initial

node_modules/performance-now/test/mocha.opts

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+--require coffee-script/register
+--compilers coffee:coffee-script/register
+--reporter spec

node_modules/performance-now/test/performance-now.coffee

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