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<?php
/**
* Helper for the DateTime diff/days/math tests
*
* @author Daniel Convissor <danielc@analysisandsolutions.com>
*/
/**#@+
* Which test segments should be displayed?
*/
define('PHPT_DATETIME_SHOW_DIFF', 1);
define('PHPT_DATETIME_SHOW_DAYS', 2);
define('PHPT_DATETIME_SHOW_ADD', 3);
define('PHPT_DATETIME_SHOW_SUB', 4);
/**#@-*/
/**
* Provides a consistent interface for executing date diff/add/sub tests
*
* @param string|DateTime $end_date the end date in YYYY-MM-DD format
* (can include time HH:MM:SS) or a DateTime object
* @param string|DateTime $start_date the start date in YYYY-MM-DD format
* (can include time HH:MM:SS) or a DateTime object
* @param string $expect_spec the expected result of the tests, in the
* special interval specification used for this test suite.
* This spec includes a "+" or "-" after the "P" in order to
* indicate which direction to go.
* @param int $expect_days the number of days to compare with the
* interval's "days" property
* @param bool $absolute should the result always be a positive number?
*
* @return void
*/
function examine_diff($end_date, $start_date, $expect_spec, $expect_days, $absolute = false) {
if (is_string($start_date)) {
$start = new DateTime($start_date);
} else {
$start = $start_date;
}
$start_date = $start->format('Y-m-d H:i:s T');
if (is_string($end_date)) {
$end = new DateTime($end_date);
} else {
$end = $end_date;
}
$end_date = $end->format('Y-m-d H:i:s T');
$expect_interval = new DateInterval('P' . substr($expect_spec, 2));
if (substr($expect_spec, 1, 1) == '-') {
$expect_interval->invert = true;
}
if (PHPT_DATETIME_SHOW == PHPT_DATETIME_SHOW_DIFF) {
$result_interval = $start->diff($end, $absolute);
$result_spec = $result_interval->format('P%R%yY%mM%dDT%hH%iM%sS');
echo "DIFF: $end_date - $start_date = **$result_spec**\n";
// echo "DIFF: $end_date - $start_date = **$expect_spec**\n";
}
if (PHPT_DATETIME_SHOW == PHPT_DATETIME_SHOW_DAYS) {
$result_interval = $start->diff($end, $absolute);
$result_days = $result_interval->format('%a');
echo "DAYS: **$result_days**\n";
// echo "DAYS: **$expect_days**\n";
}
if (PHPT_DATETIME_SHOW == PHPT_DATETIME_SHOW_ADD) {
$start->add($expect_interval);
$result_end_date = $start->format('Y-m-d H:i:s T');
echo "ADD: $start_date + $expect_spec = **$result_end_date**\n";
}
if (PHPT_DATETIME_SHOW == PHPT_DATETIME_SHOW_SUB) {
$end->sub($expect_interval);
$result_start_date = $end->format('Y-m-d H:i:s T');
echo "SUB: $end_date - $expect_spec = **$result_start_date**\n";
// echo "SUB: $end_date - $expect_spec = **$start_date**\n";
}
}
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