The commit-graph (and multi-pack-index) features are optional data structures that can make Git operations faster. Since they are optional, we do not enable them in most Git tests. The commit-graph is tested in t5318-commit-graph.sh (and t6600-test-reach.sh in ds/reachable), but that one script cannot cover the data shapes present in the rest of the test suite. This patch introduces a new test environment variable, GIT_TEST_COMMIT_GRAPH . Similar to GIT_TEST_SPLIT_INDEX, it enables the commit-graph and writes it with every git commit command. Thanks, Duy, for pointing out this direction [1]. A few tests needed to be modified. These are the same tests that were mentioned in my previous example patch [2]. When this merges down, I'll create a CI build in VSTS that runs the test suite with this option enabled. Thanks, -Stolee [1] https://public-inbox.org/git/CACsJy8CKnXVJYkKM_W=N=Vq-TVXf+YCqZP_uP7B-dN_6xddB=g@xxxxxxxxxxxxxx/ Re: [PATCH 0/9] multi-pack-index cleanups (Discussing test environment variables) [2] https://public-inbox.org/git/20180718152244.45513-1-dstolee@xxxxxxxxxxxxx/ [PATCH] DO-NOT-MERGE: write and read commit-graph always Based-On: ds/commit-graph-with-grafts Cc: jnareb@xxxxxxxxx Derrick Stolee (1): commit-graph: define GIT_TEST_COMMIT_GRAPH builtin/commit.c | 4 ++++ commit-graph.c | 5 +++-- commit-graph.h | 2 ++ t/README | 4 ++++ t/t0410-partial-clone.sh | 2 +- t/t5307-pack-missing-commit.sh | 10 ++++++++-- t/t6011-rev-list-with-bad-commit.sh | 10 ++++++---- t/t6024-recursive-merge.sh | 9 ++++++--- 8 files changed, 34 insertions(+), 12 deletions(-) base-commit: 829a321569d8e8f2c582aef9f0c990df976ab842 Published-As: https://github.com/gitgitgadget/git/releases/tags/pr-26%2Fderrickstolee%2Fshallow%2Ftest-v1 Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-26/derrickstolee/shallow/test-v1 Pull-Request: https://github.com/gitgitgadget/git/pull/26 -- gitgitgadget