31 lines
631 B
Go
31 lines
631 B
Go
package chart
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import (
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"bytes"
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"testing"
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"github.com/wcharczuk/go-chart/v2/testutil"
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)
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func TestLegend(t *testing.T) {
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// replaced new assertions helper
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graph := Chart{
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Series: []Series{
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ContinuousSeries{
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Name: "A test series",
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XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
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YValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
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},
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},
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}
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//note we have to do this as a separate step because we need a reference to graph
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graph.Elements = []Renderable{
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Legend(&graph),
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}
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buf := bytes.NewBuffer([]byte{})
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err := graph.Render(PNG, buf)
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testutil.AssertNil(t, err)
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testutil.AssertNotZero(t, buf.Len())
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}
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