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// Copyright ©2015 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 recorder
import (
"image"
"image/color"
"strings"
"testing"
"gonum.org/v1/plot/vg"
)
func TestRecorder(t *testing.T) {
var rec Canvas
rec.Actions = append(rec.Actions, &FillString{Font: "Times-Roman", Size: 12, Point: vg.Point{X: 0, Y: 10}, String: "Text"})
rec.Comment("End of preamble")
rec.Scale(1, 2)
rec.Rotate(0.72)
rec.KeepCaller = true
rec.Stroke(vg.Path{{Type: vg.MoveComp, Pos: vg.Point{X: 3, Y: 4}}})
rec.Push()
rec.Pop()
rec.Translate(vg.Point{3, 4})
rec.KeepCaller = false
rec.SetLineWidth(100)
rec.SetLineDash([]vg.Length{2, 5}, 6)
rec.SetColor(color.RGBA{R: 0x65, G: 0x23, B: 0xf2})
rec.Fill(vg.Path{{Type: vg.MoveComp, Pos: vg.Point{X: 3, Y: 4}}, {Type: vg.LineComp, Pos: vg.Point{X: 2, Y: 3}}, {Type: vg.CloseComp}})
rec.DrawImage(vg.Rectangle{vg.Point{0, 0}, vg.Point{10, 10}}, img)
if len(rec.Actions) != len(want) {
t.Fatalf("unexpected number of actions recorded: got:%d want:%d", len(rec.Actions), len(want))
}
for i, a := range rec.Actions {
if got := a.Call(); !strings.HasSuffix(got, want[i]) {
t.Errorf("unexpected action:\n\tgot: %#v\n\twant: %#v", got, want[i])
}
}
var replay Canvas
err := rec.ReplayOn(&replay)
if err != nil {
t.Errorf("unexpected error: %v", err)
}
for i, a := range rec.Actions {
got := replay.Actions[i].Call()
want := a.Call()
if !strings.HasSuffix(want, got) {
t.Errorf("unexpected action:\n\tgot: %#v\n\twant: %#v", got, want)
}
}
replay.Reset()
rec.Actions = append(rec.Actions, &FillString{Font: "Foo", Size: 12, Point: vg.Point{X: 0, Y: 10}, String: "Bar"})
err = rec.ReplayOn(&replay)
if !strings.HasPrefix(err.Error(), "Unknown font: Foo.") {
t.Errorf("unexpected error: %v", err)
}
}
var img image.Image = image.NewGray(image.Rect(0, 0, 20, 20))
var want = []string{
`FillString("Times-Roman", 12, 0, 10, "Text")`,
`Comment("End of preamble")`,
`Scale(1, 2)`,
`Rotate(0.72)`,
`gonum.org/v1/plot/vg/recorder/recorder_test.go:23 Stroke(vg.Path{vg.PathComp{Type:0, Pos:vg.Point{X:3, Y:4}, Control:[]vg.Point(nil), Radius:0, Start:0, Angle:0}})`,
`gonum.org/v1/plot/vg/recorder/recorder_test.go:24 Push()`,
`gonum.org/v1/plot/vg/recorder/recorder_test.go:25 Pop()`,
`gonum.org/v1/plot/vg/recorder/recorder_test.go:26 Translate(3, 4)`,
`SetLineWidth(100)`,
`SetLineDash([]vg.Length{2, 5}, 6)`,
`SetColor(color.RGBA{R:0x65, G:0x23, B:0xf2, A:0x0})`,
`Fill(vg.Path{vg.PathComp{Type:0, Pos:vg.Point{X:3, Y:4}, Control:[]vg.Point(nil), Radius:0, Start:0, Angle:0}, vg.PathComp{Type:1, Pos:vg.Point{X:2, Y:3}, Control:[]vg.Point(nil), Radius:0, Start:0, Angle:0}, vg.PathComp{Type:4, Pos:vg.Point{X:0, Y:0}, Control:[]vg.Point(nil), Radius:0, Start:0, Angle:0}})`,
`DrawImage(vg.Rectangle{Min:vg.Point{X:0, Y:0}, Max:vg.Point{X:10, Y:10}}, {image.Rectangle{Min:image.Point{X:0, Y:0}, Max:image.Point{X:20, Y:20}}, IMAGE:iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAAAAACo4kLRAAAAFElEQVR4nGJiwAJGBQeVICAAAP//JBgAKeMueQ8AAAAASUVORK5CYII=})`,
}
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