[PATCH 4/5] test GIT_WORK_TREE

@@ -0,0 +1,91 @@
+#!/bin/sh
+
+test_description='test GIT_WORK_TREE'
+. ./test-lib.sh
+
+export GIT_DIR=$(pwd)/repository
+export GIT_CONFIG="$GIT_DIR/config"
+top=$(pwd) || exit 1
+mv .git "$GIT_DIR" || exit 1
+mkdir -p working/tree || exit 1
+
+# test setup code and precedence of core.worktree, GIT_WORK_TREE and --work-tree
+test_expect_failure 'GIT_WORK_TREE=non-existent' \
+	'env GIT_WORK_TREE=non-existent git rev-parse'
+test_expect_success 'GIT_WORK_TREE=working/tree' \
+	'env GIT_WORK_TREE=working/tree git rev-parse'
+test_expect_success 'GIT_WORK_TREE=`pwd`/working/tree' \
+	'env GIT_WORK_TREE="$(pwd)"/working/tree git rev-parse'
+
+test_expect_success '--work-tree' \
+	'git --work-tree working/tree rev-parse'
+test_expect_success '--work-tree overrides GIT_WORK_TREE' \
+	'env GIT_WORK_TREE=non-existent git --work-tree working/tree rev-parse'
+
+test_expect_success 'core.worktree = non-existent' \
+	'git config core.worktree non-existent'
+test_expect_failure 'core.worktree' \
+	'git rev-parse'
+test_expect_success 'GIT_WORK_TREE overrides core.worktree' \
+	'env GIT_WORK_TREE=working/tree git rev-parse'
+test_expect_success '--work-tree overrides core.worktree' \
+	'git --work-tree working/tree rev-parse'
+
+test_expect_success 'core.worktree = `pwd`/working/tree' \
+	'git --work-tree . config core.worktree "$(pwd)"/working/tree'
+test_expect_success 'core.worktree' \
+	'git rev-parse'
+test_expect_success 'core.worktree = ../working/tree' \
+	'git --work-tree . config core.worktree ../working/tree'
+test_expect_success 'core.worktree' \
+	'git rev-parse'
+
+# outside of working tree
+test_expect_success 'outside: --is-bare-repository' \
+	'test "true" = "$(git rev-parse --is-bare-repository)"'
+
+# in toplevel working tree
+cd working/tree || exit 1
+test_expect_success 'inside: --is-bare-repository' \
+	'test "false" = "$(git rev-parse --is-bare-repository)"'
+test_expect_success 'inside: --is-inside-git-dir' \
+	'test "false" = "$(git rev-parse --is-inside-git-dir)"'
+test_expect_success 'inside: --show-prefix' \
+	'test "" = "$(git rev-parse --show-prefix)"'
+test_expect_success 'inside: --show-cdup' \
+	'test "" = "$(git rev-parse --show-cdup)"'
+
+# in subdirectory
+mkdir -p a/b || exit 1
+cd a/b || exit 1
+test_expect_success 'subdirectory: --is-bare-repository' \
+	'test "false" = "$(git rev-parse --is-bare-repository)"'
+test_expect_success 'subdirectory: --is-inside-git-dir' \
+	'test "false" = "$(git rev-parse --is-inside-git-dir)"'
+test_expect_success 'subdirectory: --show-prefix' \
+	'test "a/b/" = "$(git rev-parse --show-prefix)"'
+test_expect_success 'subdirectory: --show-cdup' \
+	'test "../../" = "$(git rev-parse --show-cdup)"'
+
+# in repository directory
+cd "$top/repository" || exit 1
+test_expect_success 'repository: --is-bare-repository' \
+	'test "true" = "$(git rev-parse --is-bare-repository)"'
+test_expect_success 'repository: --is-inside-git-dir' \
+	'test "true" = "$(git rev-parse --is-inside-git-dir)"'
+cd objects || exit 1
+test_expect_success 'repository/objects: --is-inside-git-dir' \
+	'test "true" = "$(git rev-parse --is-inside-git-dir)"'
+cd .. || exit 1
+
+# worktree is subdirectory of repository
+mkdir worktree || exit 1
+cd worktree || exit 1
+test_expect_success 'core.worktree = worktree' \
+	'git config core.worktree worktree'
+test_expect_success 'repository/worktree: --is-bare-repository' \
+	'test "false" = "$(git rev-parse --is-bare-repository)"'
+test_expect_success 'repository/worktree: --is-inside-git-dir' \
+	'test "false" = "$(git rev-parse --is-inside-git-dir)"'
+
+test_done