160 lines
3.2 KiB
Go
160 lines
3.2 KiB
Go
package chart
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import (
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"testing"
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"time"
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"github.com/blendlabs/go-assert"
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)
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func TestMinAndMax(t *testing.T) {
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assert := assert.New(t)
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values := []float64{1.0, 2.0, 3.0, 4.0}
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min, max := MinAndMax(values...)
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assert.Equal(1.0, min)
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assert.Equal(4.0, max)
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}
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func TestMinAndMaxReversed(t *testing.T) {
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assert := assert.New(t)
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values := []float64{4.0, 2.0, 3.0, 1.0}
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min, max := MinAndMax(values...)
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assert.Equal(1.0, min)
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assert.Equal(4.0, max)
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}
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func TestMinAndMaxEmpty(t *testing.T) {
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assert := assert.New(t)
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values := []float64{}
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min, max := MinAndMax(values...)
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assert.Equal(0.0, min)
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assert.Equal(0.0, max)
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}
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func TestMinAndMaxOfTime(t *testing.T) {
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assert := assert.New(t)
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values := []time.Time{
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time.Now().AddDate(0, 0, -1),
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time.Now().AddDate(0, 0, -2),
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time.Now().AddDate(0, 0, -3),
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time.Now().AddDate(0, 0, -4),
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}
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min, max := MinAndMaxOfTime(values...)
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assert.Equal(values[3], min)
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assert.Equal(values[0], max)
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}
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func TestMinAndMaxOfTimeReversed(t *testing.T) {
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assert := assert.New(t)
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values := []time.Time{
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time.Now().AddDate(0, 0, -4),
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time.Now().AddDate(0, 0, -2),
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time.Now().AddDate(0, 0, -3),
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time.Now().AddDate(0, 0, -1),
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}
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min, max := MinAndMaxOfTime(values...)
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assert.Equal(values[0], min)
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assert.Equal(values[3], max)
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}
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func TestMinAndMaxOfTimeEmpty(t *testing.T) {
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assert := assert.New(t)
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values := []time.Time{}
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min, max := MinAndMaxOfTime(values...)
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assert.Equal(time.Time{}, min)
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assert.Equal(time.Time{}, max)
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}
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func TestSlices(t *testing.T) {
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assert := assert.New(t)
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s := Slices(10, 100)
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assert.Len(s, 10)
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assert.Equal(0, s[0])
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assert.Equal(10, s[1])
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assert.Equal(20, s[2])
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assert.Equal(90, s[9])
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}
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func TestGetRoundToForDelta(t *testing.T) {
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assert := assert.New(t)
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assert.Equal(100.0, GetRoundToForDelta(1001.00))
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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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var (
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_degreesToRadians = map[float64]float64{
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0: 0, // !_2pi b/c no irrational nums in floats.
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45: _pi4,
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90: _pi2,
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135: _3pi4,
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180: _pi,
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225: _5pi4,
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270: _3pi2,
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315: _7pi4,
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}
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_compassToRadians = map[float64]float64{
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0: _pi2,
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45: _pi4,
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90: 0, // !_2pi b/c no irrational nums in floats.
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135: _7pi4,
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180: _3pi2,
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225: _5pi4,
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270: _pi,
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315: _3pi4,
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}
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)
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func TestDegreesToRadians(t *testing.T) {
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assert := assert.New(t)
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for d, r := range _degreesToRadians {
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assert.Equal(r, DegreesToRadians(d))
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}
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}
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func TestPercentToRadians(t *testing.T) {
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assert := assert.New(t)
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for d, r := range _degreesToRadians {
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assert.Equal(r, PercentToRadians(d/360.0))
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}
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}
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func TestRadiansToDegrees(t *testing.T) {
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assert := assert.New(t)
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for d, r := range _degreesToRadians {
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assert.Equal(d, RadiansToDegrees(r))
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}
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}
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func TestRadianAdd(t *testing.T) {
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assert := assert.New(t)
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assert.Equal(_pi, RadianAdd(_pi2, _pi2))
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assert.Equal(_3pi2, RadianAdd(_pi2, _pi))
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assert.Equal(_pi, RadianAdd(_pi, _2pi))
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assert.Equal(_pi, RadianAdd(_pi, -_2pi))
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}
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