Send floating point milliseconds in time block

To match what the available back-ends support.

lib/statsd.rb

@@ -89,7 +89,7 @@ def timing(stat, ms, sample_rate=1); send stat, ms, 'ms', sample_rate end
  def time(stat, sample_rate=1)
  start = Time.now
  result = yield
- timing(stat, ((Time.now - start) * 1000).round, sample_rate)
+ timing(stat, (Time.now - start) * 1000, sample_rate)
  result
  end
 

spec/statsd_spec.rb

@@ -71,7 +71,11 @@ def socket; @socket ||= FakeUDPSocket.new end
  describe "#time" do
  it "should format the message according to the statsd spec" do
  @statsd.time('foobar') { sleep(0.001); 'test' }
- @statsd.socket.recv.must_equal ['foobar:1|ms']
+ data = @statsd.socket.recv
+ key, value, unit = data.first.split(/[:|]/)
+ key.must_equal "foobar"
+ value.must_match /^\d\.\d{3}$/
+ unit.must_equal "ms"
  end
 
  it "should return the result of the block" do
@@ -84,7 +88,12 @@ def socket; @socket ||= FakeUDPSocket.new end
 
  it "should format the message according to the statsd spec" do
  result = @statsd.time('foobar', 0.5) { sleep(0.001); 'test' }
- @statsd.socket.recv.must_equal ['foobar:1|ms|@0.5']
+ data = @statsd.socket.recv
+ key, value, unit, frequency = data.first.split(/[:|]/)
+ key.must_equal "foobar"
+ value.must_match /^\d\.\d{3}$/
+ unit.must_equal "ms"
+ frequency.must_equal "@0.5"
  end
  end
  end