diff options
Diffstat (limited to 'vendor/maennchen/zipstream-php/test/BigintTest.php')
-rw-r--r-- | vendor/maennchen/zipstream-php/test/BigintTest.php | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/vendor/maennchen/zipstream-php/test/BigintTest.php b/vendor/maennchen/zipstream-php/test/BigintTest.php new file mode 100644 index 0000000..4d26fcd --- /dev/null +++ b/vendor/maennchen/zipstream-php/test/BigintTest.php @@ -0,0 +1,66 @@ +<?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)); + } +} |