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painter_test.go
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painter_test.go
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package charts
import (
"math"
"strconv"
"testing"
"github.com/golang/freetype/truetype"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/go-analyze/charts/chartdraw"
"github.com/go-analyze/charts/chartdraw/drawing"
)
func TestPainterOption(t *testing.T) {
t.Parallel()
font := &truetype.Font{}
d, err := NewPainter(PainterOptions{
OutputFormat: ChartOutputSVG,
Width: 800,
Height: 600,
},
PainterBoxOption(Box{Right: 400, Bottom: 300}),
PainterPaddingOption(Box{Left: 1, Top: 2, Right: 3, Bottom: 4}),
PainterFontOption(font),
PainterStyleOption(Style{ClassName: "test"}),
)
require.NoError(t, err)
assert.Equal(t, Box{
Left: 1,
Top: 2,
Right: 397,
Bottom: 296,
}, d.box)
assert.Equal(t, font, d.font)
assert.Equal(t, "test", d.style.ClassName)
}
func TestPainter(t *testing.T) {
t.Parallel()
tests := []struct {
name string
fn func(*Painter)
result string
}{
{
name: "moveTo_lineTo",
fn: func(p *Painter) {
p.MoveTo(1, 1)
p.LineTo(2, 2)
p.Stroke()
},
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" viewBox=\"0 0 400 300\"><path d=\"M 6 11\nL 7 12\" style=\"stroke-width:0;stroke:none;fill:none\"/></svg>",
},
{
name: "circle",
fn: func(p *Painter) {
p.Circle(5, 2, 3)
},
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" viewBox=\"0 0 400 300\"><circle cx=\"7\" cy=\"13\" r=\"5\" style=\"stroke-width:0;stroke:none;fill:none\"/></svg>",
},
{
name: "text",
fn: func(p *Painter) {
p.Text("hello world!", 3, 6)
},
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" viewBox=\"0 0 400 300\"><text x=\"8\" y=\"16\" style=\"stroke-width:0;stroke:none;fill:none;font-family:'Roboto Medium',sans-serif\">hello world!</text></svg>",
},
{
name: "line",
fn: func(p *Painter) {
p.SetDrawingStyle(Style{
StrokeColor: drawing.ColorBlack,
StrokeWidth: 1,
})
p.LineStroke([]Point{
{X: 1, Y: 2},
{X: 3, Y: 4},
})
},
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" viewBox=\"0 0 400 300\"><path d=\"M 6 12\nL 8 14\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/></svg>",
},
{
name: "background",
fn: func(p *Painter) {
p.SetBackground(400, 300, chartdraw.ColorWhite)
},
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" viewBox=\"0 0 400 300\"><path d=\"M 0 0\nL 400 0\nL 400 300\nL 0 300\nL 0 0\" style=\"stroke-width:0;stroke:none;fill:rgba(255,255,255,1.0)\"/></svg>",
},
{
name: "arc",
fn: func(p *Painter) {
p.SetStyle(Style{
StrokeWidth: 1,
StrokeColor: drawing.ColorBlack,
FillColor: drawing.ColorBlue,
})
p.ArcTo(100, 100, 100, 100, 0, math.Pi/2)
p.Close()
p.FillStroke()
},
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" viewBox=\"0 0 400 300\"><path d=\"M 205 110\nA 100 100 90.00 0 1 105 210\nZ\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:rgba(0,0,255,1.0)\"/></svg>",
},
{
name: "pin",
fn: func(p *Painter) {
p.SetStyle(Style{
StrokeWidth: 1,
StrokeColor: Color{R: 84, G: 112, B: 198, A: 255},
FillColor: Color{R: 84, G: 112, B: 198, A: 255},
})
p.Pin(30, 30, 30)
},
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" viewBox=\"0 0 400 300\"><path d=\"M 32 47\nA 15 15 330.00 1 1 38 47\nL 35 33\nZ\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/><path d=\"M 20 33\nQ35,70 50,33\nZ\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/></svg>",
},
{
