Add DateTimeValidationTest class

tests/DateTimeValidatorTest.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace ipl\Tests\Validator;
+
+use DateTime;
+use ipl\I18n\NoopTranslator;
+use ipl\I18n\StaticTranslator;
+use ipl\Validator\DateTimeValidator;
+
+class DateTimeValidatorTest extends TestCase
+{
+    public function testDateTimeValidatorWithValidDateTime()
+    {
+        StaticTranslator::$instance = new NoopTranslator();
+        $this->assertTrue((new DateTimeValidator())->isValid(new DateTime()), 'current date is a valid date');
+    }
+
+    public function testDateTimeValidatorWithFalseAsDateTimeValue()
+    {
+        StaticTranslator::$instance = new NoopTranslator();
+        $validator = new DateTimeValidator();
+
+        $this->assertFalse($validator->isValid(false), 'false is not a valid date');
+    }
+
+    public function testDateTimeValidatorWithStringAsDateTimeValue()
+    {
+        StaticTranslator::$instance = new NoopTranslator();
+        $validator = new DateTimeValidator();
+
+        $this->assertTrue($validator->isValid('2021-02-15T15:03:01'), '15th Feb is a valid date');
+        $this->assertFalse($validator->isValid('2021-02-31T15:03:01'), '31st Feb is not a valid date');
+        $this->assertFalse($validator->isValid('2021-02-03T26:03:01'), "26 o'clock is not a valid time");
+        $this->assertFalse($validator->isValid(''), 'Empty value is not a valid date');
+    }
+}