Sven van Heugten
210dd4d72d
```git-check-assertions run nix build assert_success git checkout HEAD~ run nix build assert_failure assert_output --partial "done <.git-check-assertions-cache" ```
132 lines
3.8 KiB
Bash
Executable file
132 lines
3.8 KiB
Bash
Executable file
#!/usr/bin/env bash
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# Copyright (c) 2026 Sven van Heugten
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#
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# Repository: https://codeberg.org/svenvanheugten/git-check-assertions
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in all
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# copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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set -euo pipefail
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# helper functions inspired by bats/bats-assert
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run() {
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set +e
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output="$("$@" 2>&1)"
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status=$?
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set -e
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printf '%s\n' "$output"
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return 0
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}
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assert_success() {
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if [ "$status" -ne 0 ]; then
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echo "Expected command to succeed, but it failed."
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exit 1
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fi
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}
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assert_failure() {
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if [ "$status" -eq 0 ]; then
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echo "Expected command to fail, but it succeeded."
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exit 1
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fi
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}
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assert_output() {
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if [ "${1:-}" = "--partial" ]; then
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local expected="$2"
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if [[ "$output" != *"$expected"* ]]; then
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echo "Expected output to contain: $expected"
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echo "Actual output: $output"
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exit 1
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fi
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return 0
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fi
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if [ "$output" != "$1" ]; then
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echo "Expected output to equal: $1"
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echo "Actual output: $output"
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exit 1
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fi
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}
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export -f run assert_success assert_failure assert_output
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# main flow
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if [ ! -z "$(git status --porcelain)" ]; then
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echo "Uncommitted changes. Refusing to run." >&2
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exit 1
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fi
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orig_ref="$(git symbolic-ref --quiet --short HEAD || git rev-parse HEAD)"
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if git show-ref --verify --quiet refs/heads/main; then
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base_branch=main
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elif git show-ref --verify --quiet refs/heads/master; then
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base_branch=master
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else
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echo "No main or master branch found." >&2
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exit 1
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fi
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restore() {
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git restore -q --staged --worktree .
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}
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base="$(git merge-base "$base_branch" HEAD)"
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mapfile -t commits < <(git rev-list --reverse "${base}..HEAD")
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echo "Base: $base"
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echo "Commits to visit: ${#commits[@]}"
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echo
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declare -A cached_commits=()
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if [ -f .git-check-assertions-cache ]; then
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while IFS= read -r cached_commit; do
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if [ -n "$cached_commit" ]; then
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cached_commits["$cached_commit"]=1
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fi
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done <.git-check-assertions-cache
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fi
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for commit_hash in "${commits[@]}"; do
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if [ -n "${cached_commits[$commit_hash]+x}" ]; then
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echo "Skipping $commit_hash (cached)"
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echo
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continue
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fi
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echo "Checking out $commit_hash"
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git -c advice.detachedHead=false checkout -q "$commit_hash"
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commit_msg="$(git log -1 --format=%B "$commit_hash")"
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# shellcheck disable=SC2016
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block="$(printf '%s\n' "$commit_msg" |
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sed -n '/^```git-check-assertions[[:space:]]*$/,/^```[[:space:]]*$/p' |
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sed '1d;$d')"
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if [ -n "$block" ]; then
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echo "git-check-assertions block in $commit_hash:"
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printf '%s\n' "$block" | sed 's/^/> /'
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if ! bash -euo pipefail -c "$block"; then
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echo "git-check-assertions block failed in $commit_hash" >&2
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restore
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echo "Returning to $orig_ref"
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git checkout -q "$orig_ref"
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exit 1
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fi
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restore
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fi
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printf '%s\n' "$commit_hash" >>.git-check-assertions-cache
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echo
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done
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echo
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echo "Success!"
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echo "Returning to $orig_ref"
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git checkout -q "$orig_ref"
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