[Botskills] Implement logger tests (#1915)

* Add logger tests

* Remove unused var

Author: Batta32

tools/botskills/test/logger.test.js

@@ -0,0 +1,60 @@
+/**
+ * Copyright(c) Microsoft Corporation.All rights reserved.
+ * Licensed under the MIT License.
+ */
+
+const { ok } = require("assert");
+const { ConsoleLogger } = require("../lib/logger");
+const sandbox = require("sinon").createSandbox();
+const logger = new ConsoleLogger();
+const message = "Custom Message";
+const command = "Custom Command";
+
+describe("The logger", function () {
+    beforeEach(function () {
+        this.stubError = sandbox.spy(console, 'error');
+        this.stubMessage = sandbox.spy(console, 'log');
+    });
+
+    afterEach(function() {
+        this.stubError.restore();
+        this.stubMessage.restore();
+    });
+
+    describe("should print", function(){
+        it("the custom error message", function() {
+            logger.error(message);
+            ok(this.stubError.called);
+            ok(logger.isError);
+        });
+
+        it("the custom informative message", function() {
+            logger.message(message);
+            ok(this.stubMessage.called);
+        });
+
+        it("the custom success message", function() {
+            logger.success(message);
+            ok(this.stubMessage.called);
+        });
+
+        it("the custom warning message", function() {
+            logger.warning(message);
+            ok(this.stubMessage.called);
+        });
+
+        describe("the custom command message without verbose flag", function() {
+            it("without verbose flag", function() {
+                logger.isVerbose = undefined;
+                logger.command(message, command);
+                ok(this.stubMessage.called);
+            });
+
+            it("with verbose flag", function() {
+                logger.isVerbose = true;
+                logger.command(message, command);
+                ok(this.stubMessage.called);
+            });
+        });
+    });
+});