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package controlplane
import "testing"
func TestChargeChange(t *testing.T) {
tests := []struct {
name string
current, previous int64
want *float64
}{
{name: "no activity", current: 0, previous: 0, want: nil},
{name: "new spend has no finite percentage", current: 25, previous: 0, want: nil},
{name: "increase", current: 125, previous: 25, want: floatPointer(400)},
{name: "decrease", current: 25, previous: 100, want: floatPointer(-75)},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
got := chargeChange(test.current, test.previous)
if test.want == nil {
if got != nil {
t.Fatalf("chargeChange() = %v, want nil", *got)
}
return
}
if got == nil || *got != *test.want {
t.Fatalf("chargeChange() = %v, want %v", got, *test.want)
}
})
}
}
func floatPointer(value float64) *float64 {
return &value
}
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