| 中文文章 | English article | Interactive demo |
这个实验创建一个临时 Git 仓库，并同时保留三类 Index 状态：
MM app.txt 一个 hunk 已暂存，另一个 hunk 仍在 Working Tree
UU conflict.txt Index 保存 stage 1、2、3
M settings.ini 修改只在 Working Tree
运行：
lab_path=$(bash setup.sh)
bash verify.sh "$lab_path"
bash cleanup.sh "$lab_path"
setup.sh 的标准输出只有临时仓库路径。verify.sh 会检查 HEAD、Index 和 Working Tree 中的 app.txt 内容，确认 git diff --cached 只包含选中的 hunk，并验证冲突 stages 的 base、ours、theirs 内容。cleanup.sh 只接受带有本实验标记的仓库路径。
一次运行完整自测：
bash test.sh
This lab creates a temporary Git repository and preserves three index states at once:
MM app.txt one hunk staged, another hunk still in the working tree
UU conflict.txt stages 1, 2, and 3 stored in the index
M settings.ini change present only in the working tree
Run:
lab_path=$(bash setup.sh)
bash verify.sh "$lab_path"
bash cleanup.sh "$lab_path"
The only standard output from setup.sh is the temporary repository path. verify.sh checks the app.txt content in HEAD, the index, and the working tree; confirms that git diff --cached contains only the selected hunk; and verifies the base, ours, and theirs content in the conflict stages. cleanup.sh accepts only a repository marked as belonging to this lab.
Run the full self-test with:
bash test.sh