test: add series and legend test

charts_test.go

@@ -0,0 +1,143 @@
+// MIT License
+
+// Copyright (c) 2021 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 (
+	"errors"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/wcharczuk/go-chart/v2"
+)
+
+func TestChartsOptions(t *testing.T) {
+	assert := assert.New(t)
+
+	o := Options{}
+
+	assert.Equal(errors.New("series can not be empty"), o.validate())
+
+	o.Series = []Series{
+		{
+			Data: []SeriesData{
+				{
+					Value: 1,
+				},
+			},
+		},
+	}
+	assert.Equal(errors.New("series and xAxis is not matched"), o.validate())
+	o.XAxis.Data = []string{
+		"1",
+	}
+	assert.Nil(o.validate())
+
+	assert.Equal(DefaultChartWidth, o.getWidth())
+	o.Width = 10
+	assert.Equal(10, o.getWidth())
+
+	assert.Equal(DefaultChartHeight, o.getHeight())
+	o.Height = 10
+	assert.Equal(10, o.getHeight())
+
+	padding := chart.NewBox(10, 10, 10, 10)
+	o.Padding = padding
+	assert.Equal(padding, o.getBackground().Padding)
+}
+
+func TestNewPieChart(t *testing.T) {
+	assert := assert.New(t)
+
+	data := []Series{
+		{
+			Data: []SeriesData{
+				{
+					Value: 10,
+				},
+			},
+			Name: "chrome",
+		},
+		{
+			Data: []SeriesData{
+				{
+					Value: 2,
+				},
+			},
+			Name: "edge",
+		},
+	}
+	pie := newPieChart(Options{
+		Series: data,
+	})
+	for index, item := range pie.Values {
+		assert.Equal(data[index].Name, item.Label)
+		assert.Equal(data[index].Data[0].Value, item.Value)
+	}
+}
+
+func TestNewChart(t *testing.T) {
+	assert := assert.New(t)
+
+	data := []Series{
+		{
+			Data: []SeriesData{
+				{
+					Value: 10,
+				},
+				{
+					Value: 20,
+				},
+			},
+			Name: "chrome",
+		},
+		{
+			Data: []SeriesData{
+				{
+					Value: 2,
+				},
+				{
+					Value: 3,
+				},
+			},
+			Name: "edge",
+		},
+	}
+
+	c := newChart(Options{
+		Series: data,
+	})
+	assert.Empty(c.Elements)
+	for index, series := range c.Series {
+		assert.Equal(data[index].Name, series.GetName())
+	}
+
+	c = newChart(Options{
+		Legend: Legend{
+			Data: []string{
+				"chrome",
+				"edge",
+			},
+		},
+	})
+	assert.Equal(1, len(c.Elements))
+}