From eb378bd2bcf69ffc013c5294b6ab95caea1a92ef Mon Sep 17 00:00:00 2001 From: Matthew Wild Date: Fri, 26 Oct 2018 09:23:00 +0100 Subject: util.promise: Add tests ensuring returning a promise resolves the current promise with that promise --- spec/util_promise_spec.lua | 49 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) (limited to 'spec/util_promise_spec.lua') diff --git a/spec/util_promise_spec.lua b/spec/util_promise_spec.lua index 586f1fe9..65d252f6 100644 --- a/spec/util_promise_spec.lua +++ b/spec/util_promise_spec.lua @@ -201,6 +201,55 @@ describe("util.promise", function () assert.spy(cb2_err).was_called_with("foo"); end); + describe("allows callbacks to return", function () + it("pending promises", function () + local r; + local p = promise.resolve() + local cb = spy.new(function () + return promise.new(function (resolve) + r = resolve; + end); + end); + local cb2 = spy.new(function () end); + p:next(cb):next(cb2); + assert.spy(cb).was_called(1); + assert.spy(cb2).was_called(0); + r("hello"); + assert.spy(cb).was_called(1); + assert.spy(cb2).was_called(1); + assert.spy(cb2).was_called_with("hello"); + end); + + it("resolved promises", function () + local p = promise.resolve() + local cb = spy.new(function () + return promise.resolve("hello"); + end); + local cb2 = spy.new(function () end); + p:next(cb):next(cb2); + assert.spy(cb).was_called(1); + assert.spy(cb2).was_called(1); + assert.spy(cb2).was_called_with("hello"); + end); + + it("rejected promises", function () + local p = promise.resolve() + local cb = spy.new(function () + return promise.reject("hello"); + end); + local cb2 = spy.new(function () + return promise.reject("goodbye"); + end); + local cb3 = spy.new(function () end); + p:next(cb):catch(cb2):catch(cb3); + assert.spy(cb).was_called(1); + assert.spy(cb2).was_called(1); + assert.spy(cb2).was_called_with("hello"); + assert.spy(cb3).was_called(1); + assert.spy(cb3).was_called_with("goodbye"); + end); + end); + describe("race()", function () it("works with fulfilled promises", function () local p1, p2 = promise.resolve("yep"), promise.resolve("nope"); -- cgit v1.2.3