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-rwxr-xr-xt/t1415-worktree-refs.sh79
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diff --git a/t/t1415-worktree-refs.sh b/t/t1415-worktree-refs.sh
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+#!/bin/sh
+
+test_description='per-worktree refs'
+
+. ./test-lib.sh
+
+test_expect_success 'setup' '
+ test_commit initial &&
+ test_commit wt1 &&
+ test_commit wt2 &&
+ git worktree add wt1 wt1 &&
+ git worktree add wt2 wt2 &&
+ git checkout initial &&
+ git update-ref refs/worktree/foo HEAD &&
+ git -C wt1 update-ref refs/worktree/foo HEAD &&
+ git -C wt2 update-ref refs/worktree/foo HEAD
+'
+
+test_expect_success 'refs/worktree must not be packed' '
+ git pack-refs --all &&
+ test_path_is_missing .git/refs/tags/wt1 &&
+ test_path_is_file .git/refs/worktree/foo &&
+ test_path_is_file .git/worktrees/wt1/refs/worktree/foo &&
+ test_path_is_file .git/worktrees/wt2/refs/worktree/foo
+'
+
+test_expect_success 'refs/worktree are per-worktree' '
+ test_cmp_rev worktree/foo initial &&
+ ( cd wt1 && test_cmp_rev worktree/foo wt1 ) &&
+ ( cd wt2 && test_cmp_rev worktree/foo wt2 )
+'
+
+test_expect_success 'resolve main-worktree/HEAD' '
+ test_cmp_rev main-worktree/HEAD initial &&
+ ( cd wt1 && test_cmp_rev main-worktree/HEAD initial ) &&
+ ( cd wt2 && test_cmp_rev main-worktree/HEAD initial )
+'
+
+test_expect_success 'ambiguous main-worktree/HEAD' '
+ mkdir -p .git/refs/heads/main-worktree &&
+ test_when_finished rm -f .git/refs/heads/main-worktree/HEAD &&
+ cp .git/HEAD .git/refs/heads/main-worktree/HEAD &&
+ git rev-parse main-worktree/HEAD 2>warn &&
+ grep "main-worktree/HEAD.*ambiguous" warn
+'
+
+test_expect_success 'resolve worktrees/xx/HEAD' '
+ test_cmp_rev worktrees/wt1/HEAD wt1 &&
+ ( cd wt1 && test_cmp_rev worktrees/wt1/HEAD wt1 ) &&
+ ( cd wt2 && test_cmp_rev worktrees/wt1/HEAD wt1 )
+'
+
+test_expect_success 'ambiguous worktrees/xx/HEAD' '
+ mkdir -p .git/refs/heads/worktrees/wt1 &&
+ test_when_finished rm -f .git/refs/heads/worktrees/wt1/HEAD &&
+ cp .git/HEAD .git/refs/heads/worktrees/wt1/HEAD &&
+ git rev-parse worktrees/wt1/HEAD 2>warn &&
+ grep "worktrees/wt1/HEAD.*ambiguous" warn
+'
+
+test_expect_success 'reflog of main-worktree/HEAD' '
+ git reflog HEAD | sed "s/HEAD/main-worktree\/HEAD/" >expected &&
+ git reflog main-worktree/HEAD >actual &&
+ test_cmp expected actual &&
+ git -C wt1 reflog main-worktree/HEAD >actual.wt1 &&
+ test_cmp expected actual.wt1
+'
+
+test_expect_success 'reflog of worktrees/xx/HEAD' '
+ git -C wt2 reflog HEAD | sed "s/HEAD/worktrees\/wt2\/HEAD/" >expected &&
+ git reflog worktrees/wt2/HEAD >actual &&
+ test_cmp expected actual &&
+ git -C wt1 reflog worktrees/wt2/HEAD >actual.wt1 &&
+ test_cmp expected actual.wt1 &&
+ git -C wt2 reflog worktrees/wt2/HEAD >actual.wt2 &&
+ test_cmp expected actual.wt2
+'
+
+test_done