first commit

phpspreadsheet_1.8.1.0/vendor/maennchen/zipstream-php/test/BigintTest.php

@@ -0,0 +1,65 @@
+<?php
+declare(strict_types=1);
+
+namespace BigintTest;
+
+use OverflowException;
+use PHPUnit\Framework\TestCase;
+use ZipStream\Bigint;
+
+class BigintTest extends TestCase
+{
+    public function testConstruct(): void
+    {
+        $bigint = new Bigint(0x12345678);
+        $this->assertSame('0x0000000012345678', $bigint->getHex64());
+        $this->assertSame(0x12345678, $bigint->getLow32());
+        $this->assertSame(0, $bigint->getHigh32());
+    }
+
+    public function testConstructLarge(): void
+    {
+        $bigint = new Bigint(0x87654321);
+        $this->assertSame('0x0000000087654321', $bigint->getHex64());
+        $this->assertSame('87654321', bin2hex(pack('N', $bigint->getLow32())));
+        $this->assertSame(0, $bigint->getHigh32());
+    }
+
+    public function testAddSmallValue(): void
+    {
+        $bigint = new Bigint(1);
+        $bigint = $bigint->add(Bigint::init(2));
+        $this->assertSame(3, $bigint->getLow32());
+        $this->assertFalse($bigint->isOver32());
+        $this->assertTrue($bigint->isOver32(true));
+        $this->assertSame($bigint->getLowFF(), (float)$bigint->getLow32());
+        $this->assertSame($bigint->getLowFF(true), (float)0xFFFFFFFF);
+    }
+
+    public function testAddWithOverflowAtLowestByte(): void
+    {
+        $bigint = new Bigint(0xFF);
+        $bigint = $bigint->add(Bigint::init(0x01));
+        $this->assertSame(0x100, $bigint->getLow32());
+    }
+
+    public function testAddWithOverflowAtInteger32(): void
+    {
+        $bigint = new Bigint(0xFFFFFFFE);
+        $this->assertFalse($bigint->isOver32());
+        $bigint = $bigint->add(Bigint::init(0x01));
+        $this->assertTrue($bigint->isOver32());
+        $bigint = $bigint->add(Bigint::init(0x01));
+        $this->assertSame('0x0000000100000000', $bigint->getHex64());
+        $this->assertTrue($bigint->isOver32());
+        $this->assertSame((float)0xFFFFFFFF, $bigint->getLowFF());
+    }
+
+    public function testAddWithOverflowAtInteger64(): void
+    {
+        $bigint = Bigint::fromLowHigh(0xFFFFFFFF, 0xFFFFFFFF);
+        $this->assertSame('0xFFFFFFFFFFFFFFFF', $bigint->getHex64());
+        $this->expectException(OverflowException::class);
+        $bigint->add(Bigint::init(1));
+    }
+}