79 lines
1.7 KiB
Go
79 lines
1.7 KiB
Go
package chart
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import (
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"testing"
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assert "github.com/blend/go-sdk/assert"
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"github.com/wcharczuk/go-chart/seq"
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)
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func TestLinearRegressionSeries(t *testing.T) {
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assert := assert.New(t)
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mainSeries := ContinuousSeries{
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Name: "A test series",
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XValues: seq.Range(1.0, 100.0),
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YValues: seq.Range(1.0, 100.0),
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}
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linRegSeries := &LinearRegressionSeries{
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InnerSeries: mainSeries,
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}
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lrx0, lry0 := linRegSeries.GetValues(0)
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assert.InDelta(1.0, lrx0, 0.0000001)
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assert.InDelta(1.0, lry0, 0.0000001)
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lrxn, lryn := linRegSeries.GetLastValues()
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assert.InDelta(100.0, lrxn, 0.0000001)
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assert.InDelta(100.0, lryn, 0.0000001)
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}
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func TestLinearRegressionSeriesDesc(t *testing.T) {
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assert := assert.New(t)
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mainSeries := ContinuousSeries{
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Name: "A test series",
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XValues: seq.Range(100.0, 1.0),
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YValues: seq.Range(100.0, 1.0),
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}
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linRegSeries := &LinearRegressionSeries{
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InnerSeries: mainSeries,
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}
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lrx0, lry0 := linRegSeries.GetValues(0)
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assert.InDelta(100.0, lrx0, 0.0000001)
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assert.InDelta(100.0, lry0, 0.0000001)
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lrxn, lryn := linRegSeries.GetLastValues()
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assert.InDelta(1.0, lrxn, 0.0000001)
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assert.InDelta(1.0, lryn, 0.0000001)
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}
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func TestLinearRegressionSeriesWindowAndOffset(t *testing.T) {
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assert := assert.New(t)
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mainSeries := ContinuousSeries{
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Name: "A test series",
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XValues: seq.Range(100.0, 1.0),
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YValues: seq.Range(100.0, 1.0),
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}
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linRegSeries := &LinearRegressionSeries{
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InnerSeries: mainSeries,
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Offset: 10,
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Limit: 10,
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}
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assert.Equal(10, linRegSeries.Len())
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lrx0, lry0 := linRegSeries.GetValues(0)
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assert.InDelta(90.0, lrx0, 0.0000001)
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assert.InDelta(90.0, lry0, 0.0000001)
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lrxn, lryn := linRegSeries.GetLastValues()
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assert.InDelta(80.0, lrxn, 0.0000001)
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assert.InDelta(80.0, lryn, 0.0000001)
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}
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