chore(tests): remove test deprecation warnings

[pauldambra]

[Robot]

💡 Motivation and Context

PHPUnit prints 42 metadata deprecations and up to 27 PHP deprecations on every test run. CI still passes, but the noise hides new warnings. PHPUnit 12 also drops doc-comment metadata, so these tests would stop finding their data providers.

• Doc-comment @dataProvider tags are now #[DataProvider(...)] attributes.
• setAccessible() calls are removed. They do nothing on PHP 8.1 and later, and composer.json needs PHP 8.2. PHP 8.5 reports them as deprecated.
• Tests that cover the deprecated flag APIs now have #[IgnoreDeprecations]. The coverage stays. The tests that check the deprecation warnings are unchanged.

Only files under test/ change.

💚 How did you test it?

• Before, on main: Tests: 792, Assertions: 5761, Deprecations: 27, PHPUnit Deprecations: 42.
• After: OK (792 tests, 5761 assertions) with no deprecations (PHP 8.5, PHPUnit 11.5).
• phpcs finds no new warnings on the changed files.

📝 Checklist

• I reviewed the submitted code.
• I added tests to verify the changes.
• I updated the docs if needed.
• No breaking change or entry added to the changelog.

If releasing new changes

• Ran pnpm change to generate a change intent file

Test-only change, so no change intent file.

🤖 Agent context

Autonomy: Human-driven (agent-assisted)

Claude Opus 5.5 (claude-opus-5-5) wrote this change with PostHog Desktop.

#[IgnoreDeprecations] hides any deprecation inside the marked tests, not only the flag API ones. The repo also has a narrower set_error_handler pattern in FeatureFlagLocalEvaluationTest::setUp. The attribute was used here because it is a much smaller diff across nine classes.

---

Created with PostHog Desktop

[github-actions]

posthog-php-fork_curl Compliance Report

Date: 2026-10-18T10:58:01.142618+00:00
Duration: 111551ms

⚠️ Some Tests Failed

36/47 tests passed, 11 failed

---

Capture Tests

⚠️ 19/30 tests passed, 11 failed

View Details

Test	Status	Duration
Format Validation.Event Has Required Fields	✅	27ms
Format Validation.Event Has Uuid	✅	522ms
Format Validation.Event Has Lib Properties	✅	524ms
Format Validation.Distinct Id Is String	✅	524ms
Format Validation.Token Is Present	✅	524ms
Format Validation.Custom Properties Preserved	✅	526ms
Format Validation.Event Has Timestamp	✅	524ms
Format Validation.Non Utc Event Timestamp Is Converted To Utc	✅	525ms
Retry Behavior.Retries On 503	❌	5529ms
Retry Behavior.Does Not Retry On 400	✅	2528ms
Retry Behavior.Does Not Retry On 401	✅	2530ms
Retry Behavior.Respects Retry After Header	❌	5527ms
Retry Behavior.Implements Backoff	❌	15528ms
Retry Behavior.Retries On 500	❌	5043ms
Retry Behavior.Retries On 502	❌	5531ms
Retry Behavior.Retries On 504	❌	5530ms
Retry Behavior.Max Retries Respected	❌	15539ms
Deduplication.Generates Unique Uuids	✅	535ms
Deduplication.Preserves Uuid On Retry	❌	5529ms
Deduplication.Preserves Uuid And Timestamp On Retry	❌	10530ms
Deduplication.Preserves Uuid And Timestamp On Batch Retry	❌	5034ms
Deduplication.No Duplicate Events In Batch	✅	531ms
Deduplication.Different Events Have Different Uuids	✅	573ms
Compression.Sends Gzip When Enabled	✅	528ms
Batch Format.Uses Proper Batch Structure	✅	526ms
Batch Format.Flush With No Events Sends Nothing	✅	513ms
Batch Format.Multiple Events Batched Together	✅	516ms
Error Handling.Does Not Retry On 403	✅	2527ms
Error Handling.Does Not Retry On 413	✅	2529ms
Error Handling.Retries On 408	❌	5528ms

