fix(rules): Validate NumberVal before

Author: ricardogobbosouza

src/rules/multiple.ts

@@ -1,4 +1,5 @@
 import { AbstractRule } from './abstract-rule';
+import { NumberVal } from './number-val';
 
 export class Multiple extends AbstractRule {
 
@@ -13,6 +14,10 @@ export class Multiple extends AbstractRule {
      * Validate.
      */
     public validate(input: any): boolean {
+        if (!new NumberVal().validate(input)) {
+            return false;
+        }
+
         if (this.multipleOf === 0) {
             return this.multipleOf === input;
         }

src/rules/negative.ts

@@ -1,11 +1,16 @@
 import { AbstractRule } from './abstract-rule';
+import { NumberVal } from './number-val';
 
 export class Negative extends AbstractRule {
 
     /**
      * Validate.
      */
     public validate(input: any): boolean {
+        if (!new NumberVal().validate(input)) {
+            return false;
+        }
+
         return input < 0;
     }
 }

src/rules/positive.ts

@@ -1,11 +1,16 @@
 import { AbstractRule } from './abstract-rule';
+import { NumberVal } from './number-val';
 
 export class Positive extends AbstractRule {
 
     /**
      * Validate.
      */
     public validate(input: any): boolean {
+        if (!new NumberVal().validate(input)) {
+            return false;
+        }
+
         return input > 0;
     }
 }