Initial commit

tests/Unit/ResourceTest.php

@@ -0,0 +1,68 @@
+<?php
+
+use Shufflingpixels\IO\Exception\IOException;
+use Shufflingpixels\IO\Resource;
+
+it('reads, writes, seeks and reports stream state', function () {
+    $handle = fopen('php://temp', 'r+');
+    fwrite($handle, 'hello');
+    rewind($handle);
+
+    $stream = new class($handle, true, true, true) extends Resource {
+        public function __construct($resource, bool $seekable, bool $readable, bool $writeable)
+        {
+            parent::__construct($resource, $seekable, $readable, $writeable);
+        }
+    };
+
+    expect($stream->length())->toBe(5)
+        ->and($stream->tell())->toBe(0)
+        ->and($stream->isSeekable())->toBeTrue()
+        ->and($stream->isReadable())->toBeTrue()
+        ->and($stream->isWriteable())->toBeTrue()
+        ->and($stream->read(2))->toBe('he');
+
+    $stream->seek(0);
+    expect($stream->write('H'))->toBe(1);
+
+    $stream->seek(0);
+    expect($stream->read(5))->toBe('Hello')
+        ->and($stream->length())->toBe(5)
+        ->and($stream->eof())->toBeFalse();
+
+    $stream->read(1);
+    expect($stream->eof())->toBeTrue();
+
+    $stream->close();
+});
+
+it('throws when seeking or getting length on non-seekable stream', function () {
+    $handle = fopen('php://temp', 'r+');
+
+    $stream = new class($handle, false, true, false) extends Resource {
+        public function __construct($resource, bool $seekable, bool $readable, bool $writeable)
+        {
+            parent::__construct($resource, $seekable, $readable, $writeable);
+        }
+    };
+
+    expect(fn () => $stream->length())->toThrow(IOException::class)
+        ->and(fn () => $stream->seek(0))->toThrow(IOException::class);
+
+    $stream->close();
+});
+
+it('throws when writing to a non-writeable stream', function () {
+    $handle = fopen('php://temp', 'r+');
+
+    $stream = new class($handle, true, true, false) extends Resource {
+        public function __construct($resource, bool $seekable, bool $readable, bool $writeable)
+        {
+            parent::__construct($resource, $seekable, $readable, $writeable);
+        }
+    };
+
+    expect(fn () => $stream->write('x'))->toThrow(IOException::class, 'not writeable');
+
+    $stream->close();
+});