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BitsVectorTest.php
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BitsVectorTest.php
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<?php
namespace Keruald\OmniTools\Tests\Collections;
use InvalidArgumentException;
use Keruald\OmniTools\Collections\BitsVector;
use PHPUnit\Framework\TestCase;
class BitsVectorTest extends TestCase {
///
/// Constructors
///
public function testConstructorWithInvalidIterable () : void {
$this->expectException(InvalidArgumentException::class);
new BitsVector([1, 2, 3, 4]);
}
public function testNew () : void {
$bits = BitsVector::new(8);
$this->assertEquals(8, $bits->count());
}
public function testNewWhenCapacityIsEmpty () : void {
$bits = BitsVector::new(0);
$this->assertEquals(0, $bits->count());
}
public function testNewWhenCapacityIsNegative () : void {
$this->expectException(InvalidArgumentException::class);
BitsVector::new(-8);
}
public function testFromInteger () : void {
$bits = BitsVector::fromInteger(4);
$this->assertEquals([1, 0, 0], $bits->toArray());
}
public function testFromIntegerWhenValueIsNegative () : void {
$bits = BitsVector::fromInteger(-1);
$expected = array_fill(0, 64, 1);
$this->assertEquals($expected, $bits->toArray());
}
public function testFromBinString () : void {
$bits = BitsVector::fromBinaryString("1001");
$this->assertEquals([1, 0, 0, 1], $bits->toArray());
}
public function testFromHexString () : void {
$bits = BitsVector::fromHexString("337362ea");
$this->assertEquals("337362ea", $bits->toHexString());
}
public function testFromDecoratedHexString () : void {
$bits = BitsVector::fromDecoratedHexString("cc4eca23-b825-11ec-ab20-a81e84f35d9c");
$this->assertEquals("cc4eca23b82511ecab20a81e84f35d9c", $bits->toHexString());
}
public function testFromString () : void {
// Exemple based on pack() documentation
$binaryData = pack("nvc*", 0x1234, 0x5678, 65, 66);
$bits = BitsVector::fromString($binaryData);
$this->assertEquals(
[0x12, 0x34, 0x78, 0x56, 0x41, 0x42],
$bits->toBytesArray(),
);
}
public function testBytesArray () : void {
$bits = BitsVector::new(16)
->copyInteger(1, 0, 4)
->copyInteger(2, 4, 4)
->copyInteger(3, 8, 4)
->copyInteger(4, 12, 4);
$this->assertEquals(
[0x12, 0x34],
$bits->toBytesArray(),
);
}
public function provideLengths () : iterable {
yield [1];
yield [2];
yield [8];
yield [500];
yield [5000];
yield [0];
}
/**
* @dataProvider provideLengths
*/
public function testRandom($length) : void {
$bits = BitsVector::random($length);
$this->assertEquals($length, $bits->count());
}
public function testRandomWithNegativeLength() : void {
$this->expectException(InvalidArgumentException::class);
BitsVector::random(-1);
}
public function testBytesArrayWithBadLength () : void {
$this->expectException(InvalidArgumentException::class);
$bits = new BitsVector([1, 1, 1]); // 3 bits isn't a byte
$bits->toBytesArray();
}
public function testToBinaryString () : void {
$bits = new BitsVector([1, 0, 0, 1]);
$this->assertEquals("1001", $bits->toBinaryString());
}
public function testToInteger () : void {
$bits = new BitsVector([1, 0, 0, 1]);
$this->assertEquals(9, $bits->toInteger());
}
public function testToIntegerWhenThereIsTooMuchBits () : void {
$this->expectException(InvalidArgumentException::class);
BitsVector::new(66)->toInteger();
}
public function testPad () : void {
$bits = new BitsVector([1, 0, 0, 1]);
$bits->pad(8);
$this->assertEquals([0, 0, 0, 0, 1, 0, 0, 1], $bits->toArray());
}
public function testPadWithLargeEnoughCount () : void {
$bits = new BitsVector([1, 0, 0, 1]);
$bits->pad(4);
$this->assertEquals([1, 0, 0, 1], $bits->toArray());
}
public function testTruncate () : void {
$bits = new BitsVector([1, 0, 0, 1, 0, 0, 0, 0]);
$bits->truncate(4);
$this->assertEquals([1, 0, 0, 1], $bits->toArray());
}
public function testTruncateWithSmallEnoughCount () : void {
$bits = new BitsVector([1, 0, 0, 1]);
$bits->truncate(4);
$this->assertEquals([1, 0, 0, 1], $bits->toArray());
}
public function provideShapeArrays () : iterable {
yield [[1, 0, 0, 1, 0, 0, 0, 0], 4, [1, 0, 0, 1]];
yield [[1, 0, 0, 1], 4, [1, 0, 0, 1]];
yield [[1, 0, 0, 1], 3, [1, 0, 0]];
yield [[1, 0, 0, 1], 0, []];
yield [[], 0, []];
yield [[], 4, [0, 0, 0, 0]];
}
/**
* @dataProvider provideShapeArrays
*/
public function testShapeCapacity (array $initial, int $length, array $final) : void {
$bits = new BitsVector($initial);
$bits->shapeCapacity($length);
$this->assertEquals($final, $bits->toArray());
}
public function testCopyInteger() : void {
$bits = BitsVector::new(8);
$bits->copyInteger(5, 2, 3);
$this->assertEquals([0, 0, 1, 0, 1, 0, 0, 0], $bits->toArray());
}
///
/// BaseVector overrides
///
public function testSet () : void {
$bits = BitsVector::new(4);
$bits->set(2, 1);
$this->assertEquals([0, 0, 1, 0], $bits->toArray());
}
public function testContains () : void {
$bits = BitsVector::new(4);
$this->assertFalse($bits->contains(1));
}
public function testPush () : void {
$bits = BitsVector::new(4);
$bits->push(1);
$this->assertEquals([0, 0, 0, 0, 1], $bits->toArray());
}
public function testAppend () : void {
$bits = BitsVector::new(4);
$bits->append([1, 1]);
$this->assertEquals([0, 0, 0, 0, 1, 1], $bits->toArray());
}
public function testUpdate () : void {
$bits = BitsVector::new(4);
$bits->update([1, 0, 1, 0]); // 0 already exists, we'll add ONE 1
$this->assertEquals([0, 0, 0, 0, 1], $bits->toArray());
}
public function testOffsetSet () : void {
$bits = BitsVector::new(4);
$bits[2] = 1;
$this->assertEquals([0, 0, 1, 0], $bits->toArray());
}
}

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