Crc32 (#31)

* broken * crc tests * ffi changes * large buffer test * ffi cmake fix * formatting * laws-checksums config.m4 * broken * crc tests * ffi changes * large buffer test * ffi cmake fix * formatting * laws-checksums config.m4 * Fixed aws-crt-ffi after rebase of main * Regenerated awscrt_arginfo.h * merge fix * Fixed arginfo * try forcing memory limit higher * mem_limit set * newline Co-authored-by: Itamar Levy-Or <[email protected]>
2026-08-17 17:47:12 +00:00 · 2021-06-18 18:04:56 -04:00
parent 078df4825c
commit ebfb91f562
9 changed files with 305 additions and 134 deletions
@@ -0,0 +1,90 @@
+<?php
+/**
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0.
+ */
+use AWS\CRT\CRT;
+
+require_once('common.inc');
+
+final class CrcTest extends CrtTestCase {
+
+    public function testCrc32ZeroesOneShot() {
+        $input = implode(array_map("chr", array_fill(0, 32, 0)));
+        $output = CRT::crc32($input);
+        $expected = 0x190A55AD;
+        $this->assertEquals($output, $expected);
+    }
+
+    public function testCrc32ZeroesIterated() {
+        $output = 0;
+        for ($i = 0; $i < 32; $i++) {
+            $output = CRT::crc32("\x00", $output);
+        }
+        $expected = 0x190A55AD;
+        $this->assertEquals($output, $expected);
+    }
+
+    public function testCrc32ValuesOneShot() {
+        $input = implode(array_map("chr", range(0, 31)));
+        $output = CRT::crc32($input);
+        $expected = 0x91267E8A;
+        $this->assertEquals($output, $expected);
+    }
+
+    public function testCrc32ValuesIterated() {
+        $output = 0;
+        foreach (range(0, 31) as $n) {
+            $output = CRT::crc32(chr($n), $output);
+        }
+        $expected = 0x91267E8A;
+        $this->assertEquals($output, $expected);
+    }
+
+    public function testCrc32LargeBuffer() {
+        $input = implode(array_map("chr", array_fill(0, 1 << 20, 0)));
+        $output = CRT::crc32($input);
+        $expected = 0xA738EA1C;
+        $this->assertEquals($output, $expected);
+    }
+
+    public function testCrc32cZeroesOneShot() {
+        $input = implode(array_map("chr", array_fill(0, 32, 0)));
+        $output = CRT::crc32c($input);
+        $expected = 0x8A9136AA;
+        $this->assertEquals($output, $expected);
+    }
+
+    public function testCrc32cZeroesIterated() {
+        $output = 0;
+        for ($i = 0; $i < 32; $i++) {
+            $output = CRT::crc32c("\x00", $output);
+        }
+        $expected = 0x8A9136AA;
+        $this->assertEquals($output, $expected);
+    }
+
+    public function testCrc32cValuesOneShot() {
+        $input = implode(array_map("chr", range(0, 31)));
+        $output = CRT::crc32c($input);
+        $expected = 0x46DD794E;
+        $this->assertEquals($output, $expected);
+    }
+
+    public function testCrc32cValuesIterated() {
+        $output = 0;
+        foreach (range(0, 31) as $n) {
+            $output = CRT::crc32c(chr($n), $output);
+        }
+        $expected = 0x46DD794E;
+        $this->assertEquals($output, $expected);
+    }
+
+    public function testCrc32cLargeBuffer() {
+        $input = implode(array_map("chr", array_fill(0, 1 << 20, 0)));
+        $output = CRT::crc32c($input);
+        $expected = 0x14298C12;
+        $this->assertEquals($output, $expected);
+    }
+    
+}
@@ -5,6 +5,8 @@
 */
 use AWS\CRT\CRT as CRT;

+ini_set("memory_limit", "512M");
+
 abstract class CrtTestCase extends PHPUnit_Framework_TestCase {
    private static $crt = null;
    public static function setUpBeforeClass() {