Failures

retry_behavior.retries_on_503

Expected at least 3 requests, got 1

retry_behavior.respects_retry_after_header

Expected at least 2 requests, got 1

retry_behavior.implements_backoff

Expected at least 3 requests, got 1

retry_behavior.retries_on_500

Expected at least 2 requests, got 1

retry_behavior.retries_on_502

Expected at least 2 requests, got 1

retry_behavior.retries_on_504

Expected at least 2 requests, got 1

retry_behavior.max_retries_respected

Expected 4 requests, got 1

deduplication.preserves_uuid_on_retry

Need at least 2 requests to check retry

deduplication.preserves_uuid_and_timestamp_on_retry

Expected at least 3 requests, got 1

deduplication.preserves_uuid_and_timestamp_on_batch_retry

Expected at least 2 requests, got 1

error_handling.retries_on_408

Expected at least 2 requests, got 1

Feature_Flags Tests

✅ 17/17 tests passed

View Details

Test	Status	Duration
Request Payload.Request With Person Properties Device Id	✅	519ms
Request Payload.Flags Request Uses V2 Query Param	✅	517ms
Request Payload.Flags Request Hits Flags Path Not Decide	✅	518ms
Request Payload.Flags Request Omits Authorization Header	✅	518ms
Request Payload.Token In Flags Body Matches Init	✅	518ms
Request Payload.Groups Round Trip	✅	516ms
Request Payload.Groups Default To Empty Object	✅	519ms
Request Payload.Disable Geoip False Propagates As Geoip Disable False	✅	517ms
Request Payload.Disable Geoip Omitted Defaults To False	✅	518ms
Request Payload.Flag Keys To Evaluate Contains Only Requested Key	✅	517ms
Request Lifecycle.No Flags Request On Init Alone	✅	514ms
Request Lifecycle.No Flags Request On Normal Capture	✅	515ms
Request Lifecycle.Two Flag Calls Produce Two Remote Requests	✅	520ms
Request Lifecycle.Mock Response Value Is Returned To Caller	✅	517ms
Retry Behavior.Retries Flags On 502	✅	621ms
Retry Behavior.Retries Flags On 504	✅	618ms
Side Effect Events.Get Feature Flag Captures Feature Flag Called Event	✅	524ms

[github-actions]

posthog-php-lib_curl Compliance Report

Date: 2026-10-18T10:58:05.112440+00:00
Duration: 118891ms

✅ All Tests Passed!

47/47 tests passed

---

Capture Tests

✅ 30/30 tests passed

View Details

Test	Status	Duration
Format Validation.Event Has Required Fields	✅	28ms
Format Validation.Event Has Uuid	✅	523ms
Format Validation.Event Has Lib Properties	✅	524ms
Format Validation.Distinct Id Is String	✅	523ms
Format Validation.Token Is Present	✅	524ms
Format Validation.Custom Properties Preserved	✅	524ms
Format Validation.Event Has Timestamp	✅	525ms
Format Validation.Non Utc Event Timestamp Is Converted To Utc	✅	524ms
Retry Behavior.Retries On 503	✅	5833ms
Retry Behavior.Does Not Retry On 400	✅	2528ms
Retry Behavior.Does Not Retry On 401	✅	2525ms
Retry Behavior.Respects Retry After Header	✅	8534ms
Retry Behavior.Implements Backoff	✅	16247ms
Retry Behavior.Retries On 500	✅	5632ms
Retry Behavior.Retries On 502	✅	5635ms
Retry Behavior.Retries On 504	✅	5633ms
Retry Behavior.Max Retries Respected	✅	17037ms
Deduplication.Generates Unique Uuids	✅	243ms
Deduplication.Preserves Uuid On Retry	✅	5630ms
Deduplication.Preserves Uuid And Timestamp On Retry	✅	10843ms
Deduplication.Preserves Uuid And Timestamp On Batch Retry	✅	5637ms
Deduplication.No Duplicate Events In Batch	✅	531ms
Deduplication.Different Events Have Different Uuids	✅	526ms
Compression.Sends Gzip When Enabled	✅	523ms
Batch Format.Uses Proper Batch Structure	✅	524ms
Batch Format.Flush With No Events Sends Nothing	✅	520ms
Batch Format.Multiple Events Batched Together	✅	512ms
Error Handling.Does Not Retry On 403	✅	2526ms
Error Handling.Does Not Retry On 413	✅	2529ms
Error Handling.Retries On 408	✅	5632ms

Feature_Flags Tests

✅ 17/17 tests passed

View Details

Test	Status	Duration
Request Payload.Request With Person Properties Device Id	✅	524ms
Request Payload.Flags Request Uses V2 Query Param	✅	522ms
Request Payload.Flags Request Hits Flags Path Not Decide	✅	521ms
Request Payload.Flags Request Omits Authorization Header	✅	523ms
Request Payload.Token In Flags Body Matches Init	✅	521ms
Request Payload.Groups Round Trip	✅	523ms
Request Payload.Groups Default To Empty Object	✅	525ms
Request Payload.Disable Geoip False Propagates As Geoip Disable False	✅	522ms
Request Payload.Disable Geoip Omitted Defaults To False	✅	521ms
Request Payload.Flag Keys To Evaluate Contains Only Requested Key	✅	522ms
Request Lifecycle.No Flags Request On Init Alone	✅	517ms
Request Lifecycle.No Flags Request On Normal Capture	✅	509ms
Request Lifecycle.Two Flag Calls Produce Two Remote Requests	✅	526ms
Request Lifecycle.Mock Response Value Is Returned To Caller	✅	523ms
Retry Behavior.Retries Flags On 502	✅	626ms
Retry Behavior.Retries Flags On 504	✅	624ms
Side Effect Events.Get Feature Flag Captures Feature Flag Called Event	✅	525ms

