Add test to default validation

Author: CodingCarlos

spec/modifiers/default.spec.js

@@ -0,0 +1,24 @@
+var valid = require('../../lib/modifiers/default');
+
+const model = {
+	default: 'default value'
+};
+
+describe(' - Default modifier', () => {
+	it('shall be a function', () => {
+		expect(typeof valid).toEqual('function');
+	});
+
+	it('shall not modify data when no model set', () => {
+		expect(valid('validData', {})).toEqual(null);
+		expect(valid(undefined, {})).toEqual(null);
+	});
+
+	it('shall not modify data if exists and model set', () => {
+		expect(valid('validData', model)).toEqual(null);
+	});
+
+	it('shall return the default value when not data and model set', () => {
+		expect(valid(undefined, model)).toEqual(model.default);
+	});
+});