Merge branch 'jk/rev-list-disk-usage'

[thirdparty/git.git] / t / t6115-rev-list-du.sh

diff --git a/t/t6115-rev-list-du.sh b/t/t6115-rev-list-du.sh
new file mode 100755 (executable)
index 0000000..b4aef32
--- /dev/null
+++ b/t/t6115-rev-list-du.sh
@@ -0,0 +1,51 @@
+#!/bin/sh
+
+test_description='basic tests of rev-list --disk-usage'
+. ./test-lib.sh
+
+# we want a mix of reachable and unreachable, as well as
+# objects in the bitmapped pack and some outside of it
+test_expect_success 'set up repository' '
+       test_commit --no-tag one &&
+       test_commit --no-tag two &&
+       git repack -adb &&
+       git reset --hard HEAD^ &&
+       test_commit --no-tag three &&
+       test_commit --no-tag four &&
+       git reset --hard HEAD^
+'
+
+# We don't want to hardcode sizes, because they depend on the exact details of
+# packing, zlib, etc. We'll assume that the regular rev-list and cat-file
+# machinery works and compare the --disk-usage output to that.
+disk_usage_slow () {
+       git rev-list --no-object-names "$@" |
+       git cat-file --batch-check="%(objectsize:disk)" |
+       perl -lne '$total += $_; END { print $total}'
+}
+
+# check behavior with given rev-list options; note that
+# whitespace is not preserved in args
+check_du () {
+       args=$*
+
+       test_expect_success "generate expected size ($args)" "
+               disk_usage_slow $args >expect
+       "
+
+       test_expect_success "rev-list --disk-usage without bitmaps ($args)" "
+               git rev-list --disk-usage $args >actual &&
+               test_cmp expect actual
+       "
+
+       test_expect_success "rev-list --disk-usage with bitmaps ($args)" "
+               git rev-list --disk-usage --use-bitmap-index $args >actual &&
+               test_cmp expect actual
+       "
+}
+
+check_du HEAD
+check_du --objects HEAD
+check_du --objects HEAD^..HEAD
+
+test_done