85 lines
2.1 KiB
Go
85 lines
2.1 KiB
Go
|
// Copyright (c) 2012, Matt T. Proud
|
||
|
// All rights reserved.
|
||
|
//
|
||
|
// Use of this source code is governed by a BSD-style
|
||
|
// license that can be found in the LICENSE file.
|
||
|
|
||
|
// tallying_bucket_test.go provides a test complement for the
|
||
|
// tallying_bucket.go module.
|
||
|
|
||
|
package metrics
|
||
|
|
||
|
import (
|
||
|
"github.com/matttproud/golang_instrumentation/maths"
|
||
|
. "launchpad.net/gocheck"
|
||
|
)
|
||
|
|
||
|
func (s *S) TestTallyingPercentileEstimatorMinimum(c *C) {
|
||
|
c.Assert(Minimum(-2, -1, 0, 0), maths.IsNaN)
|
||
|
c.Check(Minimum(-2, -1, 0, 1), Equals, -2.0)
|
||
|
}
|
||
|
|
||
|
func (s *S) TestTallyingPercentileEstimatorMaximum(c *C) {
|
||
|
c.Assert(Maximum(-2, -1, 0, 0), maths.IsNaN)
|
||
|
c.Check(Maximum(-2, -1, 0, 1), Equals, -1.0)
|
||
|
}
|
||
|
|
||
|
func (s *S) TestTallyingPercentilesEstimatorAverage(c *C) {
|
||
|
c.Assert(Average(-2, -1, 0, 0), maths.IsNaN)
|
||
|
c.Check(Average(-2, -2, 0, 1), Equals, -2.0)
|
||
|
c.Check(Average(-1, -1, 0, 1), Equals, -1.0)
|
||
|
c.Check(Average(1, 1, 0, 2), Equals, 1.0)
|
||
|
c.Check(Average(2, 1, 0, 2), Equals, 1.5)
|
||
|
}
|
||
|
|
||
|
func (s *S) TestTallyingPercentilesEstimatorUniform(c *C) {
|
||
|
c.Assert(Uniform(-5, 5, 0, 0), maths.IsNaN)
|
||
|
|
||
|
// TODO(mtp): Rewrite.
|
||
|
// for i := 0.0; i < 33.3; i += 0.1 {
|
||
|
// c.Check(Uniform(-5, 5, i, 2), Equals, -5.0)
|
||
|
// }
|
||
|
|
||
|
// for i := 33.4; i < 66.0; i += 0.1 {
|
||
|
// c.Check(Uniform(-5, 5, i, 2), Equals, 0.0)
|
||
|
// }
|
||
|
|
||
|
// for i := 66.7; i < 100.0; i += 0.1 {
|
||
|
// c.Check(Uniform(-5, 5, i, 2), Equals, 5.0)
|
||
|
// }
|
||
|
}
|
||
|
|
||
|
func (s *S) TestTallyingBucketBuilder(c *C) {
|
||
|
var bucket Bucket = TallyingBucketBuilder()
|
||
|
|
||
|
c.Assert(bucket, Not(IsNil))
|
||
|
}
|
||
|
|
||
|
func (s *S) TestTallyingBucketHumanize(c *C) {
|
||
|
bucket := TallyingBucket{
|
||
|
observations: 3,
|
||
|
smallestObserved: 2.0,
|
||
|
largestObserved: 5.5,
|
||
|
}
|
||
|
|
||
|
c.Check(bucket.Humanize(), Equals, "[TallyingBucket (2.000000, 5.500000); 3 items]")
|
||
|
}
|
||
|
|
||
|
func (s *S) TestTallyingBucketAdd(c *C) {
|
||
|
b := DefaultTallyingBucket()
|
||
|
|
||
|
b.Add(1)
|
||
|
|
||
|
c.Check(b.observations, Equals, 1)
|
||
|
c.Check(b.Observations(), Equals, 1)
|
||
|
c.Check(b.smallestObserved, Equals, 1.0)
|
||
|
c.Check(b.largestObserved, Equals, 1.0)
|
||
|
|
||
|
b.Add(2)
|
||
|
|
||
|
c.Check(b.observations, Equals, 2)
|
||
|
c.Check(b.Observations(), Equals, 2)
|
||
|
c.Check(b.smallestObserved, Equals, 1.0)
|
||
|
c.Check(b.largestObserved, Equals, 2.0)
|
||
|
}
|