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// Copyright ©2019 The Gonum Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package vgsvg_test
import (
"bytes"
"io/ioutil"
"testing"
"gonum.org/v1/plot"
"gonum.org/v1/plot/cmpimg"
"gonum.org/v1/plot/plotter"
"gonum.org/v1/plot/vg"
"gonum.org/v1/plot/vg/draw"
"gonum.org/v1/plot/vg/vgsvg"
)
func TestSVG(t *testing.T) {
cmpimg.CheckPlot(Example, t, "scatter.svg")
}
func TestNewWith(t *testing.T) {
p, err := plot.New()
if err != nil {
t.Fatalf("could not create plot: %v", err)
}
p.Title.Text = "Scatter plot"
p.X.Label.Text = "X"
p.Y.Label.Text = "Y"
scatter, err := plotter.NewScatter(plotter.XYs{{1, 1}, {0, 1}, {0, 0}})
if err != nil {
t.Fatalf("could not create scatter: %v", err)
}
p.Add(scatter)
c := vgsvg.NewWith(vgsvg.UseWH(5*vg.Centimeter, 5*vg.Centimeter))
p.Draw(draw.New(c))
b := new(bytes.Buffer)
if _, err = c.WriteTo(b); err != nil {
t.Fatal(err)
}
want, err := ioutil.ReadFile("testdata/scatter_golden.svg")
if err != nil {
t.Fatal(err)
}
ok, err := cmpimg.Equal("svg", b.Bytes(), want)
if err != nil {
t.Fatalf("could not compare images: %v", err)
}
if !ok {
t.Fatalf("images differ:\ngot:\n%s\nwant:\n%s\n", b.Bytes(), want)
}
}
func TestHtmlEscape(t *testing.T) {
p, err := plot.New()
if err != nil {
t.Fatalf("could not create plot: %v", err)
}
p.Title.Text = "Scatter & line plot"
p.X.Label.Text = "X"
p.Y.Label.Text = "Y"
scatter, err := plotter.NewScatter(plotter.XYs{{1, 1}, {0, 1}, {0, 0}})
if err != nil {
t.Fatalf("could not create scatter: %v", err)
}
p.Add(scatter)
line, err := plotter.NewLine(plotter.XYs{{1, 1}, {0, 1}, {0, 0}})
if err != nil {
t.Fatalf("could not create scatter: %v", err)
}
line.Width = 0.5
p.Add(line)
c := vgsvg.NewWith(vgsvg.UseWH(5*vg.Centimeter, 5*vg.Centimeter))
p.Draw(draw.New(c))
b := new(bytes.Buffer)
if _, err = c.WriteTo(b); err != nil {
t.Fatal(err)
}
want, err := ioutil.ReadFile("testdata/scatter_line_golden.svg")
if err != nil {
t.Fatal(err)
}
ok, err := cmpimg.Equal("svg", b.Bytes(), want)
if err != nil {
t.Fatalf("could not compare images: %v", err)
}
if !ok {
t.Fatalf("images differ:\ngot:\n%s\nwant:\n%s\n", b.Bytes(), want)
}
}
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