Update image annotation tests

Author: lehecht

tests/php/ImageAnnotationTest.php

@@ -111,23 +111,23 @@ public function testValidatePointsEllipse()
     public function testValidatePointsLine()
     {
         $this->model->shape_id = Shape::lineId();
-        $this->model->validatePoints([10, 10]);
+        $this->model->validatePoints([10, 10, 20, 20]);
         $this->expectException(Exception::class);
         $this->model->validatePoints([10]);
     }
 
     public function testValidatePointsPolygon()
     {
         $this->model->shape_id = Shape::polygonId();
-        $this->model->validatePoints([10, 10]);
+        $this->model->validatePoints([10, 10, 20, 20, 30, 30, 10 ,10]);
         $this->expectException(Exception::class);
-        $this->model->validatePoints([10]);
+        $this->model->validatePoints([10, 10]);
     }
 
     public function testValidatePointsPolygonFirstLastEqual()
     {
         $this->model->shape_id = Shape::polygonId();
-        $this->model->validatePoints([10, 10, 20, 20, 10, 10]);
+        $this->model->validatePoints([10, 10, 20, 20, 30, 30, 10, 10]);
         $this->expectException(Exception::class);
         $this->model->validatePoints([10, 10, 20, 20, 30, 30]);
     }