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feat(testing): add ExpectTestStatus, ExpectAssertionsCount, ExpectTestResultAttribute (#36) - #264

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feat(testing): add ExpectTestStatus, ExpectAssertionsCount, ExpectTestResultAttribute (#36)#264
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Summary

Closes #36.

Adds three PHP attributes that let a test method assert properties of the inner stub TestResult returned by TestRunner::runTest(), without writing explicit assertion code in the test body:

  • #[ExpectTestStatus(Status::X)] — asserts stubResult->status
  • #[ExpectAssertionsCount(N)] — asserts stubResult->summary->metric('assertions')
  • #[ExpectTestResultAttribute('key')] — asserts stubResult->getAttribute('key') !== null (repeatable)

How it works

ExpectInterceptor (registered automatically by InjectPlugin) runs at ORDER_CLOSE_TO_TEST - 1. It reads the expect attributes from $info->testDefinition->reflection, calls $next() to execute the outer test, extracts $outerResult->result as the stub TestResult, then validates each declared expectation. Any mismatches are combined into a single Status::Failed with one RuntimeException. Pre-existing outer failures (or non-terminal statuses) are passed through untouched.

Files added

File Purpose
core/Testing/Attribute/ExpectTestStatus.php Attribute class
core/Testing/Attribute/ExpectAssertionsCount.php Attribute class
core/Testing/Attribute/ExpectTestResultAttribute.php Repeatable attribute class
core/Testing/Internal/ExpectInterceptor.php Interceptor implementation

Files modified

File Change
core/Testing/InjectPlugin.php Registers ExpectInterceptor

Test plan

  • 11 unit tests in tests/Core/Testing/Unit/ExpectInterceptorTest.php — all pass
  • Psalm: new files 100% clean (2 pre-existing errors in ChannelRenderer.php unrelated)
  • Full Core/Testing/Unit suite: 15/15 passed

🤖 Generated with Claude Code

@rossaddison
rossaddison requested a review from a team as a code owner July 6, 2026 14:45
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codecov Bot commented Jul 6, 2026

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Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!

rossaddison and others added 6 commits August 13, 2026 17:11
…tResultAttribute (php-testo#36)

Three PHP attributes allow a test that uses TestRunner::runTest() to
assert properties of the inner stub TestResult without writing explicit
assertion code:

- #[ExpectTestStatus(Status::X)]   — validates stub.status
- #[ExpectAssertionsCount(N)]      — validates stub.summary.metric('assertions')
- #[ExpectTestResultAttribute(K)]  — validates stub.getAttribute(K) is not null (repeatable)

ExpectInterceptor reads these from the test method's reflection, runs the
test, extracts outerResult->result as the stub TestResult, and converts any
mismatches into a single Status::Failed with a combined message. Pre-existing
outer failures are preserved untouched. Registered automatically via InjectPlugin.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
…ime return type

Style::dim() worked correctly with any string (empty or not) but declared
@PARAM non-empty-string, which Psalm flagged at every call site where a plain
string was passed. Removed the over-restrictive annotation.

ChannelRenderer::formatTime() claimed @return non-empty-string with a
/** @var non-empty-string */ inline cast, which Psalm 7 does not accept.
Replaced date() with integer arithmetic + sprintf so the implementation is
cleaner, and removed the annotation since Psalm 7 does not narrow sprintf
to non-empty-string for this version.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
…is mirrored

tests/Application/Stub/EmptyRun/ is intentionally empty — it is the test
fixture for EmptyRunTest, which asserts that a Testo run over an empty
directory yields Status::Risky with zero tests collected.

Git does not track empty directories, and bin/build-phpunit.php only copies
*.php files when populating the tests/PhpUnit/ mirror, so the mirror never
contained tests/PhpUnit/Application/Stub/EmptyRun/. The mirrored EmptyRunTest
resolved __DIR__ . '/../../Stub/EmptyRun' to that missing path and threw
InvalidArgumentException: File or directory not found — aborting Infection's
initial PHPUnit test run on every CI push to 1.x.

Add .placeholder.php (no namespace, no classes, no tests) to the source
directory. The build script copies it verbatim into the mirror, which creates
the required directory. Testo's FinderConfig still discovers zero tests there,
so Status::Risky is reported and the assertion holds.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
…t coverage

ExpectAssertionsCount, ExpectTestStatus, and ExpectTestResultAttribute each had
0% coverage per Codecov, despite ExpectInterceptorTest exercising every
constructor via newInstance(). Testo's codecov plugin scopes coverage per test
to the classes named in #[Covers(...)] on that test, so lines executed by a
test are only credited to files the test explicitly declares — and this test
only declared #[Covers(ExpectInterceptor::class)].

Add #[Covers(...)] for the three attribute classes so their already-exercised
constructors are credited.
… constructors

1.x moved 25 commits since this PR was opened, including required-argument
additions to CaseDefinition::$file and CaseInfo::$suiteIdentity. Updates
the test helper to pass both, matching the pattern used elsewhere in the
suite (Path::create(__FILE__), a real SuiteIdentity).

Verified after rebase:
- composer rector:ci: clean, 0 files
- Full-project Psalm (--no-cache): clean, exit 0
- Full Testo suite: 1682 passed, 6 failed/7 error (same pre-existing
  Bench/Self baseline as the current rector/* PR series, unrelated)
- ExpectInterceptorTest: 11/11 passed

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
@rossaddison
rossaddison force-pushed the feat/36-expect-test-attributes branch from 1a5556e to 1dc4f3d Compare August 13, 2026 16:20
rossaddison added a commit to rossaddison/testo that referenced this pull request Aug 13, 2026
…CapturedErrors to public

Addresses roxblnfk's review on php-testo#262:

- set_error_handler()/restore_error_handler() operate on one process-global
  stack. The old code installed its handler once before $next() and
  restored once after — but $next() can suspend a fiber mid-test while a
  sibling test interleaves, so the handler stayed installed (and, on an
  interleaved resume, restore_error_handler() could pop a sibling's frame
  instead of its own). Same defect as php-testo#254.