name: "arrow_left",
fn: func(p *Painter) {
p.SetStyle(Style{
StrokeWidth: 1,
StrokeColor: Color{R: 84, G: 112, B: 198, A: 255},
FillColor: Color{R: 84, G: 112, B: 198, A: 255},
})
p.ArrowLeft(30, 30, 16, 10)
},
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" viewBox=\"0 0 400 300\"><path d=\"M 51 35\nL 35 40\nL 51 45\nL 46 40\nL 51 35\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/></svg>",
},
{
name: "arrow_right",
fn: func(p *Painter) {
p.SetStyle(Style{
StrokeWidth: 1,
StrokeColor: Color{R: 84, G: 112, B: 198, A: 255},
FillColor: Color{R: 84, G: 112, B: 198, A: 255},
})
p.ArrowRight(30, 30, 16, 10)
},
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" viewBox=\"0 0 400 300\"><path d=\"M 19 35\nL 35 40\nL 19 45\nL 24 40\nL 19 35\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/></svg>",
},
{
name: "arrow_top",
fn: func(p *Painter) {
p.SetStyle(Style{
StrokeWidth: 1,
StrokeColor: Color{R: 84, G: 112, B: 198, A: 255},
FillColor: Color{R: 84, G: 112, B: 198, A: 255},
})
p.ArrowTop(30, 30, 10, 16)
},
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" viewBox=\"0 0 400 300\"><path d=\"M 30 40\nL 35 24\nL 40 40\nL 35 35\nL 30 40\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/></svg>",
},
{
name: "arrow_bottom",
fn: func(p *Painter) {
p.SetStyle(Style{
StrokeWidth: 1,
StrokeColor: Color{R: 84, G: 112, B: 198, A: 255},
FillColor: Color{R: 84, G: 112, B: 198, A: 255},
})
p.ArrowBottom(30, 30, 10, 16)
},
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" viewBox=\"0 0 400 300\"><path d=\"M 30 24\nL 35 40\nL 40 24\nL 35 30\nL 30 24\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/></svg>",
},
{
name: "mark_line",
fn: func(p *Painter) {
p.SetStyle(Style{
StrokeWidth: 1,
StrokeColor: Color{R: 84, G: 112, B: 198, A: 255},
FillColor: Color{R: 84, G: 112, B: 198, A: 255},
StrokeDashArray: []float64{4, 2},
})
p.MarkLine(0, 20, 300)
},
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" viewBox=\"0 0 400 300\"><circle cx=\"8\" cy=\"30\" r=\"3\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/><path stroke-dasharray=\"4.0, 2.0\" d=\"\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/><path stroke-dasharray=\"4.0, 2.0\" d=\"M 14 30\nL 289 30\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/><path stroke-dasharray=\"4.0, 2.0\" d=\"M 289 25\nL 305 30\nL 289 35\nL 294 30\nL 289 25\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/></svg>",
},
{
name: "polygon",
fn: func(p *Painter) {
p.SetStyle(Style{
StrokeWidth: 1,
StrokeColor: Color{R: 84, G: 112, B: 198, A: 255},
})
p.Polygon(Point{X: 100, Y: 100}, 50, 6)
},
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" viewBox=\"0 0 400 300\"><path d=\"M 105 60\nL 148 85\nL 148 134\nL 105 160\nL 62 135\nL 62 86\nL 105 60\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:none\"/></svg>",
},
{
name: "fillArea",
fn: func(p *Painter) {
p.SetDrawingStyle(Style{
FillColor: Color{R: 84, G: 112, B: 198, A: 255},
})
p.FillArea([]Point{
{X: 0, Y: 0},
{X: 0, Y: 100},
{X: 100, Y: 100},
{X: 0, Y: 0},
})
},
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" viewBox=\"0 0 400 300\"><path d=\"M 5 10\nL 5 110\nL 105 110\nL 5 10\" style=\"stroke-width:0;stroke:none;fill:rgba(84,112,198,1.0)\"/></svg>",
},
}
for i, tt := range tests {
t.Run(strconv.Itoa(i)+"-"+tt.name, func(t *testing.T) {
d, err := NewPainter(PainterOptions{
OutputFormat: ChartOutputSVG,
Width: 400,
Height: 300,
