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byteformatter_test.go
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byteformatter_test.go
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package progressio
import "testing"
func Test_getUnit(t *testing.T) {
// This is to more visually exercise the top edge case of the getUnit routine
var distanceSize = SizeSystem{
Name: "distance",
MultiPlier: 1000,
Names: []string{"metre", "kilometre"},
Shorts: []string{"m", "km"},
}
type args struct {
ss SizeSystem
size int64
}
tests := []struct {
name string
args args
wantDivider int64
wantName string
wantShort string
}{
{
name: "IEC 0",
args: args{ss: IEC, size: 0},
wantDivider: Byte, wantName: "byte", wantShort: "B",
},
{
name: "IEC 1234",
args: args{ss: IEC, size: 1234},
wantDivider: KibiByte, wantName: "kibibyte", wantShort: "KiB",
},
{
name: "IEC 1234567",
args: args{ss: IEC, size: 1234567},
wantDivider: MebiByte, wantName: "mebibyte", wantShort: "MiB",
},
{
name: "JEDEC 1234",
args: args{ss: JEDEC, size: 1234},
wantDivider: KibiByte, wantName: "kilobyte", wantShort: "KB",
},
{
name: "JEDEC 1234567",
args: args{ss: JEDEC, size: 1234567},
wantDivider: MebiByte, wantName: "megabyte", wantShort: "MB",
},
{ // Uses top element
name: "IEC top edge case",
args: args{ss: IEC, size: PebiByte},
wantDivider: PebiByte, wantName: "pebibyte", wantShort: "PiB",
},
{ // Exceeds top element
name: "IEC exceeds top edge case",
args: args{ss: IEC, size: IECMultiplier * PebiByte},
wantDivider: PebiByte, wantName: "pebibyte", wantShort: "PiB",
},
{
name: "Distance 1",
args: args{ss: distanceSize, size: 1},
wantDivider: 1, wantName: "metre", wantShort: "m",
},
{
name: "Distance 1000",
args: args{ss: distanceSize, size: 1000},
wantDivider: 1000, wantName: "kilometre", wantShort: "km",
},
{ // There is no mega-metre defined, so should return highest mapped divisor - 1000 for km
name: "Distance 1000000",
args: args{ss: distanceSize, size: 1000000},
wantDivider: 1000, wantName: "kilometre", wantShort: "km",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
gotDivider, gotName, gotShort := getUnit(tt.args.ss, tt.args.size)
if gotDivider != tt.wantDivider {
t.Errorf("getUnit() gotDivider = %v, want %v", gotDivider, tt.wantDivider)
}
if gotName != tt.wantName {
t.Errorf("getUnit() gotName = %v, want %v", gotName, tt.wantName)
}
if gotShort != tt.wantShort {
t.Errorf("getUnit() gotShort = %v, want %v", gotShort, tt.wantShort)
}
})
}
}