test(aggregator): cover concurrent fetch failure modes

Mocks startFetch()/resolveFetch() instead of fetch(), and splits the
old single failure test into separate start-throws and
resolve-throws cases since those are now distinct call sites.

tests/Unit/Service/ContributionAggregatorTest.php

@@ -49,7 +49,7 @@ final class ContributionAggregatorTest extends TestCase
     {
         $provider = $this->createStub(ProviderInterface::class);
         $provider->method('isConfigured')->willReturn(true);
-        $provider->method('fetch')->willReturn(['2024-01-01' => 3]);
+        $provider->method('resolveFetch')->willReturn(['2024-01-01' => 3]);
 
         $aggregator = new ContributionAggregator([$provider], $this->logger);
 
@@ -63,11 +63,11 @@ final class ContributionAggregatorTest extends TestCase
     {
         $providerA = $this->createStub(ProviderInterface::class);
         $providerA->method('isConfigured')->willReturn(true);
-        $providerA->method('fetch')->willReturn(['2024-01-01' => 3, '2024-01-02' => 1]);
+        $providerA->method('resolveFetch')->willReturn(['2024-01-01' => 3, '2024-01-02' => 1]);
 
         $providerB = $this->createStub(ProviderInterface::class);
         $providerB->method('isConfigured')->willReturn(true);
-        $providerB->method('fetch')->willReturn(['2024-01-01' => 2, '2024-01-03' => 5]);
+        $providerB->method('resolveFetch')->willReturn(['2024-01-01' => 2, '2024-01-03' => 5]);
 
         $aggregator = new ContributionAggregator([$providerA, $providerB], $this->logger);
 
@@ -77,15 +77,15 @@ final class ContributionAggregatorTest extends TestCase
     }
 
     #[Test]
-    public function it_continues_fetching_remaining_providers_when_one_throws(): void
+    public function it_continues_fetching_remaining_providers_when_one_throws_on_start(): void
     {
         $failing = $this->createStub(ProviderInterface::class);
         $failing->method('isConfigured')->willReturn(true);
-        $failing->method('fetch')->willThrowException(new \RuntimeException('Network error'));
+        $failing->method('startFetch')->willThrowException(new \RuntimeException('Network error'));
 
         $healthy = $this->createStub(ProviderInterface::class);
         $healthy->method('isConfigured')->willReturn(true);
-        $healthy->method('fetch')->willReturn(['2024-01-01' => 7]);
+        $healthy->method('resolveFetch')->willReturn(['2024-01-01' => 7]);
 
         $aggregator = new ContributionAggregator([$failing, $healthy], $this->logger);
 
@@ -95,14 +95,45 @@ final class ContributionAggregatorTest extends TestCase
     }
 
     #[Test]
-    public function it_logs_a_warning_when_a_provider_fetch_throws(): void
+    public function it_continues_fetching_remaining_providers_when_one_throws_on_resolve(): void
+    {
+        $failing = $this->createStub(ProviderInterface::class);
+        $failing->method('isConfigured')->willReturn(true);
+        $failing->method('resolveFetch')->willThrowException(new \RuntimeException('Network error'));
+
+        $healthy = $this->createStub(ProviderInterface::class);
+        $healthy->method('isConfigured')->willReturn(true);
+        $healthy->method('resolveFetch')->willReturn(['2024-01-01' => 7]);
+
+        $aggregator = new ContributionAggregator([$failing, $healthy], $this->logger);
+
+        $result = $aggregator->aggregate();
+
+        $this->assertSame(['2024-01-01' => 7], $result);
+    }
+
+    #[Test]
+    public function it_logs_a_warning_when_a_provider_start_fetch_throws(): void
     {
         $logger = $this->createMock(LoggerInterface::class);
         $logger->expects($this->once())->method('warning');
 
         $provider = $this->createStub(ProviderInterface::class);
         $provider->method('isConfigured')->willReturn(true);
-        $provider->method('fetch')->willThrowException(new \RuntimeException('fail'));
+        $provider->method('startFetch')->willThrowException(new \RuntimeException('fail'));
+
+        (new ContributionAggregator([$provider], $logger))->aggregate();
+    }
+
+    #[Test]
+    public function it_logs_a_warning_when_a_provider_resolve_fetch_throws(): void
+    {
+        $logger = $this->createMock(LoggerInterface::class);
+        $logger->expects($this->once())->method('warning');
+
+        $provider = $this->createStub(ProviderInterface::class);
+        $provider->method('isConfigured')->willReturn(true);
+        $provider->method('resolveFetch')->willThrowException(new \RuntimeException('fail'));
 
         (new ContributionAggregator([$provider], $logger))->aggregate();
     }