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fix gauge percentage calculation for the case when min value is not zero

This commit is contained in:
sqshq 2019-08-25 00:05:10 -04:00
parent cec214dc0d
commit b45b3882b0
2 changed files with 35 additions and 4 deletions
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12
component/gauge/gauge.go
View File

@ -82,10 +82,7 @@ func (g *Gauge) Draw(buffer *ui.Buffer) {
g.Block.Draw(buffer)
percent := 0.0
if g.curValue != 0 && g.maxValue != g.minValue {
percent = (100 * g.curValue) / (g.maxValue - g.minValue)
}
percent := calculatePercent(g)
var label string
if g.percentOnly {
@ -121,3 +118,10 @@ func (g *Gauge) Draw(buffer *ui.Buffer) {
component.RenderAlert(g.Alert, g.Rectangle, buffer)
}
func calculatePercent(g *Gauge) float64 {
if g.curValue != g.minValue && g.maxValue != g.minValue {
return (100 * (g.curValue - g.minValue)) / (g.maxValue - g.minValue)
}
return 0
}

27
component/gauge/gauge_test.go Normal file
View File

@ -0,0 +1,27 @@
package gauge
import "testing"
func Test_calculatePercent(t *testing.T) {
type args struct {
g *Gauge
}
tests := []struct {
name string
args args
want float64
}{
{"should calculate percent between 0 and 60", args{&Gauge{minValue: 0, maxValue: 60, curValue: 45}}, 75},
{"should calculate percent between 10 and 60", args{&Gauge{minValue: 10, maxValue: 60, curValue: 59}}, 98},
{"should calculate percent between -20 and 60", args{&Gauge{minValue: -20, maxValue: 60, curValue: 0}}, 25},
{"should calculate percent when cur value = min value", args{&Gauge{minValue: -10, maxValue: 60, curValue: -10}}, 0},
{"should calculate percent when min value = max value", args{&Gauge{minValue: -124, maxValue: -124, curValue: -124}}, 0},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := calculatePercent(tt.args.g); got != tt.want {
t.Errorf("calculatePercent() = %v, want %v", got, tt.want)
}
})
}
}