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https://github.com/git/git
synced 2024-07-17 11:07:55 +00:00
49abcd21da
The previous change implemented the ahead_behind() method, including an algorithm to compute the ahead/behind values for a number of commit tips relative to a number of commit bases. Now, integrate that algorithm as part of 'git for-each-ref' hidden behind a new format atom, ahead-behind. This naturally extends to 'git branch' and 'git tag' builtins, as well. This format allows specifying multiple bases, if so desired, and all matching references are compared against all of those bases. For this reason, failing to read a reference provided from these atoms results in an error. In order to translate the ahead_behind() method information to the format output code in ref-filter.c, we must populate arrays of ahead_behind_count structs. In struct ref_array, we store the full array that will be passed to ahead_behind(). In struct ref_array_item, we store an array of pointers that point to the relvant items within the full array. In this way, we can pull all relevant ahead/behind values directly when formatting output for a specific item. It also ensures the lifetime of the ahead_behind_count structs matches the time that the array is being used. Add specific tests of the ahead/behind counts in t6600-test-reach.sh, as it has an interesting repository shape. In particular, its merging strategy and its use of different commit-graphs would demonstrate over- counting if the ahead_behind() method did not already account for that possibility. Also add tests for the specific for-each-ref, branch, and tag builtins. In the case of 'git tag', there are intersting cases that happen when some of the selected tips are not commits. This requires careful logic around commits_nr in the second loop of filter_ahead_behind(). Also, the test in t7004 is carefully located to avoid being dependent on the GPG prereq. It also avoids using the test_commit helper, as that will add ticks to the time and disrupt the expected timestamps in later tag tests. Also add performance tests in a new p1300-graph-walks.sh script. This will be useful for more uses in the future, but for now compare the ahead-behind counting algorithm in 'git for-each-ref' to the naive implementation by running 'git rev-list --count' processes for each input. For the Git source code repository, the improvement is already obvious: Test this tree --------------------------------------------------------------- 1500.2: ahead-behind counts: git for-each-ref 0.07(0.07+0.00) 1500.3: ahead-behind counts: git branch 0.07(0.06+0.00) 1500.4: ahead-behind counts: git tag 0.07(0.06+0.00) 1500.5: ahead-behind counts: git rev-list 1.32(1.04+0.27) But the standard performance benchmark is the Linux kernel repository, which demosntrates a significant improvement: Test this tree --------------------------------------------------------------- 1500.2: ahead-behind counts: git for-each-ref 0.27(0.24+0.02) 1500.3: ahead-behind counts: git branch 0.27(0.24+0.03) 1500.4: ahead-behind counts: git tag 0.28(0.27+0.01) 1500.5: ahead-behind counts: git rev-list 4.57(4.03+0.54) The 'git rev-list' test exists in this change as a demonstration, but it will be removed in the next change to avoid wasting time on this comparison. Signed-off-by: Derrick Stolee <derrickstolee@github.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
420 lines
9.8 KiB
Bash
Executable file
420 lines
9.8 KiB
Bash
Executable file
#!/bin/sh
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test_description='git branch display tests'
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. ./test-lib.sh
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. "$TEST_DIRECTORY"/lib-terminal.sh
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test_expect_success 'make commits' '
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echo content >file &&
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git add file &&
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git commit -m one &&
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git branch -M main &&
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echo content >>file &&
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git commit -a -m two
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'
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test_expect_success 'make branches' '
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git branch branch-one &&
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git branch branch-two HEAD^
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'
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test_expect_success 'make remote branches' '
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git update-ref refs/remotes/origin/branch-one branch-one &&
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git update-ref refs/remotes/origin/branch-two branch-two &&
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git symbolic-ref refs/remotes/origin/HEAD refs/remotes/origin/branch-one
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'
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cat >expect <<'EOF'
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branch-one
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branch-two
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* main
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EOF
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test_expect_success 'git branch shows local branches' '
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git branch >actual &&
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test_cmp expect actual
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'
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test_expect_success 'git branch --list shows local branches' '
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git branch --list >actual &&
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test_cmp expect actual
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'
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cat >expect <<'EOF'
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branch-one
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branch-two
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EOF
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test_expect_success 'git branch --list pattern shows matching local branches' '
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git branch --list branch* >actual &&
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test_cmp expect actual
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'
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cat >expect <<'EOF'
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origin/HEAD -> origin/branch-one
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origin/branch-one
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origin/branch-two
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EOF
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test_expect_success 'git branch -r shows remote branches' '
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git branch -r >actual &&
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test_cmp expect actual
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'
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cat >expect <<'EOF'
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branch-one
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branch-two
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* main
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remotes/origin/HEAD -> origin/branch-one
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remotes/origin/branch-one
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remotes/origin/branch-two
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EOF
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test_expect_success 'git branch -a shows local and remote branches' '
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git branch -a >actual &&
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test_cmp expect actual
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'
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cat >expect <<'EOF'
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two
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one
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two
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EOF
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test_expect_success 'git branch -v shows branch summaries' '
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git branch -v >tmp &&
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awk "{print \$NF}" <tmp >actual &&
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test_cmp expect actual
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'
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cat >expect <<'EOF'
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two
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one
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EOF
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test_expect_success 'git branch --list -v pattern shows branch summaries' '
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git branch --list -v branch* >tmp &&
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awk "{print \$NF}" <tmp >actual &&
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test_cmp expect actual
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'
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test_expect_success 'git branch --ignore-case --list -v pattern shows branch summaries' '
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git branch --list --ignore-case -v BRANCH* >tmp &&
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awk "{print \$NF}" <tmp >actual &&
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test_cmp expect actual
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'
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test_expect_success 'git branch -v pattern does not show branch summaries' '
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test_must_fail git branch -v branch*
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'
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test_expect_success 'git branch `--show-current` shows current branch' '
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cat >expect <<-\EOF &&
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branch-two
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EOF
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git checkout branch-two &&
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git branch --show-current >actual &&
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test_cmp expect actual
