| 1 | chai = require "chai"
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| 2 | chai.use(require "chai-increasing")
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| 3 | {assert,expect} = chai
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| 4 | Bluebird = require "bluebird"
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| 5 |
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| 6 | now = require "../"
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| 7 |
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| 8 | getUptime = -> process.uptime() * 1e3
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| 9 |
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| 10 | describe "now", ->
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| 11 | it "reported time differs at most 1ms from a freshly reported uptime", ->
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| 12 | assert.isAtMost Math.abs(now()-getUptime()), 1
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| 13 |
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| 14 | it "two subsequent calls return an increasing number", ->
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| 15 | assert.isBelow now(), now()
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| 16 |
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| 17 | it "has less than 10 microseconds overhead", ->
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| 18 | assert.isBelow Math.abs(now() - now()), 0.010
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| 19 |
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| 20 | it "can be called 1 million times in under 1 second (averaging under 1 microsecond per call)", ->
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| 21 | @timeout 1000
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| 22 | now() for [0...1e6]
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| 23 | undefined
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| 24 |
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| 25 | it "for 10,000 numbers, number n is never bigger than number n-1", ->
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| 26 | stamps = (now() for [1...10000])
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| 27 | expect(stamps).to.be.increasing
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| 28 |
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| 29 | it "shows that at least 0.2 ms has passed after a timeout of 1 ms", ->
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| 30 | earlier = now()
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| 31 | Bluebird.resolve().delay(1).then -> assert.isAbove (now()-earlier), 0.2
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| 32 |
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| 33 | it "shows that at most 3 ms has passed after a timeout of 1 ms", ->
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| 34 | earlier = now()
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| 35 | Bluebird.resolve().delay(1).then -> assert.isBelow (now()-earlier), 3
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| 36 |
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| 37 | it "shows that at least 190ms ms has passed after a timeout of 200ms", ->
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| 38 | earlier = now()
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| 39 | Bluebird.resolve().delay(200).then -> assert.isAbove (now()-earlier), 190
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| 40 |
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| 41 | it "shows that at most 220 ms has passed after a timeout of 200ms", ->
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| 42 | earlier = now()
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| 43 | Bluebird.resolve().delay(200).then -> assert.isBelow (now()-earlier), 220
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