da474e2a9545a667ff5dc6dc145f..5467cc626b09b9fa02b07264e6e7a99c50b0ac8a 100644 (file)
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -633,16 +633,19 @@ test_create_repo () {
 
 test_done () {
        GIT_EXIT_OK=t
-       test_results_dir="$TEST_DIRECTORY/test-results"
-       mkdir -p "$test_results_dir"
-       test_results_path="$test_results_dir/${0%.sh}-$$.counts"
-
-       echo "total $test_count" >> $test_results_path
-       echo "success $test_success" >> $test_results_path
-       echo "fixed $test_fixed" >> $test_results_path
-       echo "broken $test_broken" >> $test_results_path
-       echo "failed $test_failure" >> $test_results_path
-       echo "" >> $test_results_path
+
+       if test -z "$HARNESS_ACTIVE"; then
+               test_results_dir="$TEST_DIRECTORY/test-results"
+               mkdir -p "$test_results_dir"
+               test_results_path="$test_results_dir/${0%.sh}-$$.counts"
+
+               echo "total $test_count" >> $test_results_path
+               echo "success $test_success" >> $test_results_path
+               echo "fixed $test_fixed" >> $test_results_path
+               echo "broken $test_broken" >> $test_results_path
+               echo "failed $test_failure" >> $test_results_path
+               echo "" >> $test_results_path
+       fi
 
        if test "$test_fixed" != 0
        then