Validate empty Show On Map options (#2631)

src/core/operations/ShowOnMap.mjs

@@ -36,7 +36,8 @@ class ShowOnMap extends Operation {
             {
                 name: "Input Format",
                 type: "option",
-                value: ["Auto"].concat(FORMATS)
+                value: ["Auto"].concat(FORMATS),
+                allowEmpty: false
             },
             {
                 name: "Input Delimiter",
@@ -49,7 +50,8 @@ class ShowOnMap extends Operation {
                     "Comma",
                     "Semi-colon",
                     "Colon"
-                ]
+                ],
+                allowEmpty: false
             }
         ];
     }

tests/operations/tests/ShowOnMap.mjs

@@ -36,4 +36,26 @@ TestRegister.addTests([
             },
         ],
     },
+    {
+        name: "Show on map: empty input format is rejected",
+        input: "1, 24",
+        expectedOutput: "Input Format cannot be empty.",
+        recipeConfig: [
+            {
+                op: "Show on map",
+                args: [13, "", "Auto"]
+            },
+        ],
+    },
+    {
+        name: "Show on map: empty input delimiter is rejected",
+        input: "1, 24",
+        expectedOutput: "Input Delimiter cannot be empty.",
+        recipeConfig: [
+            {
+                op: "Show on map",
+                args: [13, "Auto", ""]
+            },
+        ],
+    },
 ]);