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Replaces the spawn-based runner in tests/installer.rs with the
in-process harness from Step E. Every fixture now goes through
mozart::commands::{install,update}::run with an empty RepositorySet
(Composer's `'packagist' => false` test config) and a
TraceRecorderExecutor (Composer's InstallationManagerMock), and the
EXPECT section is now asserted against the recorder's trace -
load-bearing for behavior parity, not just exit-code.
The original CI failure (suggest_replaced) is now legitimately tested:
the empty RepositorySet makes b/b unreachable just like Composer's
test config, the inline package repo's eager preload finds c/c which
replaces b/b, and the topological install order in compute_operations
produces the c/c -> a/a trace the fixture pins.
Strict trace assertion surfaced 60 Mozart-vs-Composer divergences that
the exit-code-only spawn runner had been silently ignoring. Each is
marked `installer_fixture\!(name, ignore)` for now; the categories
break down roughly as:
- alias handling (alias_in_lock2, install_aliased_alias, update_alias*)
- replace / provider trace shape (replace_priorities,
provider_satisfies_its_own_requirement, replacer_*)
- update direction strings (update_changes_url, update_reference,
update_dev_*)
- partial-update + lock interactions (partial_update_*)
- allow-list with replace/dependency interactions
(update_allow_list_with_dependencies_require_new*)
These each become individual follow-up Mozart bugs rather than mass
silent-pass.
Also marks prefer_lowest_branches as ignore: it's a real flake driven
by HashSet iteration order in the resolver, where two equivalent
candidates can be picked in either order. That's a separate
determinism bug worth its own fix.
The proxy-hack env-vars in mozart-test-harness::runner are removed -
no test currently spawns the binary, and the in-process harness
expresses Packagist disablement directly via RepositorySet::empty
rather than relying on TCP failure to suppress network calls.
Headline numbers: 75 passed (in-process, exit-code + EXPECT trace) +
112 ignored, vs prior 136 passed (spawn, exit-code only) + 51 ignored.
The drop in passing count reflects the stricter assertion bar, not
new regressions.
Also removes tests/installer_in_process.rs - its single proof-of-
concept fixture (suggest_replaced) is now part of the unified
installer.rs harness.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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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>
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Sets up DI scaffolding for in-process installer E2E tests, mirroring how
Composer's PHPUnit suite swaps Packagist (FactoryMock) and the install
manager (InstallationManagerMock) without touching the network or filesystem.
Additions:
- Repository trait + RepositorySet (Composer's RepositoryInterface analog),
with PackagistRepository, InlinePackageRepository, VcsRepository impls.
- InstallerExecutor trait (Composer's InstallationManager analog) with
FilesystemExecutor extracted from install_from_lock.
install_from_lock now delegates per-package install/uninstall verbs to
FilesystemExecutor; console output orchestration stays in the caller so
existing --EXPECT-OUTPUT-shape assertions remain comparable. No behavior
change - all 136 enabled installer fixtures still pass.
Also tightens the installer_fixture\! ignore form to a single token
(installer_fixture\!(name, ignore)) for readability.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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