go-chart/chart_test.go
Will Charczuk cbc4672f1e updates.
2016-07-07 14:44:03 -07:00

35 lines
589 B
Go

package chart
import (
"bytes"
"testing"
"time"
"github.com/blendlabs/go-assert"
)
func TestChartSingleSeries(t *testing.T) {
assert := assert.New(t)
now := time.Now()
c := Chart{
Title: "Hello!",
Width: 1024,
Height: 400,
YRange: Range{
Min: 0.0,
Max: 4.0,
},
Series: []Series{
TimeSeries{
Name: "goog",
XValues: []time.Time{now.AddDate(0, 0, -3), now.AddDate(0, 0, -2), now.AddDate(0, 0, -1)},
YValues: []float64{1.0, 2.0, 3.0},
},
},
}
buffer := bytes.NewBuffer([]byte{})
c.Render(PNG, buffer)
assert.NotEmpty(buffer.Bytes())
}