Add unit tests for validation helpers

Author: micaswyers-work

test/helpers/validation-helpers.test.js

@@ -0,0 +1,33 @@
+const chai = require('chai');
+const sinon = require('sinon');
+const Twilio = require('twilio');
+
+const validateSid = require('../../src/helpers/validation-helpers.js').validateSid;
+
+describe('validateSid', () => {
+  context(
+    'when a chat service SID is valid',
+    () => {
+      it('returns true', () => {
+        const result = validateSid('IS', 'IS12345678901234567890123456789012');
+        chai.expect(result).to.be.true;
+      });
+    },
+  );
+
+  context(
+    'when a service SID is invalid', () => {
+      context('does not start with the correct prefix', () => {
+        it('returns false', () => {
+        const result = validateSid('IS', 'ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX');
+        chai.expect(result).to.be.false;
+      });
+    })
+      context('is not 34 characters long', () => {
+        it('returns false', () => {
+        const result = validateSid('IS', 'IS1234567890');
+        chai.expect(result).to.be.false;
+      });
+    })
+ });
+});