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'
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test_expect_success 'git branch `--show-current` is silent when detached HEAD' '
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git checkout HEAD^0 &&
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git branch --show-current >actual &&
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test_must_be_empty actual
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'
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test_expect_success 'git branch `--show-current` works properly when tag exists' '
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cat >expect <<-\EOF &&
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branch-and-tag-name
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EOF
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test_when_finished "
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git checkout branch-one
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git branch -D branch-and-tag-name
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" &&
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git checkout -b branch-and-tag-name &&
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test_when_finished "git tag -d branch-and-tag-name" &&
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git tag branch-and-tag-name &&
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git branch --show-current >actual &&
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test_cmp expect actual
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'
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test_expect_success 'git branch `--show-current` works properly with worktrees' '
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cat >expect <<-\EOF &&
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branch-one
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branch-two
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EOF
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git checkout branch-one &&
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test_when_finished "
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git worktree remove worktree_dir
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" &&
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git worktree add worktree_dir branch-two &&
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{
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git branch --show-current &&
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git -C worktree_dir branch --show-current
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} >actual &&
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test_cmp expect actual
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'
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test_expect_success 'git branch shows detached HEAD properly' '
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cat >expect <<EOF &&
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* (HEAD detached at $(git rev-parse --short HEAD^0))
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branch-one
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branch-two
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main
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EOF
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git checkout HEAD^0 &&
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git branch >actual &&
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test_cmp expect actual
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'
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test_expect_success 'git branch shows detached HEAD properly after checkout --detach' '
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git checkout main &&
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cat >expect <<EOF &&
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* (HEAD detached at $(git rev-parse --short HEAD^0))
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branch-one
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branch-two
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main
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EOF
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git checkout --detach &&
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git branch >actual &&
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test_cmp expect actual
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'
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test_expect_success 'git branch shows detached HEAD properly after moving' '
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cat >expect <<EOF &&
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* (HEAD detached from $(git rev-parse --short HEAD))
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branch-one
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branch-two
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main
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EOF
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git reset --hard HEAD^1 &&
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git branch >actual &&
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test_cmp expect actual
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'
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test_expect_success 'git branch shows detached HEAD properly from tag' '
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cat >expect <<EOF &&
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* (HEAD detached at fromtag)
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branch-one
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branch-two
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main
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EOF
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git tag fromtag main &&
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git checkout fromtag &&
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git branch >actual &&
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test_cmp expect actual
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'
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test_expect_success 'git branch shows detached HEAD properly after moving from tag' '
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cat >expect <<EOF &&
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* (HEAD detached from fromtag)
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branch-one
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branch-two
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main
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EOF
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git reset --hard HEAD^1 &&
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git branch >actual &&
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test_cmp expect actual
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'
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test_expect_success 'git branch `--sort=[-]objectsize` option' '
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cat >expect <<-\EOF &&
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* (HEAD detached from fromtag)
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branch-two
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branch-one
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main
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EOF
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git branch --sort=objectsize >actual &&
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test_cmp expect actual &&
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cat >expect <<-\EOF &&
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* (HEAD detached from fromtag)
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branch-one
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main
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branch-two
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EOF
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git branch --sort=-objectsize >actual &&
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test_cmp expect actual
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'
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test_expect_success 'git branch `--sort=[-]type` option' '
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cat >expect <<-\EOF &&
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* (HEAD detached from fromtag)
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branch-one
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branch-two
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main
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EOF
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git branch --sort=type >actual &&
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test_cmp expect actual &&
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cat >expect <<-\EOF &&
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* (HEAD detached from fromtag)
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branch-one
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branch-two
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main
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EOF
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git branch --sort=-type >actual &&
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test_cmp expect actual
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'
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test_expect_success 'git branch `--sort=[-]version:refname` option' '
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cat >expect <<-\EOF &&
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* (HEAD detached from fromtag)
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branch-one
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branch-two
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main
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EOF
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git branch --sort=version:refname >actual &&
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test_cmp expect actual &&
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cat >expect <<-\EOF &&
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* (HEAD detached from fromtag)
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main
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branch-two
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branch-one
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EOF
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git branch --sort=-version:refname >actual &&
