FIO-8597: fixed an issue with an empty array value for a number component with multiple values enabled

Author: KatrinKhilko

src/process/validation/rules/__tests__/validateNumber.test.ts

@@ -39,3 +39,16 @@ it('Validating a multiple number with a blank value will return null', async ()
     const result = await validateMultiple(context);
     expect(result).to.equal(null);
 });
+
+it('Validating a multiple number with an empty array value will return null', async () => {
+    const component = {
+        ...simpleNumberField,
+        multiple: true
+    };
+    const data = {
+        component: [],
+    };
+    const context = generateProcessorContext(component, data);
+    const result = await validateMultiple(context);
+    expect(result).to.equal(null);
+});

src/process/validation/rules/validateNumber.ts

@@ -11,6 +11,9 @@ export const shouldValidate = (context: ValidationContext) => {
     if (!value) {
         return false;
     }
+    if (component.multiple && Array.isArray(value) && value.length === 0) {
+        return false;
+    }
     if (!isValidatableNumberComponent(component)) {
         return false;
     }