[Platform][HuggingFace] Add comprehensive tests for Classification

Author: OskarStark

src/platform/tests/Bridge/HuggingFace/Output/ClassificationTest.php

@@ -0,0 +1,81 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\AI\Platform\Tests\Bridge\HuggingFace\Output;
+
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\Small;
+use PHPUnit\Framework\Attributes\TestDox;
+use PHPUnit\Framework\Attributes\TestWith;
+use PHPUnit\Framework\TestCase;
+use Symfony\AI\Platform\Bridge\HuggingFace\Output\Classification;
+
+/**
+ * @author Oskar Stark <[email protected]>
+ */
+#[CoversClass(Classification::class)]
+#[Small]
+final class ClassificationTest extends TestCase
+{
+    #[TestDox('Construction with label and score creates valid instance')]
+    public function testConstruction()
+    {
+        $classification = new Classification('positive', 0.95);
+
+        $this->assertSame('positive', $classification->label);
+        $this->assertSame(0.95, $classification->score);
+    }
+
+    #[TestDox('Constructor accepts various label and score combinations')]
+    #[TestWith(['positive', 0.99])]
+    #[TestWith(['negative', 0.01])]
+    #[TestWith(['neutral', 0.5])]
+    #[TestWith(['', 0.5])]
+    #[TestWith(['this_is_a_very_long_classification_label_that_might_be_used_in_some_models', 0.75])]
+    #[TestWith(['minimum', 0.0])]
+    #[TestWith(['maximum', 1.0])]
+    #[TestWith(['émoji 🎉', 0.8])]
+    #[TestWith(['special-chars_123!@#', 0.65])]
+    public function testConstructorWithDifferentValues(string $label, float $score)
+    {
+        $classification = new Classification($label, $score);
+
+        $this->assertSame($label, $classification->label);
+        $this->assertSame($score, $classification->score);
+    }
+
+    #[TestDox('Instance is immutable')]
+    public function testImmutability()
+    {
+        $classification = new Classification('original', 0.7);
+
+        // Create a new instance with different values
+        $newClassification = new Classification('modified', 0.3);
+
+        // Ensure original instance is unchanged
+        $this->assertSame('original', $classification->label);
+        $this->assertSame(0.7, $classification->score);
+
+        $this->assertSame('modified', $newClassification->label);
+        $this->assertSame(0.3, $newClassification->score);
+    }
+
+    #[TestDox('Special score values are handled correctly')]
+    #[TestWith(['precision', 0.123456789])]
+    #[TestWith(['negative', -0.5])]
+    #[TestWith(['above_one', 1.5])]
+    public function testSpecialScoreValues(string $label, float $score)
+    {
+        $classification = new Classification($label, $score);
+
+        $this->assertSame($score, $classification->score);
+    }
+}