Software /
code /
prosody
Diff
spec/util_promise_spec.lua @ 9514:9db707a86a25
util.promise: Add promise:finally()
author | Matthew Wild <mwild1@gmail.com> |
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date | Thu, 18 Oct 2018 12:13:17 +0100 (2018-10-18) |
parent | 9511:cb88d729e98d |
child | 9517:b1c6ede17592 |
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--- a/spec/util_promise_spec.lua Thu Oct 18 12:12:52 2018 +0100 +++ b/spec/util_promise_spec.lua Thu Oct 18 12:13:17 2018 +0100 @@ -264,4 +264,71 @@ assert.spy(cb).was_called(0); end); end); + describe("finally()", function () + local p, p2, resolve, reject, on_finally; + before_each(function () + p = promise.new(function (_resolve, _reject) + resolve, reject = _resolve, _reject; + end); + on_finally = spy.new(function () end); + p2 = p:finally(on_finally); + end); + it("runs when a promise is resolved", function () + assert.spy(on_finally).was_called(0); + resolve("foo"); + assert.spy(on_finally).was_called(1); + assert.spy(on_finally).was_not_called_with("foo"); + end); + it("runs when a promise is rejected", function () + assert.spy(on_finally).was_called(0); + reject("foo"); + assert.spy(on_finally).was_called(1); + assert.spy(on_finally).was_not_called_with("foo"); + end); + it("returns a promise that fulfills with the original value", function () + local cb2 = spy.new(function () end); + p2:next(cb2); + assert.spy(on_finally).was_called(0); + assert.spy(cb2).was_called(0); + resolve("foo"); + assert.spy(on_finally).was_called(1); + assert.spy(cb2).was_called(1); + assert.spy(on_finally).was_not_called_with("foo"); + assert.spy(cb2).was_called_with("foo"); + end); + it("returns a promise that rejects with the original error", function () + local on_finally_err = spy.new(function () end); + local on_finally_ok = spy.new(function () end); + p2:catch(on_finally_err); + p2:next(on_finally_ok); + assert.spy(on_finally).was_called(0); + assert.spy(on_finally_err).was_called(0); + reject("foo"); + assert.spy(on_finally).was_called(1); + -- Since the original promise was rejected, the finally promise should also be + assert.spy(on_finally_ok).was_called(0); + assert.spy(on_finally_err).was_called(1); + assert.spy(on_finally).was_not_called_with("foo"); + assert.spy(on_finally_err).was_called_with("foo"); + end); + it("returns a promise that rejects with an uncaught error inside on_finally", function () + p = promise.new(function (_resolve, _reject) + resolve, reject = _resolve, _reject; + end); + local test_error = {}; + on_finally = spy.new(function () error(test_error) end); + p2 = p:finally(on_finally); + + local on_finally_err = spy.new(function () end); + p2:catch(on_finally_err); + assert.spy(on_finally).was_called(0); + assert.spy(on_finally_err).was_called(0); + reject("foo"); + assert.spy(on_finally).was_called(1); + assert.spy(on_finally_err).was_called(1); + assert.spy(on_finally).was_not_called_with("foo"); + assert.spy(on_finally).was_not_called_with(test_error); + assert.spy(on_finally_err).was_called_with(test_error); + end); + end); end);