.

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

@@ -0,0 +1,43 @@
+chai = require "chai"
+chai.use(require "chai-increasing")
+{assert,expect} = chai
+Bluebird = require "bluebird"
+
+now = require "../"
+
+getUptime = -> process.uptime() * 1e3
+
+describe "now", ->
+  it "reported time differs at most 1ms from a freshly reported uptime", ->
+    assert.isAtMost Math.abs(now()-getUptime()), 1
+
+  it "two subsequent calls return an increasing number", ->
+    assert.isBelow now(), now()
+
+  it "has less than 10 microseconds overhead", ->
+    assert.isBelow Math.abs(now() - now()), 0.010
+
+  it "can be called 1 million times in under 1 second (averaging under 1 microsecond per call)", ->
+    @timeout 1000
+    now() for [0...1e6]
+    undefined
+
+  it "for 10,000 numbers, number n is never bigger than number n-1", ->
+    stamps = (now() for [1...10000])
+    expect(stamps).to.be.increasing
+
+  it "shows that at least 0.2 ms has passed after a timeout of 1 ms", ->
+    earlier = now()
+    Bluebird.resolve().delay(1).then -> assert.isAbove (now()-earlier), 0.2
+
+  it "shows that at most 3 ms has passed after a timeout of 1 ms", ->
+    earlier = now()
+    Bluebird.resolve().delay(1).then -> assert.isBelow (now()-earlier), 3
+
+  it "shows that at least 190ms ms has passed after a timeout of 200ms", ->
+    earlier = now()
+    Bluebird.resolve().delay(200).then -> assert.isAbove (now()-earlier), 190
+
+  it "shows that at most 220 ms has passed after a timeout of 200ms", ->
+    earlier = now()
+    Bluebird.resolve().delay(200).then -> assert.isBelow (now()-earlier), 220