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EuroTest.php
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EuroTest.php
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<?php
declare( strict_types = 1 );
namespace WMDE\Euro\Tests\Unit;
use PHPUnit\Framework\TestCase;
use WMDE\Euro\Euro;
/**
* @covers \WMDE\Euro\Euro
*
* @license GNU GPL v2+
* @author Jeroen De Dauw < jeroendedauw@gmail.com >
*/
class EuroTest extends TestCase {
/**
* @dataProvider unsignedIntegerProvider
*/
public function testGetCentsReturnsConstructorArgument( int $unsignedInteger ) {
$amount = Euro::newFromCents( $unsignedInteger );
$this->assertSame( $unsignedInteger, $amount->getEuroCents() );
}
public function unsignedIntegerProvider() {
return [
[ 0 ], [ 1 ], [ 2 ], [ 9 ], [ 10 ], [ 11 ],
[ 99 ], [ 100 ], [ 101 ], [ 999 ], [ 1000 ], [ 1001 ],
];
}
public function testGivenZero_getEuroFloatReturnsZeroFloat() {
$amount = Euro::newFromCents( 0 );
$this->assertExactFloat( 0.0, $amount->getEuroFloat() );
$this->assertNotSame( 0, $amount->getEuroFloat() );
}
private function assertExactFloat( float $expected, $actual ) {
$this->assertInternalType( 'float', $actual );
$this->assertEquals( $expected, $actual, '', 0 );
}
public function testGivenOneEuro_getEuroFloatReturnsOne() {
$amount = Euro::newFromCents( 100 );
$this->assertExactFloat( 1.0, $amount->getEuroFloat() );
}
public function testGivenOneCent_getEuroFloatReturnsPointZeroOne() {
$amount = Euro::newFromCents( 1 );
$this->assertExactFloat( 0.01, $amount->getEuroFloat() );
}
public function testGiven33cents_getEuroFloatReturnsPointThreeThree() {
$amount = Euro::newFromCents( 33 );
$this->assertExactFloat( 0.33, $amount->getEuroFloat() );
}
public function testGivenNegativeAmount_constructorThrowsException() {
$this->expectException( \InvalidArgumentException::class );
Euro::newFromCents( -1 );
}
public function testGivenZero_getEuroStringReturnsZeroString() {
$amount = Euro::newFromCents( 0 );
$this->assertSame( '0.00', $amount->getEuroString() );
}
public function testGivenOneEuro_getEuroStringReturnsOnePointZeroZero() {
$amount = Euro::newFromCents( 100 );
$this->assertSame( '1.00', $amount->getEuroString() );
}
public function testGivenTwoEuros_getEuroStringReturnsTwoPointZeroZero() {
$amount = Euro::newFromCents( 200 );
$this->assertSame( '2.00', $amount->getEuroString() );
}
public function testGivenOneCent_getEuroStringReturnsZeroPointZeroOne() {
$amount = Euro::newFromCents( 1 );
$this->assertSame( '0.01', $amount->getEuroString() );
}
public function testGivenTenCents_getEuroStringReturnsZeroPointOneZero() {
$amount = Euro::newFromCents( 10 );
$this->assertSame( '0.10', $amount->getEuroString() );
}
public function testGiven1234Cents_getEuroStringReturns12euro34() {
$amount = Euro::newFromCents( 1234 );
$this->assertSame( '12.34', $amount->getEuroString() );
}
public function testGiven9876Cents_stringCastingReturns98euro76() {
$amount = Euro::newFromCents( 9876 );
$this->assertSame( '98.76', (string) $amount );
}
public function testGivenEuroAmount_jsonEncodeWillEncodeProperly() {
$amount = Euro::newFromCents( 9876 );
$this->assertSame( '"98.76"', json_encode( $amount ) );
}
public function testOneEuroString_getsTurnedInto100cents() {
$this->assertSame( 100, Euro::newFromString( '1.00' )->getEuroCents() );
}
public function testOneCentString_getsTurnedInto1cents() {
$this->assertSame( 1, Euro::newFromString( '0.01' )->getEuroCents() );
}
public function testTenCentString_getsTurnedInto10cents() {
$this->assertSame( 10, Euro::newFromString( '0.10' )->getEuroCents() );
}
public function testShortTenCentString_getsTurnedInto10cents() {
$this->assertSame( 10, Euro::newFromString( '0.1' )->getEuroCents() );
}
public function testShortOneEuroString_getsTurnedInto100cents() {
$this->assertSame( 100, Euro::newFromString( '1' )->getEuroCents() );
}
public function testOneDecimalOneEuroString_getsTurnedInto100cents() {
$this->assertSame( 100, Euro::newFromString( '1.0' )->getEuroCents() );
}
public function testMultiDecimalOneEuroString_getsTurnedInto100cents() {
$this->assertSame( 100, Euro::newFromString( '1.00000' )->getEuroCents() );
}
public function testHandlingOfLargeEuroString() {
$this->assertSame( 3133742, Euro::newFromString( '31337.42' )->getEuroCents() );
}
public function testEuroStringThatCausedRoundingError_doesNotCauseRoundingError() {
// Regression test for https://phabricator.wikimedia.org/T183481
$this->assertSame( 870, Euro::newFromString( '8.70' )->getEuroCents() );
$this->assertSame( 920, Euro::newFromString( '9.20' )->getEuroCents() );
}
