worktree: add 'list' command

'git worktree list' iterates through the worktree list, and outputs
details of the worktree including the path to the worktree, the currently
checked out revision and branch, and if the work tree is bare.  There is
also porcelain format option available.

Signed-off-by: Michael Rappazzo <rappazzo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 89 insertions, 0 deletions

diff --git a/t/t2027-worktree-list.sh b/t/t2027-worktree-list.sh
new file mode 100755
index 0000000..75ebb1b
--- /dev/null
+++ b/t/t2027-worktree-list.sh
@@ -0,0 +1,89 @@
+#!/bin/sh
+
+test_description='test git worktree list'
+
+. ./test-lib.sh
+
+test_expect_success 'setup' '
+	test_commit init
+'
+
+test_expect_success '"list" all worktrees from main' '
+	echo "$(git rev-parse --show-toplevel) $(git rev-parse --short HEAD) [$(git symbolic-ref --short HEAD)]" >expect &&
+	test_when_finished "rm -rf here && git worktree prune" &&
+	git worktree add --detach here master &&
+	echo "$(git -C here rev-parse --show-toplevel) $(git rev-parse --short HEAD) (detached HEAD)" >>expect &&
+	git worktree list | sed "s/  */ /g" >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success '"list" all worktrees from linked' '
+	echo "$(git rev-parse --show-toplevel) $(git rev-parse --short HEAD) [$(git symbolic-ref --short HEAD)]" >expect &&
+	test_when_finished "rm -rf here && git worktree prune" &&
+	git worktree add --detach here master &&
+	echo "$(git -C here rev-parse --show-toplevel) $(git rev-parse --short HEAD) (detached HEAD)" >>expect &&
+	git -C here worktree list | sed "s/  */ /g" >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success '"list" all worktrees --porcelain' '
+	echo "worktree $(git rev-parse --show-toplevel)" >expect &&
+	echo "HEAD $(git rev-parse HEAD)" >>expect &&
+	echo "branch $(git symbolic-ref HEAD)" >>expect &&
+	echo >>expect &&
+	test_when_finished "rm -rf here && git worktree prune" &&
+	git worktree add --detach here master &&
+	echo "worktree $(git -C here rev-parse --show-toplevel)" >>expect &&
+	echo "HEAD $(git rev-parse HEAD)" >>expect &&
+	echo "detached" >>expect &&
+	echo >>expect &&
+	git worktree list --porcelain >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'bare repo setup' '
+	git init --bare bare1 &&
+	echo "data" >file1 &&
+	git add file1 &&
+	git commit -m"File1: add data" &&
+	git push bare1 master &&
+	git reset --hard HEAD^
+'
+
+test_expect_success '"list" all worktrees from bare main' '
+	test_when_finished "rm -rf there && git -C bare1 worktree prune" &&
+	git -C bare1 worktree add --detach ../there master &&
+	echo "$(pwd)/bare1 (bare)" >expect &&
+	echo "$(git -C there rev-parse --show-toplevel) $(git -C there rev-parse --short HEAD) (detached HEAD)" >>expect &&
+	git -C bare1 worktree list | sed "s/  */ /g" >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success '"list" all worktrees --porcelain from bare main' '
+	test_when_finished "rm -rf there && git -C bare1 worktree prune" &&
+	git -C bare1 worktree add --detach ../there master &&
+	echo "worktree $(pwd)/bare1" >expect &&
+	echo "bare" >>expect &&
+	echo >>expect &&
+	echo "worktree $(git -C there rev-parse --show-toplevel)" >>expect &&
+	echo "HEAD $(git -C there rev-parse HEAD)" >>expect &&
+	echo "detached" >>expect &&
+	echo >>expect &&
+	git -C bare1 worktree list --porcelain >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success '"list" all worktrees from linked with a bare main' '
+	test_when_finished "rm -rf there && git -C bare1 worktree prune" &&
+	git -C bare1 worktree add --detach ../there master &&
+	echo "$(pwd)/bare1 (bare)" >expect &&
+	echo "$(git -C there rev-parse --show-toplevel) $(git -C there rev-parse --short HEAD) (detached HEAD)" >>expect &&
+	git -C there worktree list | sed "s/  */ /g" >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'bare repo cleanup' '
+	rm -rf bare1
+'
+
+test_done