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<?php |
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use Litipk\BigNumbers\Decimal as Decimal; |
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use PHPUnit\Framework\TestCase; |
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date_default_timezone_set('UTC'); |
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class DecimalEqualsTest extends TestCase |
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{ |
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public function testSimpleEquals() |
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{ |
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// Transitivity & inter-types constructors compatibility |
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$this->assertTrue(Decimal::fromInteger(1)->equals(Decimal::fromString("1"))); |
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$this->assertTrue(Decimal::fromString("1")->equals(Decimal::fromFloat(1.0))); |
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$this->assertTrue(Decimal::fromInteger(1)->equals(Decimal::fromFloat(1.0))); |
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// Reflexivity |
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$this->assertTrue(Decimal::fromInteger(1)->equals(Decimal::fromInteger(1))); |
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// Symmetry |
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$this->assertTrue(Decimal::fromString("1")->equals(Decimal::fromInteger(1))); |
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$this->assertTrue(Decimal::fromFloat(1.0)->equals(Decimal::fromString("1"))); |
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$this->assertTrue(Decimal::fromFloat(1.0)->equals(Decimal::fromInteger(1))); |
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} |
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public function testSimpleNotEquals() |
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{ |
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// Symmetry |
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$this->assertFalse(Decimal::fromInteger(1)->equals(Decimal::fromInteger(2))); |
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$this->assertFalse(Decimal::fromInteger(2)->equals(Decimal::fromInteger(1))); |
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$this->assertFalse(Decimal::fromFloat(1.01)->equals(Decimal::fromInteger(1))); |
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$this->assertFalse(Decimal::fromInteger(1)->equals(Decimal::fromFloat(1.01))); |
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} |
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public function testScaledEquals() |
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{ |
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// Transitivity |
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$this->assertTrue(Decimal::fromFloat(1.001)->equals(Decimal::fromFloat(1.01), 1)); |
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$this->assertTrue(Decimal::fromFloat(1.01)->equals(Decimal::fromFloat(1.004), 1)); |
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$this->assertTrue(Decimal::fromFloat(1.001)->equals(Decimal::fromFloat(1.004), 1)); |
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// Reflexivity |
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$this->assertTrue(Decimal::fromFloat(1.00525)->equals(Decimal::fromFloat(1.00525), 2)); |
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// Symmetry |
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$this->assertTrue(Decimal::fromFloat(1.01)->equals(Decimal::fromFloat(1.001), 1)); |
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$this->assertTrue(Decimal::fromFloat(1.004)->equals(Decimal::fromFloat(1.01), 1)); |
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$this->assertTrue(Decimal::fromFloat(1.004)->equals(Decimal::fromFloat(1.001), 1)); |
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// Proper rounding |
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$this->assertTrue(Decimal::fromFloat(1.004)->equals(Decimal::fromFloat(1.000), 2)); |
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// Warning, float to Decimal conversion can have unexpected behaviors, like converting |
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// 1.005 to Decimal("1.0049999999999999") |
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$this->assertTrue(Decimal::fromFloat(1.0050000000001)->equals(Decimal::fromFloat(1.010), 2)); |
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$this->assertTrue(Decimal::fromString("1.005")->equals(Decimal::fromString("1.010"), 2)); |
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} |
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public function testScaledNotEquals() |
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{ |
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# Proper rounding |
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$this->assertFalse(Decimal::fromFloat(1.004)->equals(Decimal::fromFloat(1.0050000000001), 2)); |
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} |
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} |
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Litipk /
php-bignumbers
