Move assorted tests from integration to unit [MAILPOET-2009]

tests/unit/Form/Block/DateTest.php

@@ -0,0 +1,59 @@
+<?php
+namespace MailPoet\Test\Form\Block;
+
+use MailPoet\Form\Block\Date;
+
+class DateTest extends \MailPoetUnitTest {
+  function testItCanConvertDateMonthYearFormatToDatetime() {
+    $date = array(
+      'MM/DD/YYYY' => '05/10/2016',
+      'DD/MM/YYYY' => '10/05/2016',
+      'YYYY/MM/DD' => '2016/05/10',
+      'YYYY/DD/MM' => '2016/10/05'
+    );
+    foreach ($date as $date_format => $date) {
+      expect(Date::convertDateToDatetime($date, $date_format))
+        ->equals('2016-05-10 00:00:00');
+    }
+  }
+
+  function testItCanConvertMonthYearFormatToDatetime() {
+    $date = array(
+      'MM/YYYY' => '05/2016',
+      'YYYY/MM' => '2016/05'
+    );
+    foreach ($date as $date_format => $date) {
+      expect(Date::convertDATEToDatetime($date, $date_format))
+        ->equals('2016-05-01 00:00:00');
+    }
+  }
+
+  function testItCanConvertMonthToDatetime() {
+    $current_year = date('Y');
+    expect(Date::convertDateToDatetime('05', 'MM'))
+      ->equals(sprintf('%s-05-01 00:00:00', $current_year));
+  }
+
+  function testItCanConvertYearToDatetime() {
+    expect(Date::convertDateToDatetime('2016', 'YYYY'))
+      ->equals('2016-01-01 00:00:00');
+  }
+
+  function testItCanConvertDatetimeToDatetime() {
+    expect(Date::convertDateToDatetime('2016-05-10 00:00:00', 'datetime'))
+      ->equals('2016-05-10 00:00:00');
+  }
+
+  function testItCanClearDate() {
+    expect(Date::convertDateToDatetime('0/10/5', 'YYYY/MM/DD'))
+      ->equals(date('Y') . '-10-05 00:00:00');
+    expect(Date::convertDateToDatetime('0/0/5', 'YYYY/MM/DD'))
+      ->equals(date('Y') . '-' . date('m') . '-05 00:00:00');
+    expect(Date::convertDateToDatetime('0/0/0', 'YYYY/MM/DD'))
+      ->equals('');
+    expect(Date::convertDateToDatetime('0', 'YYYY'))
+      ->equals('');
+    expect(Date::convertDateToDatetime('0', 'MM'))
+      ->equals('');
+  }
+}