test: Add test for Rule class.

* This adds two tests for the Rules class testing the error conditions for when a rule does not have an id parameter or a validate function.

Author: lholmquist

test/rule-test.js

@@ -0,0 +1,32 @@
+'use strict'
+
+const test = require('tap').test
+const BaseRule = require('../lib/rule')
+
+test('Base Rule Test', (t) => {
+  t.test('No id param', (tt) => {
+    try {
+      new BaseRule()
+      tt.fail('This should fail')
+    } catch (err) {
+      tt.equal(err.message,
+               'Rule must have an id',
+               'Should have error message about id')
+      tt.end()
+    }
+  })
+
+  t.test('No validate function', (tt) => {
+    try {
+      new BaseRule({id: 'test-rule'})
+      tt.fail('This should fail')
+    } catch (err) {
+      tt.equal(err.message,
+               'Rule must have validate function',
+               'Should have error message about validate function')
+      tt.end()
+    }
+  })
+
+  t.end()
+})