Add Tensor buffer test and update license

Author: CodeWithKyrian

LICENSE

@@ -187,7 +187,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright [yyyy] [name of copyright owner]
+   Copyright 2024 Kyrian Obikwelu
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

composer.json

@@ -28,7 +28,7 @@
     "pestphp/pest": "^2.31",
     "symfony/var-dumper": "^7.0"
   },
-  "license": "MIT",
+  "license": "Apache-2.0",
   "autoload": {
     "psr-4": {
       "Codewithkyrian\\Transformers\\": "src/"

tests/Tensor/TensorBufferTest.php

@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+use Codewithkyrian\Transformers\Tensor\Tensor;
+use Codewithkyrian\Transformers\Tensor\TensorBuffer;
+
+beforeEach(function () {
+    $this->tensorBuffer = new TensorBuffer(5, Tensor::float32);
+});
+
+it('throws an exception when accessing offset with invalid type', fn() => $this->tensorBuffer['offset'])
+    ->throws(TypeError::class);
+
+it('can create a zero-sized buffer', function () {
+    $buffer = new TensorBuffer(0, Tensor::float32);
+
+    expect($buffer->count())->toBe(0);
+});
+
+it('gets the correct value at the given offset using square brackets', function () {
+    expect($this->tensorBuffer[0])->toBe(0.0)
+        ->and($this->tensorBuffer[4])->toBe(0.0);
+});
+
+it('sets the value at the given offset using square brackets', function () {
+    $this->tensorBuffer[0] = 1.5;
+    $this->tensorBuffer[4] = 2.5;
+
+    expect($this->tensorBuffer[0])->toBe(1.5)
+        ->and($this->tensorBuffer[4])->toBe(2.5);
+});
+
+it('throws an exception when accessing out-of-range offset', fn() => $this->tensorBuffer[5])
+    ->throws(OutOfRangeException::class);
+
+it('throws an exception when unsetting offset using square brackets', function () {
+    unset($this->tensorBuffer[0]);
+})->throws(LogicException::class);