public function testEuroStringWithRoundingError_getsRoundedAppropriately() {
$this->assertSame( 101, Euro::newFromString( '1.0100000001' )->getEuroCents() );
$this->assertSame( 101, Euro::newFromString( '1.010000009999' )->getEuroCents() );
$this->assertSame( 101, Euro::newFromString( '1.011' )->getEuroCents() );
$this->assertSame( 101, Euro::newFromString( '1.014' )->getEuroCents() );
$this->assertSame( 101, Euro::newFromString( '1.0149' )->getEuroCents() );
$this->assertSame( 102, Euro::newFromString( '1.015' )->getEuroCents() );
$this->assertSame( 102, Euro::newFromString( '1.019' )->getEuroCents() );
$this->assertSame( 102, Euro::newFromString( '1.0199999' )->getEuroCents() );
$this->assertSame( 870, Euro::newFromString( '8.701' )->getEuroCents() );
$this->assertSame( 870, Euro::newFromString( '8.70499' )->getEuroCents() );
$this->assertSame( 871, Euro::newFromString( '8.705' )->getEuroCents() );
$this->assertSame( 871, Euro::newFromString( '8.705000' )->getEuroCents() );
$this->assertSame( 871, Euro::newFromString( '8.705001' )->getEuroCents() );
$this->assertSame( 871, Euro::newFromString( '8.709999' )->getEuroCents() );
}
public function testGivenNegativeAmountString_exceptionIsThrown() {
$this->expectException( \InvalidArgumentException::class );
Euro::newFromString( '-1.00' );
}
public function testGivenStringWithComma_exceptionIsThrown() {
$this->expectException( \InvalidArgumentException::class );
Euro::newFromString( '1,00' );
}
public function testGivenStringWithMultipleDots_ExceptionIsThrown() {
$this->expectException( \InvalidArgumentException::class );
Euro::newFromString( '1.0.0' );
}
public function testGivenNonNumber_exceptionIsThrown() {
$this->expectException( \InvalidArgumentException::class );
Euro::newFromString( '1.00abc' );
}
public function testGivenNegativeFloatAmount_exceptionIsThrown() {
$this->expectException( \InvalidArgumentException::class );
Euro::newFromFloat( -1.00 );
}
public function testOneEuroFloat_getsTurnedInto100cents() {
$this->assertSame( 100, Euro::newFromFloat( 1.0 )->getEuroCents() );
}
public function testOneCentFloat_getsTurnedInto1cent() {
$this->assertSame( 1, Euro::newFromFloat( 0.01 )->getEuroCents() );
}
public function testTenCentFloat_getsTurnedInto10cents() {
$this->assertSame( 10, Euro::newFromFloat( 0.1 )->getEuroCents() );
}
public function testHandlingOfLargeEuroFloat() {
$this->assertSame( 3133742, Euro::newFromFloat( 31337.42 )->getEuroCents() );
}
public function testFloatWithRoundingError_getsRoundedAppropriately() {
$this->assertSame( 101, Euro::newFromFloat( 1.0100000001 )->getEuroCents() );
$this->assertSame( 101, Euro::newFromFloat( 1.010000009999 )->getEuroCents() );
$this->assertSame( 101, Euro::newFromFloat( 1.011 )->getEuroCents() );
$this->assertSame( 101, Euro::newFromFloat( 1.014 )->getEuroCents() );
$this->assertSame( 101, Euro::newFromFloat( 1.0149 )->getEuroCents() );
$this->assertSame( 102, Euro::newFromFloat( 1.015 )->getEuroCents() );
$this->assertSame( 102, Euro::newFromFloat( 1.019 )->getEuroCents() );
$this->assertSame( 102, Euro::newFromFloat( 1.0199999 )->getEuroCents() );
$this->assertSame( 870, Euro::newFromFloat( 8.70 )->getEuroCents() );
}
public function testZeroEuroIntegers_isZeroCents() {
$this->assertSame( 0, Euro::newFromInt( 0 )->getEuroCents() );
}
public function testOneEuroIntegers_is100cents() {
$this->assertSame( 100, Euro::newFromInt( 1 )->getEuroCents() );
}
public function test1337EuroIntegers_is133700cents() {
$this->assertSame( 133700, Euro::newFromInt( 1337 )->getEuroCents() );
}
public function testGivenNegativeIntegerAmount_exceptionIsThrown() {
$this->expectException( \InvalidArgumentException::class );
Euro::newFromInt( -1 );
}
/**
* @dataProvider euroProvider
* @param Euro $euro
*/
public function testEuroEqualsItself( Euro $euro ) {
$this->assertTrue( $euro->equals( clone $euro ) );
}
public function euroProvider() {
return [
[ Euro::newFromCents( 0 ) ],
[ Euro::newFromCents( 1 ) ],
[ Euro::newFromCents( 99 ) ],
[ Euro::newFromCents( 100 ) ],
[ Euro::newFromCents( 9999 ) ],
];
}
public function testOneCentDoesNotEqualOneEuro() {
$this->assertFalse( Euro::newFromCents( 1 )->equals( Euro::newFromInt( 1 ) ) );
}
public function testOneCentDoesNotEqualTwoCents() {
$this->assertFalse( Euro::newFromCents( 1 )->equals( Euro::newFromCents( 2 ) ) );
}
public function testOneCentDoesNotEqualOneEuroAndOneCent() {
$this->assertFalse( Euro::newFromCents( 1 )->equals( Euro::newFromCents( 101 ) ) );
}
public function test9001centsDoesNotEqual9000cents() {
$this->assertFalse( Euro::newFromCents( 9001 )->equals( Euro::newFromCents( 9000 ) ) );
}
}