38 lines
1.1 KiB
CoffeeScript
38 lines
1.1 KiB
CoffeeScript
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assert = require "assert"
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delay = (ms, fn) -> setTimeout fn, ms
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now = undefined
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describe "now", ->
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it "initially gives a near zero (< 20 ms) time ", ->
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now = require "../"
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assert now() < 20
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it "gives a positive time", ->
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assert now() > 0
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it "two subsequent calls return an increasing number", ->
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a = now()
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b = now()
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assert now() < now()
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it "has less than 10 microseconds overhead", ->
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Math.abs(now() - now()) < 0.010
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it "can do 1,000,000 calls really quickly", ->
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now() for i in [0...1000000]
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it "shows that at least 990 ms has passed after a timeout of 1 second", (done) ->
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a = now()
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delay 1000, ->
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b = now()
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diff = b - a
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return done new Error "Diff (#{diff}) lower than 990." if diff < 990
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return done null
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it "shows that not more than 1020 ms has passed after a timeout of 1 second", (done) ->
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a = now()
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delay 1000, ->
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b = now()
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diff = b - a
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return done new Error "Diff (#{diff}) higher than 1020." if diff > 1020
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return done null
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