tests : add unit test for empty value in qgs + docstring

Author: nworr

lizmap/modules/lizmap/lib/Project/Qgis/ProjectInfo.php

@@ -22,9 +22,9 @@
  * @property string                                    $version
  * @property string                                    $projectname
  * @property string                                    $title
- * @property null|string                               $saveDateTime
- * @property null|string                               $saveUser
- * @property null|string                               $saveUserFull
+ * @property string                                    $saveDateTime
+ * @property string                                    $saveUser
+ * @property string                                    $saveUserFull
  * @property SpatialRefSys                             $projectCrs
  * @property ProjectProperties                         $properties
  * @property LayerTreeRoot                             $layerTreeRoot

tests/units/classes/Project/Qgis/ProjectInfoTest.php

@@ -262,4 +262,23 @@ public function testJsonEncode(): void
         $this->assertNotNull($json);
         $this->assertStringStartsWith('{"version":', $json);
     }
+
+    public function testProjetWithMissingProjetInfo(): void
+    {
+        $xml_path_invalid = __DIR__.'/../../Project/Ressources/project_empty_qgis_tag.qgs';
+
+        $oXml = App\XmlTools::xmlReaderFromFile($xml_path_invalid);
+        $project = Qgis\ProjectInfo::fromXmlReader($oXml);
+        // missing values on XML will be empty string
+        $emptyProps = array(
+            'version',
+            'projectname',
+            'saveDateTime',
+            'saveUser',
+            'saveUserFull',
+        );
+        foreach ($emptyProps as $prop ) {
+            $this->assertEmpty($project->{$prop});
+        }
+    }
 }