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test_cmp expect actual
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'
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test_expect_success 'git branch --points-at option' '
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cat >expect <<-\EOF &&
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branch-one
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main
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EOF
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git branch --points-at=branch-one >actual &&
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test_cmp expect actual
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'
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test_expect_success 'ambiguous branch/tag not marked' '
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git tag ambiguous &&
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git branch ambiguous &&
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echo " ambiguous" >expect &&
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git branch --list ambiguous >actual &&
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test_cmp expect actual
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'
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test_expect_success 'local-branch symrefs shortened properly' '
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git symbolic-ref refs/heads/ref-to-branch refs/heads/branch-one &&
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git symbolic-ref refs/heads/ref-to-remote refs/remotes/origin/branch-one &&
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cat >expect <<-\EOF &&
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ref-to-branch -> branch-one
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ref-to-remote -> origin/branch-one
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EOF
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git branch >actual.raw &&
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grep ref-to <actual.raw >actual &&
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test_cmp expect actual
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'
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test_expect_success 'sort branches, ignore case' '
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(
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git init -b main sort-icase &&
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cd sort-icase &&
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test_commit initial &&
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git branch branch-one &&
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git branch BRANCH-two &&
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git branch --list | awk "{print \$NF}" >actual &&
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cat >expected <<-\EOF &&
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BRANCH-two
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branch-one
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main
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EOF
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test_cmp expected actual &&
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git branch --list -i | awk "{print \$NF}" >actual &&
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cat >expected <<-\EOF &&
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branch-one
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BRANCH-two
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main
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EOF
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test_cmp expected actual
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)
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'
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test_expect_success 'git branch --format option' '
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cat >expect <<-\EOF &&
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Refname is (HEAD detached from fromtag)
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Refname is refs/heads/ambiguous
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Refname is refs/heads/branch-one
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Refname is refs/heads/branch-two
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Refname is refs/heads/main
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Refname is refs/heads/ref-to-branch
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Refname is refs/heads/ref-to-remote
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EOF
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git branch --format="Refname is %(refname)" >actual &&
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test_cmp expect actual
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'
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test_expect_success 'git branch --format with ahead-behind' '
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cat >expect <<-\EOF &&
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(HEAD detached from fromtag) 0 0
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refs/heads/ambiguous 0 0
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refs/heads/branch-one 1 0
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refs/heads/branch-two 0 0
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refs/heads/main 1 0
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refs/heads/ref-to-branch 1 0
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refs/heads/ref-to-remote 1 0
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EOF
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git branch --format="%(refname) %(ahead-behind:HEAD)" >actual &&
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test_cmp expect actual
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'
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test_expect_success 'git branch with --format=%(rest) must fail' '
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test_must_fail git branch --format="%(rest)" >actual
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'
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test_expect_success 'worktree colors correct' '
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cat >expect <<-EOF &&
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* <GREEN>(HEAD detached from fromtag)<RESET>
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ambiguous<RESET>
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branch-one<RESET>
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+ <CYAN>branch-two<RESET>
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main<RESET>
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ref-to-branch<RESET> -> branch-one
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ref-to-remote<RESET> -> origin/branch-one
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EOF
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git worktree add worktree_dir branch-two &&
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git branch --color >actual.raw &&
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rm -r worktree_dir &&
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git worktree prune &&
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test_decode_color <actual.raw >actual &&
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test_cmp expect actual
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'
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test_expect_success "set up color tests" '
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echo "<RED>main<RESET>" >expect.color &&
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echo "main" >expect.bare &&
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color_args="--format=%(color:red)%(refname:short) --list main"
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'
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test_expect_success '%(color) omitted without tty' '
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TERM=vt100 git branch $color_args >actual.raw &&
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test_decode_color <actual.raw >actual &&
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test_cmp expect.bare actual
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'
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test_expect_success TTY '%(color) present with tty' '
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test_terminal git branch $color_args >actual.raw &&
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test_decode_color <actual.raw >actual &&
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test_cmp expect.color actual
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'
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test_expect_success '--color overrides auto-color' '
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git branch --color $color_args >actual.raw &&
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test_decode_color <actual.raw >actual &&
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test_cmp expect.color actual
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'
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test_expect_success 'verbose output lists worktree path' '
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one=$(git rev-parse --short HEAD) &&
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two=$(git rev-parse --short main) &&
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cat >expect <<-EOF &&
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* (HEAD detached from fromtag) $one one
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ambiguous $one one
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branch-one $two two
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+ branch-two $one ($(pwd)/worktree_dir) one
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main $two two
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ref-to-branch $two two
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ref-to-remote $two two
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EOF
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git worktree add worktree_dir branch-two &&
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git branch -vv >actual &&
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rm -r worktree_dir &&
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git worktree prune &&
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test_cmp expect actual
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'
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test_done
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