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79 lines
2.4 KiB
PHP
79 lines
2.4 KiB
PHP
<?php
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/**
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* Helper for the DateTime_diff_add_sub* tests
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*
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* @author Daniel Convissor <danielc@analysisandsolutions.com>
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*/
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/**
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* Provides a consistent interface for executing date diff tests
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*
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* Tests the diff() method then passes the resulting
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* interval to the add()/sub() method as a double check
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*
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* @param string|DateTime $end_date the end date in YYYY-MM-DD format
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* (can include time HH:MM:SS) or a DateTime object
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* @param string|DateTime $start_date the start date in YYYY-MM-DD format
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* (can include time HH:MM:SS) or a DateTime object
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* @param string $expect_spec the expected result of the tests, in the
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* special interval specification used for this test suite.
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* This spec includes a "+" or "-" after the "P" in order to
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* indicate which direction to go.
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* @param int $expect_days the number of days to compare with the
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* interval's "days" property
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* @param bool $absolute should the result always be a positive number?
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*
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* @return void
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*/
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function examine_diff($end_date, $start_date, $expect_spec, $expect_days, $absolute = false) {
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if (is_string($start_date)) {
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$start = new DateTime($start_date);
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} else {
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$start = $start_date;
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}
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$start_date = $start->format('Y-m-d H:i:s T');
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if (is_string($end_date)) {
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$end = new DateTime($end_date);
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} else {
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$end = $end_date;
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}
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$end_date = $end->format('Y-m-d H:i:s T');
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$force_sub = false;
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if ($absolute) {
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$tmp_interval = $start->diff($end);
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if ($tmp_interval->format('%r')) {
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$force_sub = true;
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}
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}
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$result_interval = $start->diff($end, $absolute);
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$result_spec = $result_interval->format('P%R%yY%mM%dDT%hH%iM%sS');
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$result_days = $result_interval->format('%a');
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// Also make sure add()/sub() works the same way as diff().
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if ($force_sub) {
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$start->sub($result_interval);
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$sign = '-';
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} else {
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$start->add($result_interval);
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$sign = '+';
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}
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$result_end_date = $start->format('Y-m-d H:i:s T');
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// Leaving this here for making adjustments later.
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$expect_full = "FWD: $end_date - $start_date = **$expect_spec** | "
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. "BACK: $start_date $sign $expect_spec = **$end_date** | "
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. "DAYS: **$expect_days**";
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// echo "$expect_full\n";
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// return;
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$result_full = "FWD: $end_date - $start_date = **$result_spec** | "
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. "BACK: $start_date $sign $result_spec = **$result_end_date** | "
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. "DAYS: **$result_days**";
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echo "$result_full\n";
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}
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