Files
prautoblogger/tests/unit/Services/test-opik-client.php
peptiderepo fbbb387311 feat: Opik LLM observability tracing skeleton (Wave 1) — v0.12.0
Wires PRAutoblogger into Comet Opik cloud for per-call tracing.

- Thin PHP REST client (class-opik-client.php, 276 LOC)
- Async fire-and-forget dispatch via wp_schedule_single_event
- Feature flag PRAUTOBLOGGER_OPIK_ENABLED defaults OFF
- One trace per article, 5 spans across content-generator + chief-editor
- Exponential backoff 2s/4s/8s, max 3 retries, drops on failure
- Admin settings page (api-key configured indicator only, never rendered)
- ARCHITECTURE.md + CONVENTIONS.md updated

PR #113 — QA gate: PASS (qa-reviews/prautoblogger/2026-04-23-0d8dc67.md)
2026-04-23 22:36:24 +07:00

282 lines
8.0 KiB
PHP

<?php
declare(strict_types=1);
/**
* Unit tests for PRAutoBlogger_Opik_Client.
*
* @see includes/services/opik/class-opik-client.php
*/
namespace PRAutoBlogger\Tests\Services;
use PRAutoBlogger\Tests\BaseTestCase;
use Brain\Monkey\Functions;
/**
* @group opik
* @group services
*/
class TestOpikClient extends BaseTestCase {
/**
* Test constructor initializes properties correctly.
*/
public function test_constructor_sets_properties(): void {
$client = new \PRAutoBlogger_Opik_Client(
'test-api-key',
'test-workspace',
'https://api.example.com/opik/',
45
);
$this->assertInstanceOf( \PRAutoBlogger_Opik_Client::class, $client );
}
/**
* Test create_trace sends correct payload to endpoint.
*/
public function test_create_trace_sends_payload(): void {
$client = new \PRAutoBlogger_Opik_Client(
'test-key',
'test-workspace'
);
$trace_payload = array(
'id' => 'trace-123',
'name' => 'test_trace',
'project_name' => 'prautoblogger',
'start_time' => '2026-04-23T10:00:00Z',
'end_time' => '2026-04-23T10:01:00Z',
'input' => array( 'topic' => 'test' ),
'output' => array( 'status' => 'ok' ),
'metadata' => array(),
);
// Mock wp_remote_post to return success.
Functions\when( 'wp_remote_post' )->justReturn(
array(
'response' => array( 'code' => 200 ),
'body' => wp_json_encode( array( 'id' => 'trace-123' ) ),
)
);
Functions\when( 'wp_remote_retrieve_response_code' )->justReturn( 200 );
Functions\when( 'wp_remote_retrieve_body' )->justReturn( wp_json_encode( array( 'id' => 'trace-123' ) ) );
Functions\when( 'wp_json_encode' )->alias( 'json_encode' );
Functions\when( 'is_wp_error' )->justReturn( false );
$result = $client->create_trace( $trace_payload );
$this->assertIsArray( $result );
$this->assertArrayHasKey( 'id', $result );
}
/**
* Test create_span sends span with correct structure.
*/
public function test_create_span_sends_payload(): void {
$client = new \PRAutoBlogger_Opik_Client(
'test-key',
'test-workspace'
);
$span_payload = array(
'id' => 'span-456',
'trace_id' => 'trace-123',
'name' => 'draft_generation',
'type' => 'llm',
'start_time' => '2026-04-23T10:00:00Z',
'end_time' => '2026-04-23T10:00:15Z',
'input' => array( 'prompt_hash' => 'sha256-abc' ),
'output' => array( 'response' => 'test' ),
'model' => 'gpt-4',
'provider' => 'openrouter',
'usage' => array(
'prompt_tokens' => 100,
'completion_tokens' => 50,
'total_tokens' => 150,
),
);
Functions\when( 'wp_remote_post' )->justReturn(
array(
'response' => array( 'code' => 200 ),
'body' => wp_json_encode( array( 'id' => 'span-456' ) ),
)
);
Functions\when( 'wp_remote_retrieve_response_code' )->justReturn( 200 );
Functions\when( 'wp_remote_retrieve_body' )->justReturn( wp_json_encode( array( 'id' => 'span-456' ) ) );
Functions\when( 'wp_json_encode' )->alias( 'json_encode' );
Functions\when( 'is_wp_error' )->justReturn( false );
$result = $client->create_span( $span_payload );
$this->assertIsArray( $result );
}
/**
* Test batch_create_spans respects the 100-item limit.
*/
public function test_batch_create_spans_truncates_over_100(): void {
$client = new \PRAutoBlogger_Opik_Client(
'test-key',
'test-workspace'
);
// Create 150 dummy spans.
$spans = array_map(
function( $i ) {
return array(
'id' => "span-$i",
'trace_id' => 'trace-123',
'name' => 'test',
'type' => 'llm',
'start_time' => '2026-04-23T10:00:00Z',
