added unit testing, and started implementing unit tests...phew

node_modules/@sinonjs/commons/lib/deprecated.test.js

@@ -0,0 +1,86 @@
+/* eslint-disable no-console */
+"use strict";
+
+var assert = require("@sinonjs/referee-sinon").assert;
+var sinon = require("@sinonjs/referee-sinon").sinon;
+
+var deprecated = require("./deprecated");
+
+var msg = "test";
+
+describe("deprecated", function() {
+    describe("defaultMsg", function() {
+        it("should return a string", function() {
+            assert.equals(
+                deprecated.defaultMsg("sinon", "someFunc"),
+                "sinon.someFunc is deprecated and will be removed from the public API in a future version of sinon."
+            );
+        });
+    });
+
+    describe("printWarning", function() {
+        describe("when `console` is defined", function() {
+            beforeEach(function() {
+                sinon.replace(console, "info", sinon.fake());
+                sinon.replace(console, "log", sinon.fake());
+            });
+
+            afterEach(sinon.restore);
+
+            describe("when `console.info` is defined", function() {
+                it("shoudl call `console.info` with a message", function() {
+                    deprecated.printWarning(msg);
+                    assert.calledOnceWith(console.info, msg);
+                });
+            });
+
+            describe("when `console.info` is undefined", function() {
+                it("should call `console.log` with a message", function() {
+                    console.info = undefined;
+                    deprecated.printWarning(msg);
+                    assert.calledOnceWith(console.log, msg);
+                });
+            });
+        });
+    });
+
+    describe("wrap", function() {
+        var method = sinon.fake();
+        var wrapped;
+
+        beforeEach(function() {
+            wrapped = deprecated.wrap(method, msg);
+        });
+
+        it("should return a wrapper function", function() {
+            assert.match(wrapped, sinon.match.func);
+        });
+
+        it("should assign the prototype of the passed method", function() {
+            assert.equals(method.prototype, wrapped.prototype);
+        });
+
+        context("when the passed method has falsy prototype", function() {
+            it("should not be assigned to the wrapped method", function() {
+                method.prototype = null;
+                wrapped = deprecated.wrap(method, msg);
+                assert.match(wrapped.prototype, sinon.match.object);
+            });
+        });
+
+        context("when invoking the wrapped function", function() {
+            before(function() {
+                sinon.replace(deprecated, "printWarning", sinon.fake());
+                wrapped({});
+            });
+
+            it("should call `printWarning` before invoking", function() {
+                assert.calledOnceWith(deprecated.printWarning, msg);
+            });
+
+            it("should invoke the passed method with the given arguments", function() {
+                assert.calledOnceWith(method, {});
+            });
+        });
+    });
+});