pkg/units/size_test.go
Alexander Larsson c49c2a7df5 pkg/units: Add FromHumanSize
This does the "reverse" of HumanSize, i.e. maps a string to an int64
using SI prefixes for the extension.

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
2014-06-05 10:02:37 +02:00

89 lines
2.9 KiB
Go

package units
import (
"strings"
"testing"
)
func TestHumanSize(t *testing.T) {
size := strings.Trim(HumanSize(1000), " \t")
expect := "1 kB"
if size != expect {
t.Errorf("1000 -> expected '%s', got '%s'", expect, size)
}
size = strings.Trim(HumanSize(1024), " \t")
expect = "1.024 kB"
if size != expect {
t.Errorf("1024 -> expected '%s', got '%s'", expect, size)
}
}
func TestFromHumanSize(t *testing.T) {
assertFromHumanSize(t, "32", false, 32)
assertFromHumanSize(t, "32b", false, 32)
assertFromHumanSize(t, "32B", false, 32)
assertFromHumanSize(t, "32k", false, 32*1000)
assertFromHumanSize(t, "32K", false, 32*1000)
assertFromHumanSize(t, "32kb", false, 32*1000)
assertFromHumanSize(t, "32Kb", false, 32*1000)
assertFromHumanSize(t, "32Mb", false, 32*1000*1000)
assertFromHumanSize(t, "32Gb", false, 32*1000*1000*1000)
assertFromHumanSize(t, "32Tb", false, 32*1000*1000*1000*1000)
assertFromHumanSize(t, "8Pb", false, 8*1000*1000*1000*1000*1000)
assertFromHumanSize(t, "", true, -1)
assertFromHumanSize(t, "hello", true, -1)
assertFromHumanSize(t, "-32", true, -1)
assertFromHumanSize(t, " 32 ", true, -1)
assertFromHumanSize(t, "32 mb", true, -1)
assertFromHumanSize(t, "32m b", true, -1)
assertFromHumanSize(t, "32bm", true, -1)
}
func assertFromHumanSize(t *testing.T, size string, expectError bool, expectedBytes int64) {
actualBytes, err := FromHumanSize(size)
if (err != nil) && !expectError {
t.Errorf("Unexpected error parsing '%s': %s", size, err)
}
if (err == nil) && expectError {
t.Errorf("Expected to get an error parsing '%s', but got none (bytes=%d)", size, actualBytes)
}
if actualBytes != expectedBytes {
t.Errorf("Expected '%s' to parse as %d bytes, got %d", size, expectedBytes, actualBytes)
}
}
func TestRAMInBytes(t *testing.T) {
assertRAMInBytes(t, "32", false, 32)
assertRAMInBytes(t, "32b", false, 32)
assertRAMInBytes(t, "32B", false, 32)
assertRAMInBytes(t, "32k", false, 32*1024)
assertRAMInBytes(t, "32K", false, 32*1024)
assertRAMInBytes(t, "32kb", false, 32*1024)
assertRAMInBytes(t, "32Kb", false, 32*1024)
assertRAMInBytes(t, "32Mb", false, 32*1024*1024)
assertRAMInBytes(t, "32Gb", false, 32*1024*1024*1024)
assertRAMInBytes(t, "", true, -1)
assertRAMInBytes(t, "hello", true, -1)
assertRAMInBytes(t, "-32", true, -1)
assertRAMInBytes(t, " 32 ", true, -1)
assertRAMInBytes(t, "32 mb", true, -1)
assertRAMInBytes(t, "32m b", true, -1)
assertRAMInBytes(t, "32bm", true, -1)
}
func assertRAMInBytes(t *testing.T, size string, expectError bool, expectedBytes int64) {
actualBytes, err := RAMInBytes(size)
if (err != nil) && !expectError {
t.Errorf("Unexpected error parsing '%s': %s", size, err)
}
if (err == nil) && expectError {
t.Errorf("Expected to get an error parsing '%s', but got none (bytes=%d)", size, actualBytes)
}
if actualBytes != expectedBytes {
t.Errorf("Expected '%s' to parse as %d bytes, got %d", size, expectedBytes, actualBytes)
}
}