From 843104372c0ec065a89d09f25079f68b98314c31 Mon Sep 17 00:00:00 2001 From: Matthew Wild Date: Mon, 30 Sep 2019 08:22:30 +0100 Subject: util.promise: Add some additional tests to cover callback return values --- spec/util_promise_spec.lua | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'spec/util_promise_spec.lua') diff --git a/spec/util_promise_spec.lua b/spec/util_promise_spec.lua index 65d252f6..0008c6a2 100644 --- a/spec/util_promise_spec.lua +++ b/spec/util_promise_spec.lua @@ -248,6 +248,30 @@ describe("util.promise", function () assert.spy(cb3).was_called(1); assert.spy(cb3).was_called_with("goodbye"); end); + + it("ordinary values", function () + local p = promise.resolve() + local cb = spy.new(function () + return "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("nil", function () + local p = promise.resolve() + local cb = spy.new(function () + return + 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(nil); + end); end); describe("race()", function () -- cgit v1.2.3 From 9e0186b0ed9b0005807b5d383faf8626fdf36168 Mon Sep 17 00:00:00 2001 From: Matthew Wild Date: Mon, 8 Jun 2020 14:01:02 +0100 Subject: util.promise: Add all_settled, which follows semantics of allSettled from ES2020 --- spec/util_promise_spec.lua | 54 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) (limited to 'spec/util_promise_spec.lua') diff --git a/spec/util_promise_spec.lua b/spec/util_promise_spec.lua index 0008c6a2..6fb5d6bd 100644 --- a/spec/util_promise_spec.lua +++ b/spec/util_promise_spec.lua @@ -353,6 +353,60 @@ describe("util.promise", function () assert.equal("fail", result); end); end); + describe("all_settled()", function () + it("works with fulfilled promises", function () + local p1, p2 = promise.resolve("yep"), promise.resolve("nope"); + local p = promise.all_settled({ p1, p2 }); + local result; + p:next(function (v) + result = v; + end); + assert.same({ + { status = "fulfilled", value = "yep" }; + { status = "fulfilled", value = "nope" }; + }, result); + end); + it("works with pending promises", function () + local r1, r2; + local p1, p2 = promise.new(function (resolve) r1 = resolve end), promise.new(function (resolve) r2 = resolve end); + local p = promise.all_settled({ p1, p2 }); + + local result; + local cb = spy.new(function (v) + result = v; + end); + p:next(cb); + assert.spy(cb).was_called(0); + r2("yep"); + assert.spy(cb).was_called(0); + r1("nope"); + assert.spy(cb).was_called(1); + assert.same({ + { status = "fulfilled", value = "nope" }; + { status = "fulfilled", value = "yep" }; + }, result); + end); + it("works when some promises reject", function () + local r1, r2; + local p1, p2 = promise.new(function (resolve) r1 = resolve end), promise.new(function (_, reject) r2 = reject end); + local p = promise.all_settled({ p1, p2 }); + + local result; + local cb = spy.new(function (v) + result = v; + end); + p:next(cb); + assert.spy(cb).was_called(0); + r2("this fails"); + assert.spy(cb).was_called(0); + r1("this succeeds"); + assert.spy(cb).was_called(1); + assert.same({ + { status = "fulfilled", value = "this succeeds" }; + { status = "rejected", reason = "this fails" }; + }, result); + end); + end); describe("catch()", function () it("works", function () local result; -- cgit v1.2.3