'end_time' => '2026-04-23T10:00:01Z',
'input' => array(),
'output' => array(),
'model' => 'gpt-4',
'provider' => 'openrouter',
'usage' => array( 'total_tokens' => 10 ),
);
},
range( 1, 150 )
);
Functions\when( 'wp_remote_post' )->justReturn(
array(
'response' => array( 'code' => 200 ),
'body' => wp_json_encode( array( 'inserted' => 100 ) ),
)
);
Functions\when( 'wp_remote_retrieve_response_code' )->justReturn( 200 );
Functions\when( 'wp_remote_retrieve_body' )->justReturn( wp_json_encode( array( 'inserted' => 100 ) ) );
Functions\when( 'wp_json_encode' )->alias( 'json_encode' );
Functions\when( 'is_wp_error' )->justReturn( false );
// Should truncate and succeed.
$result = $client->batch_create_spans( $spans );
$this->assertIsArray( $result );
}
/**
* Test that HTTP 500 errors trigger retry logic.
*/
public function test_retry_on_500_error(): void {
$client = new \PRAutoBlogger_Opik_Client(
'test-key',
'test-workspace',
'https://api.example.com/opik/',
1 // 1-second timeout to make test fast
);
$call_count = 0;
Functions\when( 'wp_remote_post' )->alias(
function() use ( &$call_count ) {
++$call_count;
if ( $call_count < 3 ) {
// First two calls return 500.
return array(
'response' => array( 'code' => 500 ),
'body' => 'Server error',
);
}
// Third call succeeds.
return array(
'response' => array( 'code' => 200 ),
'body' => wp_json_encode( array( 'ok' => true ) ),
);
}
);
Functions\when( 'wp_remote_retrieve_response_code' )->alias(
function() use ( &$call_count ) {
return $call_count < 3 ? 500 : 200;
}
);
Functions\when( 'wp_remote_retrieve_body' )->alias(
function() use ( &$call_count ) {
return $call_count < 3 ? 'Server error' : wp_json_encode( array( 'ok' => true ) );
}
);
Functions\when( 'wp_json_encode' )->alias( 'json_encode' );
Functions\when( 'is_wp_error' )->justReturn( false );
$result = $client->create_trace( array( 'id' => 'test', 'name' => 'test' ) );
// Should eventually succeed on 3rd attempt.
$this->assertIsArray( $result );
$this->assertEquals( 3, $call_count );
}
/**
* Test that HTTP 400 errors don't retry.
*/
public function test_no_retry_on_400_error(): void {
$client = new \PRAutoBlogger_Opik_Client(
'test-key',
'test-workspace'
);
$call_count = 0;
Functions\when( 'wp_remote_post' )->alias(
function() use ( &$call_count ) {
++$call_count;
return array(
'response' => array( 'code' => 400 ),
'body' => wp_json_encode( array( 'error' => 'Bad request' ) ),
);
}
);
Functions\when( 'wp_remote_retrieve_response_code' )->justReturn( 400 );
Functions\when( 'wp_remote_retrieve_body' )->justReturn( wp_json_encode( array( 'error' => 'Bad request' ) ) );
Functions\when( 'wp_json_encode' )->alias( 'json_encode' );
Functions\when( 'is_wp_error' )->justReturn( false );
$result = $client->create_trace( array( 'id' => 'test', 'name' => 'test' ) );
// Should fail on first attempt, not retry.
$this->assertNull( $result );
$this->assertEquals( 1, $call_count );
}
/**
* Test that API key and workspace are included in headers.
*/
public function test_headers_include_credentials(): void {
$client = new \PRAutoBlogger_Opik_Client(
'secret-key-12345',
'my-workspace'
);
$captured_headers = null;
Functions\when( 'wp_remote_post' )->alias(
function( $url, $args ) use ( &$captured_headers ) {
$captured_headers = $args['headers'] ?? array();
return array(
'response' => array( 'code' => 200 ),
'body' => wp_json_encode( array() ),
);
}
);
Functions\when( 'wp_remote_retrieve_response_code' )->justReturn( 200 );
Functions\when( 'wp_remote_retrieve_body' )->justReturn( wp_json_encode( array() ) );
Functions\when( 'wp_json_encode' )->alias( 'json_encode' );
Functions\when( 'is_wp_error' )->justReturn( false );
$client->create_trace( array( 'id' => 'test', 'name' => 'test' ) );
$this->assertIsArray( $captured_headers );
$this->assertArrayHasKey( 'Authorization', $captured_headers );
$this->assertEquals( 'secret-key-12345', $captured_headers['Authorization'] );
$this->assertArrayHasKey( 'Comet-Workspace', $captured_headers );
$this->assertEquals( 'my-workspace', $captured_headers['Comet-Workspace'] );
}
}