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path: root/crates/mozart/tests/installer_in_process.rs
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2026-05-02feat(installer): add trace recorder and topo install ordernsfisis
Adds TraceRecorderExecutor (Composer's InstallationManagerMock analog), which records every install/update/uninstall as a string matching Composer's *Operation::__toString output (after strip_tags) - the load-bearing assertion target for in-process fixture tests. Two changes were needed to make the recorder useful: - InstallerExecutor::uninstall_package gains a version parameter, and install_from_lock now looks up both the uninstall and the Update-from-version from installed.json. Previously the Update path passed the new version as a placeholder; the recorder needs the real old version to emit `Upgrading pkg (old => new)`. - compute_operations now topologically sorts the lock contents (deps before dependents) before computing actions, mirroring Composer's Transaction::calculateOperations. Without this, packages would install in alphabetical order and the trace would diverge from Composer's expectation. Also adds crates/mozart/tests/installer_in_process.rs with the in-process harness scaffold: parses the same .test fixtures, builds a tempdir, calls commands::install::run / update::run with an empty RepositorySet (no Packagist) and a TraceRecorderExecutor, then asserts exit code + EXPECT trace. One fixture wired up: suggest_replaced - the original CI failure that motivated this whole DI refactor. It now passes on the in-process path because the empty RepositorySet makes b/b unreachable just like Composer's `'packagist' => false` test config, and the resolver finds c/c (which replaces b/b) via the inline package repo's eager preload. Step F will migrate every fixture currently in installer.rs to the new harness; remaining divergences (alias handling, output ordering, replace trace shape, etc.) will surface as individual follow-ups. All 136 existing spawn-based fixtures + 114 mozart-registry tests + 541 mozart lib tests still green; clippy clean. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>