Increase code coverage in botbuilder library - StatusCodeError class (#…

…2494)

* Add statusCodeError unit tests

* Encapsulate tests in constructor()

Co-authored-by: Joel Mut <[email protected]>
Co-authored-by: Cecilia Avila <[email protected]>

libraries/botbuilder/tests/statusCodeError.test.js

@@ -0,0 +1,48 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License.
+ */
+
+const assert = require('assert');
+const { StatusCodeError } = require('../');
+const { StatusCodes } = require('botbuilder-core');
+
+describe(`StatusCodeError`, function() {
+    describe('constructor()', () => {
+        it(`should work with a message.`, done => {
+            try {
+                const message = 'This is an error message';
+                const error = new StatusCodeError(StatusCodes.NOT_FOUND, message);
+
+                assert.strictEqual(error.message, message, `message should be equal to "${message}".`)
+                assert.strictEqual(error.statusCode, StatusCodes.NOT_FOUND, `statusCode should be the code ${StatusCodes.NOT_FOUND}`)
+                done();
+            } catch (error) {
+                done(error);
+            }
+        });
+
+        it(`should work without a message.`, done => {
+            try {
+                const error = new StatusCodeError(StatusCodes.NOT_FOUND);
+
+                assert.strictEqual(error.message, '', 'message should be empty.')
+                assert.strictEqual(error.statusCode, StatusCodes.NOT_FOUND, `statusCode should be the code ${StatusCodes.NOT_FOUND}`)
+                done();
+            } catch (error) {
+                done(error);
+            }
+        });
+
+        it(`should statusCode be undefined if not passed as a parameter.`, done => {
+            try {
+                const error = new StatusCodeError();
+
+                assert.strictEqual(error.statusCode, undefined, 'statusCode should be undefined.')
+                done();
+            } catch (error) {
+                done(error);
+            }
+        });
+    });
+});