mirror of https://github.com/k3s-io/k3s
82 lines
2.1 KiB
Go
82 lines
2.1 KiB
Go
/*
|
|
Copyright 2016 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package aws
|
|
|
|
import "testing"
|
|
|
|
func TestDeviceAllocator(t *testing.T) {
|
|
tests := []struct {
|
|
name string
|
|
existingDevices ExistingDevices
|
|
deviceMap map[mountDevice]int
|
|
expectedOutput mountDevice
|
|
}{
|
|
{
|
|
"empty device list with wrap",
|
|
ExistingDevices{},
|
|
generateUnsortedDeviceList(),
|
|
"bd", // next to 'zz' is the first one, 'ba'
|
|
},
|
|
}
|
|
|
|
for _, test := range tests {
|
|
allocator := NewDeviceAllocator().(*deviceAllocator)
|
|
for k, v := range test.deviceMap {
|
|
allocator.possibleDevices[k] = v
|
|
}
|
|
|
|
got, err := allocator.GetNext(test.existingDevices)
|
|
if err != nil {
|
|
t.Errorf("text %q: unexpected error: %v", test.name, err)
|
|
}
|
|
if got != test.expectedOutput {
|
|
t.Errorf("text %q: expected %q, got %q", test.name, test.expectedOutput, got)
|
|
}
|
|
}
|
|
}
|
|
|
|
func generateUnsortedDeviceList() map[mountDevice]int {
|
|
possibleDevices := make(map[mountDevice]int)
|
|
for _, firstChar := range []rune{'b', 'c'} {
|
|
for i := 'a'; i <= 'z'; i++ {
|
|
dev := mountDevice([]rune{firstChar, i})
|
|
possibleDevices[dev] = 3
|
|
}
|
|
}
|
|
possibleDevices["bd"] = 0
|
|
return possibleDevices
|
|
}
|
|
|
|
func TestDeviceAllocatorError(t *testing.T) {
|
|
allocator := NewDeviceAllocator().(*deviceAllocator)
|
|
existingDevices := ExistingDevices{}
|
|
|
|
// make all devices used
|
|
var first, second byte
|
|
for first = 'b'; first <= 'c'; first++ {
|
|
for second = 'a'; second <= 'z'; second++ {
|
|
device := [2]byte{first, second}
|
|
existingDevices[mountDevice(device[:])] = "used"
|
|
}
|
|
}
|
|
|
|
device, err := allocator.GetNext(existingDevices)
|
|
if err == nil {
|
|
t.Errorf("expected error, got device %q", device)
|
|
}
|
|
}
|