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70 lines
2.1 KiB
Lua
70 lines
2.1 KiB
Lua
local unload = require "deftest.util.unload"
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local cowat = require "test.cowait"
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local callback_tracker = require "monarch.utils.callback_tracker"
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return function()
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describe("callback tracker", function()
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before(function()
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callback_tracker = require "monarch.utils.callback_tracker"
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end)
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after(function()
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unload.unload("monarch%..*")
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end)
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it("should be able to tell when all callbacks are done", function()
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local tracker = callback_tracker.create()
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local t1 = tracker.track()
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local t2 = tracker.track()
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local done = false
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tracker.when_done(function() done = true end)
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assert(not done, "It should not be done yet - No callback has completed")
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t1()
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assert(not done, "It should not be done yet - Only one callback has completed")
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t2()
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assert(done, "It should be done now - All callbacks have completed")
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end)
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it("should indicate if a tracked callback has been invoked more than once", function()
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local tracker = callback_tracker.create()
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local t = tracker.track()
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local ok, err = t()
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assert(ok == true and err == nil, "It should return true when successful")
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ok, err = t()
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assert(ok == false and err, "It should return false and a message when invoked multiple times")
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end)
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it("should not be possible to track the same callback more than one time", function()
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local tracker = callback_tracker.create()
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local t1 = tracker.track()
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local t2 = tracker.track()
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local done = false
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tracker.when_done(function() done = true end)
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assert(not done, "It should not be done yet - No callback has completed")
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t1()
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t1()
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assert(not done, "It should not be done yet - Even if one callback has been invoked twice")
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t2()
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assert(done, "It should be done now - All callbacks have completed")
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end)
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it("should handle when callbacks are done before calling when_done()", function()
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local tracker = callback_tracker.create()
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local t1 = tracker.track()
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local t2 = tracker.track()
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t1()
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t2()
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local done = false
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tracker.when_done(function() done = true end)
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assert(done, "It should be done now - All callbacks have completed")
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end)
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end)
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end
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