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-rw-r--r--spec/util_promise_spec.lua49
1 files changed, 49 insertions, 0 deletions
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");