tests: allow user to specify trash directory location

The tests generate a large amount of I/O activity creating and destroying repositories and files. We can improve the time it takes to run the test suite by creating trash directories on filesystems with better performance characteristic, even though we may not want the rest of the git repository on those filesystems (e.g., because they are not network connected, or because they are temporary ramdisks). For example, on a dual processor system: $ cd t && time make -j32 real 1m51.562s user 0m59.260s sys 1m20.933s # /dev/shm is tmpfs $ cd t && time make -j32 GIT_TEST_OPTS="--root=/dev/shm" real 1m1.484s user 0m53.555s sys 1m5.264s We almost halve the wall clock time, and we utilize the dual processors much better. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Jeff King committed Aug 9, 2009 at 04:39 UTC f423ef5f2bec35efbc328f02e468a18612970242

1 file changed +8 -1

t/test-lib.sh

+8 -1

@@ -114,6 +114,9 @@ do

114 valgrind=t; verbose=t; shift ;;

115 --tee)

116 shift ;; # was handled already

117 + --root=*)

118 + root=$(expr "z$1" : 'z[^=]*=$.*$')

119 + shift ;;

120 *)

121 echo "error: unknown test option '$1'" >&2; exit 1 ;;

122 esac

@@ -645,7 +648,11 @@ fi

648

649 # Test repository

650 test="trash directory.$(basename "$0" .sh)"

648 -TRASH_DIRECTORY="$TEST_DIRECTORY/$test"

651 +test -n "$root" && test="$root/$test"

652 +case "$test" in

653 +/*) TRASH_DIRECTORY="$test" ;;

654 + *) TRASH_DIRECTORY="$TEST_DIRECTORY/$test" ;;

655 +esac

656 test ! -z "$debug" || remove_trash=$TRASH_DIRECTORY

657 rm -fr "$test" || {

658 GIT_EXIT_OK=t