go-chart/chart_test.go

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2016-07-07 03:54:00 +02:00
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,
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())
}