// MIT License // Copyright (c) 2022 Tree Xie // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // The above copyright notice and this permission notice shall be included in all // copies or substantial portions of the Software. // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE // SOFTWARE. package charts import ( "testing" "github.com/stretchr/testify/assert" ) func TestPieChart(t *testing.T) { assert := assert.New(t) tests := []struct { render func(*Painter) ([]byte, error) result string }{ { render: func(p *Painter) ([]byte, error) { values := []float64{ 1048, 735, 580, 484, 300, } _, err := NewPieChart(p, PieChartOption{ SeriesList: NewPieSeriesList(values, PieSeriesOption{ Label: SeriesLabel{ Show: true, }, }), Title: TitleOption{ Text: "Rainfall vs Evaporation", Subtext: "Fake Data", Left: PositionCenter, }, Padding: Box{ Top: 20, Right: 20, Bottom: 20, Left: 20, }, Legend: LegendOption{ Orient: OrientVertical, Data: []string{ "Search Engine", "Direct", "Email", "Union Ads", "Video Ads", }, Left: PositionLeft, }, }).Render() if err != nil { return nil, err } return p.Bytes() }, result: "", }, } for _, tt := range tests { p, err := NewPainter(PainterOptions{ Type: ChartOutputSVG, Width: 600, Height: 400, }, PainterThemeOption(defaultTheme)) assert.Nil(err) data, err := tt.render(p.Child(PainterPaddingOption(Box{ Left: 20, Top: 20, Right: 20, Bottom: 20, }))) assert.Nil(err) assert.Equal(tt.result, string(data)) } }