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| 1 | +<?php |
| 2 | + |
| 3 | +declare(strict_types=1); |
| 4 | + |
| 5 | +namespace Nejcc\PhpDatatypes\Tests; |
| 6 | + |
| 7 | +use Nejcc\PhpDatatypes\Scalar\Byte; |
| 8 | +use PHPUnit\Framework\TestCase; |
| 9 | + |
| 10 | +class ByteTest extends TestCase |
| 11 | +{ |
| 12 | + /** |
| 13 | + * Test that the constructor throws an exception when the value is out of range. |
| 14 | + */ |
| 15 | + public function testConstructorThrowsExceptionOnInvalidValue() |
| 16 | + { |
| 17 | + $this->expectException(\InvalidArgumentException::class); |
| 18 | + new Byte(300); // Out of range value |
| 19 | + } |
| 20 | + |
| 21 | + /** |
| 22 | + * Test that the constructor correctly assigns the value. |
| 23 | + */ |
| 24 | + public function testConstructorAssignsValidValue() |
| 25 | + { |
| 26 | + $byte = new Byte(100); |
| 27 | + $this->assertEquals(100, $byte->getValue()); |
| 28 | + } |
| 29 | + |
| 30 | + /** |
| 31 | + * Test bitwise AND operation. |
| 32 | + */ |
| 33 | + public function testAndOperation() |
| 34 | + { |
| 35 | + $byte1 = new Byte(170); // 10101010 |
| 36 | + $byte2 = new Byte(85); // 01010101 |
| 37 | + $result = $byte1->and($byte2); |
| 38 | + |
| 39 | + $this->assertEquals(0, $result->getValue()); // 00000000 |
| 40 | + } |
| 41 | + |
| 42 | + /** |
| 43 | + * Test bitwise OR operation. |
| 44 | + */ |
| 45 | + public function testOrOperation() |
| 46 | + { |
| 47 | + $byte1 = new Byte(170); // 10101010 |
| 48 | + $byte2 = new Byte(85); // 01010101 |
| 49 | + $result = $byte1->or($byte2); |
| 50 | + |
| 51 | + $this->assertEquals(255, $result->getValue()); // 11111111 |
| 52 | + } |
| 53 | + |
| 54 | + /** |
| 55 | + * Test bitwise XOR operation. |
| 56 | + */ |
| 57 | + public function testXorOperation() |
| 58 | + { |
| 59 | + $byte1 = new Byte(170); // 10101010 |
| 60 | + $byte2 = new Byte(85); // 01010101 |
| 61 | + $result = $byte1->xor($byte2); |
| 62 | + |
| 63 | + $this->assertEquals(255, $result->getValue()); // 11111111 |
| 64 | + } |
| 65 | + |
| 66 | + /** |
| 67 | + * Test bitwise NOT operation. |
| 68 | + */ |
| 69 | + public function testNotOperation() |
| 70 | + { |
| 71 | + $byte = new Byte(170); // 10101010 |
| 72 | + $result = $byte->not(); |
| 73 | + |
| 74 | + $this->assertEquals(85, $result->getValue()); // 01010101 |
| 75 | + } |
| 76 | + |
| 77 | + /** |
| 78 | + * Test left bit shifting. |
| 79 | + */ |
| 80 | + public function testShiftLeftOperation() |
| 81 | + { |
| 82 | + $byte = new Byte(15); // 00001111 |
| 83 | + $result = $byte->shiftLeft(2); |
| 84 | + |
| 85 | + $this->assertEquals(60, $result->getValue()); // 00111100 |
| 86 | + } |
| 87 | + |
| 88 | + /** |
| 89 | + * Test right bit shifting. |
| 90 | + */ |
| 91 | + public function testShiftRightOperation() |
| 92 | + { |
| 93 | + $byte = new Byte(240); // 11110000 |
| 94 | + $result = $byte->shiftRight(2); |
| 95 | + |
| 96 | + $this->assertEquals(60, $result->getValue()); // 00111100 |
| 97 | + } |
| 98 | + |
| 99 | + /** |
