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Viewing file:     deprecated.test.js (3.34 KB)      -rw-r--r--

/* 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() {
        beforeEach(function() {
            sinon.replace(process, "emitWarning", sinon.fake());
        });

        afterEach(sinon.restore);

        describe("when `process.emitWarning` is defined", function() {
            it("should call process.emitWarning with a msg", function() {
                deprecated.printWarning(msg);
                assert.calledOnceWith(process.emitWarning, msg);
            });
        });

        describe("when `process.emitWarning` is undefined", function() {
            beforeEach(function() {
                sinon.replace(console, "info", sinon.fake());
                sinon.replace(console, "log", sinon.fake());
                process.emitWarning = undefined;
            });

            afterEach(sinon.restore);

            describe("when `console.info` is defined", function() {
                it("should 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, {});
            });
        });
    });
});