[github-actions]

posthog-php-socket Compliance Report

Date: 2026-10-18T10:58:18.468812+00:00
Duration: 149299ms

⚠️ Some Tests Failed

36/47 tests passed, 11 failed

---

Capture Tests

⚠️ 19/30 tests passed, 11 failed

View Details

Test	Status	Duration
Format Validation.Event Has Required Fields	✅	29ms
Format Validation.Event Has Uuid	✅	522ms
Format Validation.Event Has Lib Properties	✅	525ms
Format Validation.Distinct Id Is String	✅	526ms
Format Validation.Token Is Present	✅	524ms
Format Validation.Custom Properties Preserved	✅	524ms
Format Validation.Event Has Timestamp	✅	525ms
Format Validation.Non Utc Event Timestamp Is Converted To Utc	✅	525ms
Retry Behavior.Retries On 503	❌	9233ms
Retry Behavior.Does Not Retry On 400	✅	2529ms
Retry Behavior.Does Not Retry On 401	✅	2525ms
Retry Behavior.Respects Retry After Header	❌	9231ms
Retry Behavior.Implements Backoff	❌	18749ms
Retry Behavior.Retries On 500	❌	9239ms
Retry Behavior.Retries On 502	❌	9238ms
Retry Behavior.Retries On 504	❌	9235ms
Retry Behavior.Max Retries Respected	❌	19249ms
Deduplication.Generates Unique Uuids	✅	534ms
Deduplication.Preserves Uuid On Retry	❌	9234ms
Deduplication.Preserves Uuid And Timestamp On Retry	❌	14243ms
Deduplication.Preserves Uuid And Timestamp On Batch Retry	❌	9240ms
Deduplication.No Duplicate Events In Batch	✅	533ms
Deduplication.Different Events Have Different Uuids	✅	529ms
Compression.Sends Gzip When Enabled	✅	524ms
Batch Format.Uses Proper Batch Structure	✅	524ms
Batch Format.Flush With No Events Sends Nothing	✅	520ms
Batch Format.Multiple Events Batched Together	✅	513ms
Error Handling.Does Not Retry On 403	✅	2528ms
Error Handling.Does Not Retry On 413	✅	2527ms
Error Handling.Retries On 408	❌	5529ms

Failures

retry_behavior.retries_on_503

Expected at least 3 requests, got 1

retry_behavior.respects_retry_after_header

Expected at least 2 requests, got 1

retry_behavior.implements_backoff

Expected at least 3 requests, got 1

retry_behavior.retries_on_500

Expected at least 2 requests, got 1

retry_behavior.retries_on_502

Expected at least 2 requests, got 1

retry_behavior.retries_on_504

Expected at least 2 requests, got 1

retry_behavior.max_retries_respected

Expected 4 requests, got 1

deduplication.preserves_uuid_on_retry

Need at least 2 requests to check retry

deduplication.preserves_uuid_and_timestamp_on_retry

Expected at least 3 requests, got 1

deduplication.preserves_uuid_and_timestamp_on_batch_retry

Expected at least 2 requests, got 1

error_handling.retries_on_408

Expected at least 2 requests, got 1

Feature_Flags Tests

✅ 17/17 tests passed

View Details

Test	Status	Duration
Request Payload.Request With Person Properties Device Id	✅	525ms
Request Payload.Flags Request Uses V2 Query Param	✅	520ms
Request Payload.Flags Request Hits Flags Path Not Decide	✅	522ms
Request Payload.Flags Request Omits Authorization Header	✅	523ms
Request Payload.Token In Flags Body Matches Init	✅	522ms
Request Payload.Groups Round Trip	✅	522ms
Request Payload.Groups Default To Empty Object	✅	522ms
Request Payload.Disable Geoip False Propagates As Geoip Disable False	✅	522ms
Request Payload.Disable Geoip Omitted Defaults To False	✅	523ms
Request Payload.Flag Keys To Evaluate Contains Only Requested Key	✅	523ms
Request Lifecycle.No Flags Request On Init Alone	✅	516ms
Request Lifecycle.No Flags Request On Normal Capture	✅	511ms
Request Lifecycle.Two Flag Calls Produce Two Remote Requests	✅	526ms
Request Lifecycle.Mock Response Value Is Returned To Caller	✅	524ms
Retry Behavior.Retries Flags On 502	✅	625ms
Retry Behavior.Retries Flags On 504	✅	625ms
Side Effect Events.Get Feature Flag Captures Feature Flag Called Event	✅	524ms