public function testUppercase() { $upperCase = _String::upper_case(); $data = 'agasg4'; $this->assertInstanceOf(StringUpperCase::class, $upperCase); $this->assertInstanceOf(AbstractStringNode::class, $upperCase); $this->assertEquals('AGASG4', $upperCase($data)); }
/** * @return AbstractStringNode */ public function upper_case() { return $this->then(_String::upper_case()); }