read-cache: add post-index-change hook

diff --git a/t/t6500-gc.sh b/t/t6500-gc.sh
index 41b0be575d523071152c19a224a7ef914ce2ee1a..4684d06552ac2eeafff19cfd696fd36d20cef5d4 100755 (executable)
--- a/t/t6500-gc.sh
+++ b/t/t6500-gc.sh
@@ -4,6 +4,14 @@ test_description='basic git gc tests
 '
 
 . ./test-lib.sh
+. "$TEST_DIRECTORY"/lib-terminal.sh
+
+test_expect_success 'setup' '
+       # do not let the amount of physical memory affects gc
+       # behavior, make sure we always pack everything to one pack by
+       # default
+       git config gc.bigPackThreshold 2g
+'
 
 test_expect_success 'gc empty repository' '
        git gc
@@ -43,6 +51,31 @@ test_expect_success 'gc is not aborted due to a stale symref' '
        )
 '
 
+test_expect_success 'gc --keep-largest-pack' '
+       test_create_repo keep-pack &&
+       (
+               cd keep-pack &&
+               test_commit one &&
+               test_commit two &&
+               test_commit three &&
+               git gc &&
+               ( cd .git/objects/pack && ls *.pack ) >pack-list &&
+               test_line_count = 1 pack-list &&
+               BASE_PACK=.git/objects/pack/pack-*.pack &&
+               test_commit four &&
+               git repack -d &&
+               test_commit five &&
+               git repack -d &&
+               ( cd .git/objects/pack && ls *.pack ) >pack-list &&
+               test_line_count = 3 pack-list &&
+               git gc --keep-largest-pack &&
+               ( cd .git/objects/pack && ls *.pack ) >pack-list &&
+               test_line_count = 2 pack-list &&
+               test_path_is_file $BASE_PACK &&
+               git fsck
+       )
+'
+
 test_expect_success 'auto gc with too many loose objects does not attempt to create bitmaps' '
        test_config gc.auto 3 &&
        test_config gc.autodetach false &&
@@ -67,6 +100,26 @@ test_expect_success 'auto gc with too many loose objects does not attempt to cre
        test_line_count = 2 new # There is one new pack and its .idx
 '
 
+test_expect_success 'gc --no-quiet' '
+       git -c gc.writeCommitGraph=true gc --no-quiet >stdout 2>stderr &&
+       test_must_be_empty stdout &&
+       test_line_count = 1 stderr &&
+       test_i18ngrep "Computing commit graph generation numbers" stderr
+'
+
+test_expect_success TTY 'with TTY: gc --no-quiet' '
+       test_terminal git -c gc.writeCommitGraph=true gc --no-quiet >stdout 2>stderr &&
+       test_must_be_empty stdout &&
+       test_i18ngrep "Enumerating objects" stderr &&
+       test_i18ngrep "Computing commit graph generation numbers" stderr
+'
+
+test_expect_success 'gc --quiet' '
+       git -c gc.writeCommitGraph=true gc --quiet >stdout 2>stderr &&
+       test_must_be_empty stdout &&
+       test_must_be_empty stderr
+'
+
 run_and_wait_for_auto_gc () {
        # We read stdout from gc for the side effect of waiting until the
        # background gc process exits, closing its fd 9.  Furthermore, the
@@ -84,11 +137,11 @@ test_expect_success 'background auto gc does not run if gc.log is present and re
        test_config gc.autopacklimit 1 &&
        test_config gc.autodetach true &&
        echo fleem >.git/gc.log &&
-       test_must_fail git gc --auto 2>err &&
-       test_i18ngrep "^error:" err &&
+       git gc --auto 2>err &&
+       test_i18ngrep "^warning:" err &&
        test_config gc.logexpiry 5.days &&
-       test-chmtime =-345600 .git/gc.log &&
-       test_must_fail git gc --auto &&
+       test-tool chmtime =-345600 .git/gc.log &&
+       git gc --auto &&
        test_config gc.logexpiry 2.days &&
        run_and_wait_for_auto_gc &&
        ls .git/objects/pack/pack-*.pack >packs &&