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-rw-r--r--spec/util_promise_spec.lua26
1 files changed, 26 insertions, 0 deletions
diff --git a/spec/util_promise_spec.lua b/spec/util_promise_spec.lua
index 4be9b5a0..79eec5e2 100644
--- a/spec/util_promise_spec.lua
+++ b/spec/util_promise_spec.lua
@@ -459,6 +459,32 @@ describe("util.promise", function ()
assert.same({ foo = true }, result);
end);
end);
+ describe("join()", function ()
+ it("works", function ()
+ local r1, r2;
+ local res1, res2;
+ local p1, p2 = promise.new(function (resolve) r1 = resolve end), promise.new(function (resolve) r2 = resolve end);
+
+ local p = promise.join(p1, p2, function (_res1, _res2)
+ res1, res2 = _res1, _res2;
+ return promise.resolve("works");
+ end);
+
+ 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("works", result);
+ assert.equals("nope", res1);
+ assert.equals("yep", res2);
+ end);
+ end);
it("promises may be resolved by other promises", function ()
local r1, r2;
local p1, p2 = promise.new(function (resolve) r1 = resolve end), promise.new(function (resolve) r2 = resolve end);