Fixed #68

src/ruleManager.ts

@@ -7,7 +7,7 @@ export const DEFINED_RULES: Record<string, RuleFunction> = {
 };
 
 export const isRegistered = (name: string) => {
-  return DEFINED_RULES.includes(name);
+  return Object.keys(DEFINED_RULES).includes(name);
 };
 
 export const register = (

tests/ruleManager.test.ts

@@ -0,0 +1,48 @@
+import { beforeAll, describe, test, expect } from "vitest";
+import {
+  setLocales,
+  en,
+  ILocale,
+  isRegistered,
+  register,
+  validate,
+} from "../index";
+
+describe("isRegistered()", () => {
+  beforeAll(async () => {
+    setLocales(en as ILocale);
+  });
+
+  test("should check the unregistered rules", async () => {
+    const result = isRegistered("myRule");
+    expect(result).toBe(false);
+  });
+
+  test("should check the registered rules", async () => {
+    register(
+      "myRule",
+      () => {
+        return false;
+      },
+      {
+        en: "My rule throws an error!",
+      }
+    );
+    const result = isRegistered("myRule");
+    expect(result).toBe(true);
+  });
+
+  test("should be able use custom rule", async () => {
+    const data = {
+      email: "[email protected]",
+    };
+    const rules = {
+      email: "myRule",
+    };
+
+    const result = await validate(data, rules);
+    expect(result.isValid).toBe(false);
+    expect(result.errors.email[0].rule).toBe("myRule");
+    expect(result.errors.email[0].message).toBe("My rule throws an error!");
+  });
+});