silverstripe-framework/tests/model/DatetimeTest.php

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<?php
/**
* Tests for {@link SS_Datetime} class.
*
* @todo Current date comparisons are slightly dodgy, as they only compare
* the current date (not hour, minute, second) and assume that the date
* doesn't switch throughout the test execution. This means tests might
* fail when run at 23:59:59.
*
* @package framework
* @subpackage tests
*/
class SS_DatetimeTest extends SapphireTest {
function testNowWithSystemDate() {
$systemDatetime = DBField::create_field('SS_Datetime', date('Y-m-d H:i:s'));
$nowDatetime = SS_Datetime::now();
$this->assertEquals($systemDatetime->Date(), $nowDatetime->Date());
}
function testNowWithMockDate() {
// Test setting
$mockDate = '2001-12-31 22:10:59';
SS_Datetime::set_mock_now($mockDate);
$systemDatetime = DBField::create_field('SS_Datetime', date('Y-m-d H:i:s'));
$nowDatetime = SS_Datetime::now();
$this->assertNotEquals($systemDatetime->Date(), $nowDatetime->Date());
$this->assertEquals($nowDatetime->getValue(), $mockDate);
// Test clearing
SS_Datetime::clear_mock_now();
$systemDatetime = DBField::create_field('SS_Datetime', date('Y-m-d H:i:s'));
$nowDatetime = SS_Datetime::now();
$this->assertEquals($systemDatetime->Date(), $nowDatetime->Date());
}
function testSetNullAndZeroValues() {
$date = DBField::create_field('SS_Datetime', '');
$this->assertNull($date->getValue(), 'Empty string evaluates to NULL');
$date = DBField::create_field('SS_Datetime', null);
$this->assertNull($date->getValue(), 'NULL is set as NULL');
$date = DBField::create_field('SS_Datetime', false);
$this->assertNull($date->getValue(), 'Boolean FALSE evaluates to NULL');
$date = DBField::create_field('SS_Datetime', '0');
$this->assertEquals('1970-01-01 00:00:00', $date->getValue(), 'String zero is UNIX epoch time');
$date = DBField::create_field('SS_Datetime', 0);
$this->assertEquals('1970-01-01 00:00:00', $date->getValue(), 'Numeric zero is UNIX epoch time');
}
}