Refactor and optimizations

tests/Unit/Services/IterationEventBufferTest.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace Tests\Unit\Services;
+
+use App\Events\PerceptronTrainingIteration;
+use App\Services\IterationEventBuffer\PerceptronIterationEventBuffer;
+use App\Services\IterationEventBuffer\PerceptronLimitedEpochEventBuffer;
+use Illuminate\Support\Facades\Event;
+use Tests\TestCase;
+
+class IterationEventBufferTest extends TestCase
+{
+    public function test_iterations_are_sent_as_a_single_batch(): void
+    {
+        Event::fake();
+        $buffer = new PerceptronIterationEventBuffer('session', 'training');
+
+        $buffer->addIteration(1, 0, 0.5, []);
+        $buffer->addIteration(1, 1, 0.25, []);
+        $buffer->flush();
+
+        Event::assertDispatched(PerceptronTrainingIteration::class, function (PerceptronTrainingIteration $event): bool {
+            return count($event->iterations) === 2;
+        });
+    }
+
+    public function test_limited_buffer_discards_non_selected_epochs(): void
+    {
+        Event::fake();
+        $buffer = new PerceptronLimitedEpochEventBuffer('session', 'training', 2);
+
+        $buffer->addIteration(1, 0, 0.5, []);
+        $buffer->addIteration(2, 0, 0.25, []);
+        $buffer->flush();
+
+        Event::assertDispatched(PerceptronTrainingIteration::class, function (PerceptronTrainingIteration $event): bool {
+            return count($event->iterations) === 1
+                && $event->iterations[0]['epoch'] === 1;
+        });
+    }
+}