| 100 | + * Test equality comparison between two bytes. |
| 101 | + */ |
| 102 | + public function testEquals() |
| 103 | + { |
| 104 | + $byte1 = new Byte(100); |
| 105 | + $byte2 = new Byte(100); |
| 106 | + |
| 107 | + $this->assertTrue($byte1->equals($byte2)); |
| 108 | + } |
| 109 | + |
| 110 | + /** |
| 111 | + * Test greater than comparison. |
| 112 | + */ |
| 113 | + public function testIsGreaterThan() |
| 114 | + { |
| 115 | + $byte1 = new Byte(200); |
| 116 | + $byte2 = new Byte(100); |
| 117 | + |
| 118 | + $this->assertTrue($byte1->isGreaterThan($byte2)); |
| 119 | + } |
| 120 | + |
| 121 | + /** |
| 122 | + * Test less than comparison. |
| 123 | + */ |
| 124 | + public function testIsLessThan() |
| 125 | + { |
| 126 | + $byte1 = new Byte(50); |
| 127 | + $byte2 = new Byte(100); |
| 128 | + |
| 129 | + $this->assertTrue($byte1->isLessThan($byte2)); |
| 130 | + } |
| 131 | + |
| 132 | + /** |
| 133 | + * Test converting byte to binary string. |
| 134 | + */ |
| 135 | + public function testToBinary() |
| 136 | + { |
| 137 | + $byte = new Byte(170); // 10101010 |
| 138 | + $this->assertEquals('10101010', $byte->toBinary()); |
| 139 | + } |
| 140 | + |
| 141 | + /** |
| 142 | + * Test converting byte to hexadecimal string. |
| 143 | + */ |
| 144 | + public function testToHex() |
| 145 | + { |
| 146 | + $byte = new Byte(170); // 0xAA |
| 147 | + $this->assertEquals('AA', $byte->toHex()); |
| 148 | + } |
| 149 | + |
| 150 | + /** |
| 151 | + * Test creating a byte from binary string. |
| 152 | + */ |
| 153 | + public function testFromBinary() |
| 154 | + { |
| 155 | + $byte = Byte::fromBinary('10101010'); |
| 156 | + $this->assertEquals(170, $byte->getValue()); |
| 157 | + } |
| 158 | + |
| 159 | + /** |
| 160 | + * Test creating a byte from hexadecimal string. |
| 161 | + */ |
| 162 | + public function testFromHex() |
| 163 | + { |
| 164 | + $byte = Byte::fromHex('AA'); |
| 165 | + $this->assertEquals(170, $byte->getValue()); |
| 166 | + } |
| 167 | + |
| 168 | + /** |
| 169 | + * Test adding a value to the byte and wrapping around at 255. |
| 170 | + */ |
| 171 | + public function testAddWithOverflow() |
| 172 | + { |
| 173 | + $byte = new Byte(250); |
| 174 | + $result = $byte->add(10); |
| 175 | + |
| 176 | + $this->assertEquals(4, $result->getValue()); // 250 + 10 = 260, wrapped to 4 |
| 177 | + } |
| 178 | + |
| 179 | + /** |
| 180 | + * Test subtracting a value from the byte and wrapping around at 0. |
| 181 | + */ |
| 182 | + public function testSubtractWithUnderflow() |
| 183 | + { |
| 184 | + $byte = new Byte(5); |
| 185 | + $result = $byte->subtract(10); |
| 186 | + |
| 187 | + $this->assertEquals(251, $result->getValue()); // 5 - 10 = -5, wrapped to 251 |
| 188 | + } |
| 189 | + |
| 190 | + /** |
| 191 | + * Test string representation of the byte. |
| 192 | + */ |
| 193 | + public function testToString() |
| 194 | + { |
| 195 | + $byte = new Byte(100); |
| 196 | + $this->assertEquals('100', (string) $byte); |
| 197 | + } |
| 198 | +} |
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