null, 'key2' => null]; $keys = ['key1', 'key2', 'key3']; $result = $this->hasAllKeys($data, $keys); $this->assertFalse($result); } public function testHasAllKeysTrueOnExtraKeys() { $data = ['key1' => null, 'key2' => null, 'key3' => null]; $keys = ['key1', 'key2']; $result = $this->hasAllKeys($data, $keys); $this->assertTrue($result); } }