feat: add validate method, add test. Resolve #129

src/classes/DependencyQueue.ts

@@ -6,7 +6,7 @@ import FormError from "./FormError";
  * При добавлении элемента устанавливается значение родителя, а также добавление в массив.
  * При удалении значение родителя сбрасывается.
  * */
-export default class DependencyQueue<T extends DependencyItem> {
+export default class DependencyQueue<T extends (DependencyItem & Record<string, any>)> {
 	private array: T[] = []
 	private readonly form: Form
 

src/classes/Form.ts

@@ -661,6 +661,20 @@ export default class Form extends EventEmitter implements FormDependence {
 
         return !this.#availabilities[nearestName];
     }
+
+    /**
+     * @description Method using for validate form and all child items.
+     * */
+    validate(): boolean {
+        const result = this.dependencies.reduce((acc, dep) => {
+            if (typeof dep.validate === "function") acc = acc && !!dep.validate();
+            return acc;
+        }, true);
+
+        debug.msg(`Validation ${result ? 'successful' : 'failed'}`);
+
+        return result;
+    }
 
 }
 

tests/units/form/form-validate.spec.ts

@@ -0,0 +1,54 @@
+import Form from "../../../src/classes/Form";
+
+describe("Form validate", () => {
+
+    test("Should return true if not validate functions was provided.", () => {
+        const form = new Form();
+        expect(form.validate()).toBe(true)
+    })
+    test("Should return false in first execute if child validate function return false", () => {
+        const form = new Form();
+        const child = {
+            name: "address",
+            count: -1,
+            validate() {
+                return this.count++ >= 0
+            }
+        }
+        form.subscribe(child);
+        expect(form.validate()).toBe(false);
+        expect(form.validate()).toBe(true);
+    })
+    test("Should be true if all children return true", () => {
+        const form = new Form();
+        for(let i = 0; i < 10; i++) {
+            form.subscribe({
+                name: `dep-${i}`,
+                validate() {
+                    return true
+                }
+            })
+        }
+        expect(form.validate()).toBe(true)
+    })
+    test("Child form with children validation items", () => {
+        const form = new Form();
+        const child = new Form({
+            name: "address"
+        })
+        form.subscribe(child)
+        child.subscribe({
+            name: "city",
+            index: 0,
+            validate() {
+                console.log(this.index > 0)
+
+                return this.index++ > 0
+            }
+        })
+
+        expect(form.validate()).toBe(false)
+        expect(form.validate()).toBe(true)
+    })
+
+})