add MAX and MIN to functionbuilder

Signed-off-by: Robin Appelman <robin@icewind.nl>

1 files changed, 78 insertions, 0 deletions

diff --git a/tests/lib/DB/QueryBuilder/FunctionBuilderTest.php b/tests/lib/DB/QueryBuilder/FunctionBuilderTest.php
index 136650741f5..a8af7f4fe07 100644
--- a/tests/lib/DB/QueryBuilder/FunctionBuilderTest.php
+++ b/tests/lib/DB/QueryBuilder/FunctionBuilderTest.php
@@ -120,4 +120,82 @@ class FunctionBuilderTest extends TestCase {
 
 		$this->assertGreaterThan(1, $query->execute()->fetchColumn());
 	}
+
+	private function setUpMinMax($value) {
+		$query = $this->connection->getQueryBuilder();
+
+		$query->insert('appconfig')
+			->values([
+				'appid' => $query->createNamedParameter('minmax'),
+				'configkey' => $query->createNamedParameter(uniqid()),
+				'configvalue' => $query->createNamedParameter((string)$value),
+			]);
+		$query->execute();
+	}
+
+	private function clearMinMax() {
+		$query = $this->connection->getQueryBuilder();
+
+		$query->delete('appconfig')
+			->where($query->expr()->eq('appid', $query->createNamedParameter('minmax')));
+		$query->execute();
+	}
+
+	public function testMaxEmpty() {
+		$this->clearMinMax();
+
+		$query = $this->connection->getQueryBuilder();
+
+		$query->select($query->func()->max($query->expr()->castColumn('configvalue', IQueryBuilder::PARAM_INT)));
+		$query->from('appconfig')
+			->where($query->expr()->eq('appid', $query->createNamedParameter('minmax')))
+			->setMaxResults(1);
+
+		$this->assertEquals(null, $query->execute()->fetchColumn());
+	}
+
+	public function testMinEmpty() {
+		$this->clearMinMax();
+
+		$query = $this->connection->getQueryBuilder();
+
+		$query->select($query->func()->min($query->expr()->castColumn('configvalue', IQueryBuilder::PARAM_INT)));
+		$query->from('appconfig')
+			->where($query->expr()->eq('appid', $query->createNamedParameter('minmax')))
+			->setMaxResults(1);
+
+		$this->assertEquals(null, $query->execute()->fetchColumn());
+	}
+
+	public function testMax() {
+		$this->clearMinMax();
+		$this->setUpMinMax(10);
+		$this->setUpMinMax(11);
+		$this->setUpMinMax(20);
+
+		$query = $this->connection->getQueryBuilder();
+
+		$query->select($query->func()->max($query->expr()->castColumn('configvalue', IQueryBuilder::PARAM_INT)));
+		$query->from('appconfig')
+			->where($query->expr()->eq('appid', $query->createNamedParameter('minmax')))
+			->setMaxResults(1);
+
+		$this->assertEquals(20, $query->execute()->fetchColumn());
+	}
+
+	public function testMin() {
+		$this->clearMinMax();
+		$this->setUpMinMax(10);
+		$this->setUpMinMax(11);
+		$this->setUpMinMax(20);
+
+		$query = $this->connection->getQueryBuilder();
+
+		$query->select($query->func()->min($query->expr()->castColumn('configvalue', IQueryBuilder::PARAM_INT)));
+		$query->from('appconfig')
+			->where($query->expr()->eq('appid', $query->createNamedParameter('minmax')))
+			->setMaxResults(1);
+
+		$this->assertEquals(10, $query->execute()->fetchColumn());
+	}
 }