adding tests.
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c7e5443982
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3 changed files with 79 additions and 2 deletions
53
moving_average_series_test.go
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53
moving_average_series_test.go
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@ -0,0 +1,53 @@
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package chart
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import (
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"testing"
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"github.com/blendlabs/go-assert"
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)
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type mockValueProvider struct {
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X []float64
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Y []float64
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}
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func (m mockValueProvider) Len() int {
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return MinInt(len(m.X), len(m.Y))
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}
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func (m mockValueProvider) GetValue(index int) (x, y float64) {
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x = m.X[index]
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y = m.Y[index]
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return
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}
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func TestMovingAverageSeriesGetValue(t *testing.T) {
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assert := assert.New(t)
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mockSeries := mockValueProvider{
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Seq(1.0, 10.0),
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Seq(10, 1.0),
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}
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assert.Equal(10, mockSeries.Len())
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mas := &MovingAverageSeries{
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InnerSeries: mockSeries,
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WindowSize: 10,
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}
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var yvalues []float64
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for x := 0; x < mas.Len(); x++ {
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_, y := mas.GetValue(x)
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yvalues = append(yvalues, y)
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}
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assert.Equal(10.0, yvalues[0])
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assert.Equal(9.5, yvalues[1])
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assert.Equal(9.0, yvalues[2])
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assert.Equal(8.5, yvalues[3])
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assert.Equal(8.0, yvalues[4])
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assert.Equal(7.5, yvalues[5])
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assert.Equal(7.0, yvalues[6])
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assert.Equal(6.5, yvalues[7])
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assert.Equal(6.0, yvalues[8])
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}
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11
util.go
11
util.go
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@ -130,8 +130,15 @@ func Seq(start, end float64, steps ...float64) []float64 {
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if len(steps) > 0 {
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step = steps[0]
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}
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for x := start; x <= end; x += step {
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values = append(values, x)
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if start < end {
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for x := start; x <= end; x += step {
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values = append(values, x)
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}
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} else {
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for x := start; x >= end; x = x - step {
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values = append(values, x)
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}
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}
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return values
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}
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17
util_test.go
17
util_test.go
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@ -83,3 +83,20 @@ func TestGetRoundToForDelta(t *testing.T) {
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assert.Equal(10.0, GetRoundToForDelta(101.00))
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assert.Equal(1.0, GetRoundToForDelta(11.00))
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}
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func TestSeq(t *testing.T) {
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assert := assert.New(t)
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asc := Seq(1.0, 10.0)
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assert.Len(asc, 10)
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desc := Seq(10.0, 1.0)
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assert.Len(desc, 10)
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}
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func TestPercentDifference(t *testing.T) {
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assert := assert.New(t)
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assert.Equal(0.5, PercentDifference(1.0, 1.5))
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assert.Equal(-0.5, PercentDifference(2.0, 1.0))
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}
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