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grid_test.go
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grid_test.go
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package charts
import (
"strconv"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/wcharczuk/go-chart/v2/drawing"
)
func TestGrid(t *testing.T) {
t.Parallel()
tests := []struct {
render func(*Painter) ([]byte, error)
result string
}{
{
render: func(p *Painter) ([]byte, error) {
_, err := NewGridPainter(p, GridPainterOption{
StrokeColor: drawing.ColorBlack,
Columns: 6,
Rows: 6,
IgnoreFirstRow: true,
IgnoreLastRow: true,
IgnoreFirstColumn: true,
IgnoreLastColumn: true,
}).Render()
if err != nil {
return nil, err
}
return p.Bytes()
},
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"600\" height=\"400\">\\n<path d=\"M 100 0\nL 100 400\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/><path d=\"M 200 0\nL 200 400\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/><path d=\"M 300 0\nL 300 400\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/><path d=\"M 400 0\nL 400 400\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/><path d=\"M 500 0\nL 500 400\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/><path d=\"M 0 66\nL 600 66\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/><path d=\"M 0 133\nL 600 133\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/><path d=\"M 0 200\nL 600 200\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/><path d=\"M 0 266\nL 600 266\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/><path d=\"M 0 333\nL 600 333\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/></svg>",
},
{
render: func(p *Painter) ([]byte, error) {
_, err := NewGridPainter(p, GridPainterOption{
StrokeColor: drawing.ColorBlack,
ColumnSpans: []int{2, 5, 3},
Rows: 6,
}).Render()
if err != nil {
return nil, err
}
return p.Bytes()
},
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"600\" height=\"400\">\\n<path d=\"M 0 0\nL 0 400\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/><path d=\"M 120 0\nL 120 400\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/><path d=\"M 420 0\nL 420 400\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/><path d=\"M 600 0\nL 600 400\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/><path d=\"M 0 0\nL 600 0\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/><path d=\"M 0 66\nL 600 66\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/><path d=\"M 0 133\nL 600 133\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/><path d=\"M 0 200\nL 600 200\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/><path d=\"M 0 266\nL 600 266\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/><path d=\"M 0 333\nL 600 333\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/><path d=\"M 0 400\nL 600 400\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/></svg>",
},
}
for i, tt := range tests {
t.Run(strconv.Itoa(i), func(t *testing.T) {
p, err := NewPainter(PainterOptions{
OutputFormat: ChartOutputSVG,
Width: 600,
Height: 400,
}, PainterThemeOption(GetTheme(ThemeLight)))
require.NoError(t, err)
data, err := tt.render(p)
require.NoError(t, err)
assert.Equal(t, tt.result, string(data))
})
}
}