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moby--moby/pkg/units/size_test.go

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Go
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package units
import (
"reflect"
"runtime"
"strings"
"testing"
)
func TestBytesSize(t *testing.T) {
assertEquals(t, "1 KiB", BytesSize(1024))
assertEquals(t, "1 MiB", BytesSize(1024*1024))
assertEquals(t, "1 MiB", BytesSize(1048576))
assertEquals(t, "2 MiB", BytesSize(2*MiB))
assertEquals(t, "3.42 GiB", BytesSize(3.42*GiB))
assertEquals(t, "5.372 TiB", BytesSize(5.372*TiB))
assertEquals(t, "2.22 PiB", BytesSize(2.22*PiB))
}
func TestHumanSize(t *testing.T) {
assertEquals(t, "1 kB", HumanSize(1000))
assertEquals(t, "1.024 kB", HumanSize(1024))
assertEquals(t, "1 MB", HumanSize(1000000))
assertEquals(t, "1.049 MB", HumanSize(1048576))
assertEquals(t, "2 MB", HumanSize(2*MB))
assertEquals(t, "3.42 GB", HumanSize(float64(3.42*GB)))
assertEquals(t, "5.372 TB", HumanSize(float64(5.372*TB)))
assertEquals(t, "2.22 PB", HumanSize(float64(2.22*PB)))
}
func TestFromHumanSize(t *testing.T) {
assertSuccessEquals(t, 32, FromHumanSize, "32")
assertSuccessEquals(t, 32, FromHumanSize, "32b")
assertSuccessEquals(t, 32, FromHumanSize, "32B")
assertSuccessEquals(t, 32*KB, FromHumanSize, "32k")
assertSuccessEquals(t, 32*KB, FromHumanSize, "32K")
assertSuccessEquals(t, 32*KB, FromHumanSize, "32kb")
assertSuccessEquals(t, 32*KB, FromHumanSize, "32Kb")
assertSuccessEquals(t, 32*MB, FromHumanSize, "32Mb")
assertSuccessEquals(t, 32*GB, FromHumanSize, "32Gb")
assertSuccessEquals(t, 32*TB, FromHumanSize, "32Tb")
assertSuccessEquals(t, 32*PB, FromHumanSize, "32Pb")
assertError(t, FromHumanSize, "")
assertError(t, FromHumanSize, "hello")
assertError(t, FromHumanSize, "-32")
assertError(t, FromHumanSize, "32.3")
assertError(t, FromHumanSize, " 32 ")
assertError(t, FromHumanSize, "32.3Kb")
assertError(t, FromHumanSize, "32 mb")
assertError(t, FromHumanSize, "32m b")
assertError(t, FromHumanSize, "32bm")
}
func TestRAMInBytes(t *testing.T) {
assertSuccessEquals(t, 32, RAMInBytes, "32")
assertSuccessEquals(t, 32, RAMInBytes, "32b")
assertSuccessEquals(t, 32, RAMInBytes, "32B")
assertSuccessEquals(t, 32*KiB, RAMInBytes, "32k")
assertSuccessEquals(t, 32*KiB, RAMInBytes, "32K")
assertSuccessEquals(t, 32*KiB, RAMInBytes, "32kb")
assertSuccessEquals(t, 32*KiB, RAMInBytes, "32Kb")
assertSuccessEquals(t, 32*MiB, RAMInBytes, "32Mb")
assertSuccessEquals(t, 32*GiB, RAMInBytes, "32Gb")
assertSuccessEquals(t, 32*TiB, RAMInBytes, "32Tb")
assertSuccessEquals(t, 32*PiB, RAMInBytes, "32Pb")
assertSuccessEquals(t, 32*PiB, RAMInBytes, "32PB")
assertSuccessEquals(t, 32*PiB, RAMInBytes, "32P")
assertError(t, RAMInBytes, "")
assertError(t, RAMInBytes, "hello")
assertError(t, RAMInBytes, "-32")
assertError(t, RAMInBytes, "32.3")
assertError(t, RAMInBytes, " 32 ")
assertError(t, RAMInBytes, "32.3Kb")
assertError(t, RAMInBytes, "32 mb")
assertError(t, RAMInBytes, "32m b")
assertError(t, RAMInBytes, "32bm")
}
func assertEquals(t *testing.T, expected, actual interface{}) {
if expected != actual {
t.Errorf("Expected '%v' but got '%v'", expected, actual)
}
}
// func that maps to the parse function signatures as testing abstraction
type parseFn func(string) (int64, error)
// Define 'String()' for pretty-print
func (fn parseFn) String() string {
fnName := runtime.FuncForPC(reflect.ValueOf(fn).Pointer()).Name()
return fnName[strings.LastIndex(fnName, ".")+1:]
}
func assertSuccessEquals(t *testing.T, expected int64, fn parseFn, arg string) {
res, err := fn(arg)
if err != nil || res != expected {
t.Errorf("%s(\"%s\") -> expected '%d' but got '%d' with error '%v'", fn, arg, expected, res, err)
}
}
func assertError(t *testing.T, fn parseFn, arg string) {
res, err := fn(arg)
if err == nil && res != -1 {
t.Errorf("%s(\"%s\") -> expected error but got '%d'", fn, arg, res)
}
}