test: add integration test for basic validation

package.json

@@ -16,6 +16,7 @@
     "test:vp": "jest -i vp.test.ts",
     "test:delegation": "jest -i delegation.test.ts",
     "test:validation": "jest -i validation.test.ts",
+    "test:integration": "jest -i test/integration/",
     "test:unit": "jest -i test/unit/",
     "prepublishOnly": "npm run build",
     "postinstall": "npm run build",

src/validations/validation.ts

@@ -31,6 +31,7 @@ export default class Validation {
     this.params = params;
   }
 
+  // TODO: validate invalid networks
   async validate(customAuthor = this.author): Promise<boolean> {
     try {
       this.validateAddressType(customAuthor);