  Fixed by wrapping $next() in its own fiber and swapping the handler on
  every suspend/resume — restore (native stack pop) on suspend, reinstall
  on resume — mirroring the already-reviewed pattern in
  MockeryInterceptor::run() and MessengerHub::scope().

  Regression test added (restoresTheOuterHandlerWhileSuspendedAndReinstallsItsOwnOnResume):
  confirmed it fails against the old code (an error fired while suspended
  was wrongly captured by this test's own handler instead of reaching the
  outer one) and passes against the fix.

- Promoted Internal\CapturedErrors to a public Testo\ErrorHandler\CapturedErrors
  class (Copilot review comment): the plugin's own docs already tell
  consumers to read this attribute off TestResult, so it was never really
  internal — it just wasn't marked as such. Fixes the @api-marked
  ErrorHandlerPlugin's docblock referencing an internal type.

- The other Copilot comment (restrict the failOnError status upgrade to
  Status::Passed) was already fixed in a prior commit on this branch — no
  change needed.

Also rebased onto current 1.x (26 commits behind), resolving one real
conflict in composer.json (version bumps landed upstream since this PR
opened) and the same CaseDefinition/CaseInfo required-argument fix already
applied on php-testo#264.

The second question from review — what should happen if a test changes
the error handler itself mid-run — is intentionally left open; per
roxblnfk's own comment it needs research/discussion before implementing,
not a quick fix.

Verified:
- composer rector:ci: clean, 0 files
- Full Testo suite: 1682 passed, 6 failed/7 error (same pre-existing
  Bench/Self baseline as the current rector/* PR series, unrelated)
- ErrorHandlerInterceptorTest: 11/11 passed, including the new
  fiber-safety regression test (confirmed it fails against the old code)
- Psalm: this repo's Psalm CI only covers core/ (confirmed via psalm.xml
  and psalm.yml's trigger paths) — plugin/error-handler/ was never in
  scope, unchanged by this fix

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
rossaddison and others added 5 commits August 24, 2026 15:51
Relative deviation over the filtered iterations divided by the filtered mean without the guard its unfiltered sibling already had, so an all-zero set of measurements — reachable on a coarse timer when a trivial body fits inside one tick — crashed the runner with DivisionByZeroError instead of reporting a benchmark.

Refs php-testo#303

Assisted-By: Claude Opus 4.8 (1M context)
The outlier filter multiplies the median absolute deviation into its threshold, so a zero MAD — which a coarse timer produces routinely, whenever over half the samples share a value — collapsed the limit to zero and kept only exact-median samples, rejecting the mild tail and pushing the rejection rate past the point where the reporter declares the result invalid. A zero MAD marks a degenerately narrow distribution, so skip filtering and keep every sample.

Refs php-testo#303

Assisted-By: Claude Opus 4.8 (1M context)
docs(bench): name `current` as the percentage baseline, distinct from the fastest

The mean-difference percentage guarded on the baseline filtered time yet divided by the baseline mean, so a zero mean would still divide by zero; guard on the value actually used as the divisor, matching the median and filtered-mean rows.

Relative percentages are measured against `current` (the marked method), while first place goes to the fastest callable — two independent things. The docblocks conflated them, calling the fastest the baseline; align them with the behaviour so `current` reads as the baseline and the fastest only as the rank winner.

Refs php-testo#303

Assisted-By: Claude Opus 4.8 (1M context)

@roxblnfk roxblnfk left a comment

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Thanks for the PR! The core of the feature is solid: the interceptor logic is correct, unit tests cover all branches, and the attributes follow the existing conventions. A few things need attention before merge.

1. Output changes are out of scope and contain a regression (blocking)

The Style::dim / ChannelRenderer edits fix pre-existing Psalm noise that the PR description itself calls unrelated to #36. Please drop them from this PR and send them separately.

On top of that, the formatTime rewrite changes behavior: the old code used date('H:i:s', $seconds), which is local timezone, while the new modulo arithmetic on the unix timestamp produces UTC. The docblock still promises wall-clock time, so for anyone outside UTC the channel timestamps are now wrong. In the follow-up PR please keep date() and solve the Psalm complaint differently. Note that sprintf('%02d:...') output is provably non-empty, so @return non-empty-string could stay either way.

2. ExpectInterceptor registration in InjectPlugin

InjectPlugin is documented as #[Inject] autowiring. Registering an unrelated interceptor there means users enabling injection silently get Expect* validation, and users who want Expect* without injection cannot have it. Either a separate plugin or renaming/redocumenting InjectPlugin as a general testing-helpers plugin. Also $container->get(InterceptorCollector::class) is now called twice.

3. Missing feature test

The unit tests feed the interceptor hand-built TestResults. Nothing verifies the end-to-end path: that the assertions metric is actually present on the stub result in a real run, and that ORDER_CLOSE_TO_TEST - 1 places the interceptor correctly relative to failure wrapping. InjectFeatureTest is a good template.

Minor

  • ExpectAssertionsCount(0) cannot distinguish "zero assertions" from "metric never recorded" since Summary::metric() defaults to 0. Worth a docblock note.
  • The EmptyRun/.placeholder.php mirror fix is also unrelated to #36; fine if CI needs it, but ideally separate.

@roxblnfk
roxblnfk force-pushed the 1.x branch 2 times, most recently from abd2600 to 03ff8d9 Compare August 25, 2026 13:24
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