1 files changed, 153 insertions, 0 deletions
diff --git a/tests/lib/Files/Stream/QuotaTest.php b/tests/lib/Files/Stream/QuotaTest.php
new file mode 100644
index 00000000000..4248d14f5a1
--- /dev/null
+++ b/tests/lib/Files/Stream/QuotaTest.php
@@ -0,0 +1,153 @@
+<?php
+
+/**
+ * SPDX-FileCopyrightText: 2017-2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace Test\Files\Stream;
+
+use OC\Files\Stream\Quota;
+
+class QuotaTest extends \Test\TestCase {
+	/**
+	 * @param string $mode
+	 * @param integer $limit
+	 * @return resource
+	 */
+	protected function getStream($mode, $limit) {
+		$source = fopen('php://temp', $mode);
+		return Quota::wrap($source, $limit);
+	}
+
+	public function testWriteEnoughSpace(): void {
+		$stream = $this->getStream('w+', 100);
+		$this->assertEquals(6, fwrite($stream, 'foobar'));
+		rewind($stream);
+		$this->assertEquals('foobar', fread($stream, 100));
+	}
+
+	public function testWriteNotEnoughSpace(): void {
+		$stream = $this->getStream('w+', 3);
+		$this->assertEquals(3, fwrite($stream, 'foobar'));
+		rewind($stream);
+		$this->assertEquals('foo', fread($stream, 100));
+	}
+
+	public function testWriteNotEnoughSpaceSecondTime(): void {
+		$stream = $this->getStream('w+', 9);
+		$this->assertEquals(6, fwrite($stream, 'foobar'));
+		$this->assertEquals(3, fwrite($stream, 'qwerty'));
+		rewind($stream);
+		$this->assertEquals('foobarqwe', fread($stream, 100));
+	}
+
+	public function testWriteEnoughSpaceRewind(): void {
+		$stream = $this->getStream('w+', 6);
+		$this->assertEquals(6, fwrite($stream, 'foobar'));
+		rewind($stream);
+		$this->assertEquals(3, fwrite($stream, 'qwe'));
+		rewind($stream);
+		$this->assertEquals('qwebar', fread($stream, 100));
+	}
+
+	public function testWriteNotEnoughSpaceRead(): void {
+		$stream = $this->getStream('w+', 6);
+		$this->assertEquals(6, fwrite($stream, 'foobar'));
+		rewind($stream);
+		$this->assertEquals('foobar', fread($stream, 6));
+		$this->assertEquals(0, fwrite($stream, 'qwe'));
+	}
+
+	public function testWriteNotEnoughSpaceExistingStream(): void {
+		$source = fopen('php://temp', 'w+');
+		fwrite($source, 'foobar');
+		$stream = Quota::wrap($source, 3);
+		$this->assertEquals(3, fwrite($stream, 'foobar'));
+		rewind($stream);
+		$this->assertEquals('foobarfoo', fread($stream, 100));
+	}
+
+	public function testWriteNotEnoughSpaceExistingStreamRewind(): void {
+		$source = fopen('php://temp', 'w+');
+		fwrite($source, 'foobar');
+		$stream = Quota::wrap($source, 3);
+		rewind($stream);
+		$this->assertEquals(6, fwrite($stream, 'qwerty'));
+		rewind($stream);
+		$this->assertEquals('qwerty', fread($stream, 100));
+	}
+
+	public function testFseekReturnsSuccess(): void {
+		$stream = $this->getStream('w+', 100);
+		fwrite($stream, '0123456789');
+		$this->assertEquals(0, fseek($stream, 3, SEEK_SET));
+		$this->assertEquals(0, fseek($stream, -1, SEEK_CUR));
+		$this->assertEquals(0, fseek($stream, -4, SEEK_END));
+	}
+
+	public function testWriteAfterSeekEndWithEnoughSpace(): void {
+		$stream = $this->getStream('w+', 100);
+		fwrite($stream, '0123456789');
+		fseek($stream, -3, SEEK_END);
+		$this->assertEquals(11, fwrite($stream, 'abcdefghijk'));
+		rewind($stream);
+		$this->assertEquals('0123456abcdefghijk', fread($stream, 100));
+	}
+
+	public function testWriteAfterSeekEndWithNotEnoughSpace(): void {
+		$stream = $this->getStream('w+', 13);
+		fwrite($stream, '0123456789');
+		// seek forward first to potentially week out
+		// potential limit calculation errors
+		fseek($stream, 4, SEEK_SET);
+		// seek to the end
+		fseek($stream, -3, SEEK_END);
+		$this->assertEquals(6, fwrite($stream, 'abcdefghijk'));
+		rewind($stream);
+		$this->assertEquals('0123456abcdef', fread($stream, 100));
+	}
+
+	public function testWriteAfterSeekSetWithEnoughSpace(): void {
+		$stream = $this->getStream('w+', 100);
+		fwrite($stream, '0123456789');
+		fseek($stream, 7, SEEK_SET);
+		$this->assertEquals(11, fwrite($stream, 'abcdefghijk'));
+		rewind($stream);
+		$this->assertEquals('0123456abcdefghijk', fread($stream, 100));
+	}
+
+	public function testWriteAfterSeekSetWithNotEnoughSpace(): void {
+		$stream = $this->getStream('w+', 13);
+		fwrite($stream, '0123456789');
+		fseek($stream, 7, SEEK_SET);
+		$this->assertEquals(6, fwrite($stream, 'abcdefghijk'));
+		rewind($stream);
+		$this->assertEquals('0123456abcdef', fread($stream, 100));
+	}
+
+	public function testWriteAfterSeekCurWithEnoughSpace(): void {
+		$stream = $this->getStream('w+', 100);
+		fwrite($stream, '0123456789');
+		rewind($stream);
+		fseek($stream, 3, SEEK_CUR);
+		fseek($stream, 5, SEEK_CUR);
+		fseek($stream, -1, SEEK_CUR);
+		$this->assertEquals(11, fwrite($stream, 'abcdefghijk'));
+		rewind($stream);
+		$this->assertEquals('0123456abcdefghijk', fread($stream, 100));
+	}
+
+	public function testWriteAfterSeekCurWithNotEnoughSpace(): void {
+		$stream = $this->getStream('w+', 13);
+		fwrite($stream, '0123456789');
+		rewind($stream);
+		fseek($stream, 3, SEEK_CUR);
+		fseek($stream, 5, SEEK_CUR);
+		fseek($stream, -1, SEEK_CUR);
+		$this->assertEquals(6, fwrite($stream, 'abcdefghijk'));
+		rewind($stream);
+		$this->assertEquals('0123456abcdef', fread($stream, 100));
+	}
+}