}, PainterPaddingOption(chartdraw.Box{Left: 5, Top: 10}))
require.NoError(t, err)
tt.fn(d)
data, err := d.Bytes()
require.NoError(t, err)
assertEqualSVG(t, tt.result, string(data))
})
}
}
func TestRoundedRect(t *testing.T) {
t.Parallel()
tests := []struct {
name string
fn func(*Painter)
result string
}{
{
name: "RoundFully",
fn: func(p *Painter) {
p.RoundedRect(Box{
Left: 10,
Right: 30,
Bottom: 150,
Top: 10,
}, 5, true, true)
},
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" viewBox=\"0 0 400 300\"><path d=\"M 15 10\nL 25 10\nL 25 10\nA 5 5 90.00 0 1 30 15\nL 30 145\nL 30 145\nA 5 5 90.00 0 1 25 150\nL 15 150\nL 15 150\nA 5 5 90.00 0 1 10 145\nL 10 15\nL 10 15\nA 5 5 90.00 0 1 15 10\nZ\" style=\"stroke-width:1;stroke:rgba(0,0,255,1.0);fill:rgba(0,0,255,1.0)\"/><path d=\"\" style=\"stroke-width:1;stroke:rgba(0,0,255,1.0);fill:rgba(0,0,255,1.0)\"/></svg>",
},
{
name: "SquareTop",
fn: func(p *Painter) {
p.RoundedRect(Box{
Left: 10,
Right: 30,
Bottom: 150,
Top: 10,
}, 5, false, true)
},
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" viewBox=\"0 0 400 300\"><path d=\"M 10 10\nL 30 10\nL 30 145\nL 30 145\nA 5 5 90.00 0 1 25 150\nL 15 150\nL 15 150\nA 5 5 90.00 0 1 10 145\nL 10 10\nZ\" style=\"stroke-width:1;stroke:rgba(0,0,255,1.0);fill:rgba(0,0,255,1.0)\"/><path d=\"\" style=\"stroke-width:1;stroke:rgba(0,0,255,1.0);fill:rgba(0,0,255,1.0)\"/></svg>",
},
{
name: "SquareBottom",
fn: func(p *Painter) {
p.RoundedRect(Box{
Left: 10,
Right: 30,
Bottom: 150,
Top: 10,
}, 5, true, false)
},
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" viewBox=\"0 0 400 300\"><path d=\"M 15 10\nL 25 10\nL 25 10\nA 5 5 90.00 0 1 30 15\nL 30 150\nL 10 150\nL 10 15\nL 10 15\nA 5 5 90.00 0 1 15 10\nZ\" style=\"stroke-width:1;stroke:rgba(0,0,255,1.0);fill:rgba(0,0,255,1.0)\"/><path d=\"\" style=\"stroke-width:1;stroke:rgba(0,0,255,1.0);fill:rgba(0,0,255,1.0)\"/></svg>",
},
}
for i, tc := range tests {
t.Run(strconv.Itoa(i)+"-"+tc.name, func(t *testing.T) {
p, err := NewPainter(PainterOptions{
Width: 400,
Height: 300,
OutputFormat: ChartOutputSVG,
})
require.NoError(t, err)
p.OverrideDrawingStyle(Style{
FillColor: drawing.ColorBlue,
StrokeWidth: 1,
StrokeColor: drawing.ColorBlue,
})
tc.fn(p)
buf, err := p.Bytes()
require.NoError(t, err)
assertEqualSVG(t, tc.result, string(buf))
})
}
}
func TestPainterTextFit(t *testing.T) {
t.Parallel()
p, err := NewPainter(PainterOptions{
OutputFormat: ChartOutputSVG,
Width: 400,
Height: 300,
})
require.NoError(t, err)
style := Style{
FontSize: 12,
FontColor: chartdraw.ColorBlack,
Font: GetDefaultFont(),
}
p.SetStyle(style)
box := p.TextFit("Hello World!", 0, 20, 80)
assert.Equal(t, chartdraw.Box{Right: 45, Bottom: 35}, box)
box = p.TextFit("Hello World!", 0, 100, 200)
assert.Equal(t, chartdraw.Box{Right: 84, Bottom: 15}, box)
buf, err := p.Bytes()
require.NoError(t, err)
assertEqualSVG(t, "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" viewBox=\"0 0 400 300\"><text x=\"0\" y=\"20\" style=\"stroke-width:0;stroke:none;fill:rgba(51,51,51,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif\">Hello</text><text x=\"0\" y=\"40\" style=\"stroke-width:0;stroke:none;fill:rgba(51,51,51,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif\">World!</text><text x=\"0\" y=\"100\" style=\"stroke-width:0;stroke:none;fill:rgba(51,51,51,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif\">Hello World!</text></svg>", string(buf))
}