Implement year range extension.

When the selected value is outside of the year bounds, the year range
should be extended to include the selected value.

Author: markstory

src/View/Input/DateTime.php

@@ -179,6 +179,9 @@ public function yearSelect($options = []) {
 			'options' => []
 		];
 
+		$options['start'] = min($options['val'], $options['start']);
+		$options['end'] = max($options['val'], $options['end']);
+
 		if (empty($options['options'])) {
 			$options['options'] = $this->_generateNumbers($options['start'], $options['end']);
 		}

tests/TestCase/View/Input/DateTimeTest.php

@@ -193,8 +193,62 @@ public function testRenderYearWidgetOrdering() {
 		$this->assertTags($result, $expected);
 	}
 
+/**
+ * Test that a selected value outside of the chosen
+ * year boundary is also included as an option.
+ *
+ * @return void
+ */
 	public function testRenderYearWidgetValueOutOfBounds() {
-		$this->markTestIncomplete();
+		$now = new \DateTime('2010-01-01 12:00:00');
+		$result = $this->DateTime->render([
+			'name' => 'date',
+			'year' => [
+				'start' => 2013,
+				'end' => 2015,
+			],
+			'month' => false,
+			'day' => false,
+			'hour' => false,
+			'minute' => false,
+			'second' => false,
+			'val' => $now,
+		]);
+		$expected = [
+			'select' => ['name' => 'date[year]'],
+			['option' => ['value' => '2010', 'selected' => 'selected']], '2010', '/option',
+			['option' => ['value' => '2011']], '2011', '/option',
+			['option' => ['value' => '2012']], '2012', '/option',
+			['option' => ['value' => '2013']], '2013', '/option',
+			['option' => ['value' => '2014']], '2014', '/option',
+			['option' => ['value' => '2015']], '2015', '/option',
+			'/select',
+		];
+		$this->assertTags($result, $expected);
+
+		$now = new \DateTime('2013-01-01 12:00:00');
+		$result = $this->DateTime->render([
+			'name' => 'date',
+			'year' => [
+				'start' => 2010,
+				'end' => 2011,
+			],
+			'month' => false,
+			'day' => false,
+			'hour' => false,
+			'minute' => false,
+			'second' => false,
+			'val' => $now,
+		]);
+		$expected = [
+			'select' => ['name' => 'date[year]'],
+			['option' => ['value' => '2010']], '2010', '/option',
+			['option' => ['value' => '2011']], '2011', '/option',
+			['option' => ['value' => '2012']], '2012', '/option',
+			['option' => ['value' => '2013', 'selected' => 'selected']], '2013', '/option',
+			'/select',
+		];
+		$this->assertTags($result, $expected);
 	}
 
 	public function testRenderMonthWidget() {