Check a change for whitespace problems.
Git: Check a change for whitespace problems inside the disposable repository created by the input setup.
printf 'second\n' >> lesson.txt
git diff --check
printf 'Whitespace check passed\n'Expected output EXAMPLE
Whitespace check passed
Details
Requires Git and Bash. Run in a disposable practice repository. The test setup below creates the starting files and commits.
Use a disposable practice directory. The setup configures a synthetic author locally for this repository only; it does not change global Git settings.
Tested on Ubuntu 24.04.5 LTS · · git version 2.43.0 · bash 5.2.21-2ubuntu4; coreutils 9.4-3ubuntu6.3
Test inputs, results and environment
The exact published code ran in a dedicated Linux test container with prepared inputs. Snippet process uid 65534 with a read-only root filesystem and temporary working files. Networking disabled. Fixtures and output records are isolated from the application database. Testing covers this example and its stated checks, not every input, operating system, or runtime version. The Linux container shares its host's kernel; this is not a native Windows test.
- Architecture / host kernel
- x86_64 / 6.18.54.1-microsoft-standard-WSL2
- Snippet identity / locale
- uid=65534, gid=65534 (unprivileged process) / C.UTF-8
- Interpreter invocation
bash -euo pipefail -c <published code>- Container image ID
sha256:ec91410a8f6ec3e985830b5e3a0560306d36f8c1c5ccd91a6699abe707123fa3- Code SHA-256
31b4cb0eb1355a116f6df01283aff09c60ecd0a38b84073bcd87d373afe0ee29- Dependencies
- bash 5.2.21-2ubuntu4; coreutils 9.4-3ubuntu6.3
Test input setup
These are the prepared inputs used by the test harness. See Details above for the prerequisites and how to run this example.
git init -q -b main git config user.name 'Practice User' git config user.email 'learner@example.invalid' git config commit.gpgsign false printf 'first\n' > lesson.txt git add lesson.txt git commit -qm 'First lesson'
Observed standard output
Whitespace check passed
Exit code: 0. Standard error: empty. Validation: Exact stdout comparison. System-dependent values above are one recorded run.