f2edc6f164
full diff: https://github.com/gotestyourself/gotest.tools/compare/v2.3.0...v3.0.2 Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
125 lines
3.2 KiB
Go
125 lines
3.2 KiB
Go
// +build linux
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/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package losetup
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import (
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"io/ioutil"
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"os"
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"testing"
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"github.com/docker/go-units"
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"golang.org/x/sys/unix"
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"gotest.tools/v3/assert"
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is "gotest.tools/v3/assert/cmp"
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"github.com/containerd/containerd/pkg/testutil"
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)
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func TestLosetup(t *testing.T) {
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testutil.RequiresRoot(t)
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var (
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imagePath = createSparseImage(t)
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loopDevice1 string
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loopDevice2 string
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)
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defer func() {
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err := os.Remove(imagePath)
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assert.NilError(t, err)
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}()
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t.Run("AttachLoopDevice", func(t *testing.T) {
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dev1, err := AttachLoopDevice(imagePath)
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assert.NilError(t, err)
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assert.Assert(t, dev1 != "")
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dev2, err := AttachLoopDevice(imagePath)
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assert.NilError(t, err)
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assert.Assert(t, dev2 != dev1, "should attach different loop device")
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loopDevice1 = dev1
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loopDevice2 = dev2
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})
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t.Run("AttachEmptyLoopDevice", func(t *testing.T) {
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_, err := AttachLoopDevice("")
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assert.Assert(t, err != nil, "shouldn't attach empty path")
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})
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t.Run("FindAssociatedLoopDevices", func(t *testing.T) {
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devices, err := FindAssociatedLoopDevices(imagePath)
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assert.NilError(t, err)
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assert.Assert(t, is.Len(devices, 2), "unexpected number of attached devices")
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assert.Assert(t, is.Contains(devices, loopDevice1))
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assert.Assert(t, is.Contains(devices, loopDevice2))
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})
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t.Run("FindAssociatedLoopDevicesForInvalidImage", func(t *testing.T) {
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devices, err := FindAssociatedLoopDevices("")
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assert.NilError(t, err)
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assert.Assert(t, is.Len(devices, 0))
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})
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t.Run("DetachLoopDevice", func(t *testing.T) {
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err := DetachLoopDevice(loopDevice2)
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assert.NilError(t, err, "failed to detach %q", loopDevice2)
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})
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t.Run("DetachEmptyDevice", func(t *testing.T) {
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err := DetachLoopDevice("")
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assert.Assert(t, err != nil, "shouldn't detach empty path")
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})
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t.Run("RemoveLoopDevicesAssociatedWithImage", func(t *testing.T) {
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err := RemoveLoopDevicesAssociatedWithImage(imagePath)
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assert.NilError(t, err)
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devices, err := FindAssociatedLoopDevices(imagePath)
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assert.NilError(t, err)
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assert.Assert(t, is.Len(devices, 0))
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})
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t.Run("RemoveLoopDevicesAssociatedWithInvalidImage", func(t *testing.T) {
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err := RemoveLoopDevicesAssociatedWithImage("")
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assert.NilError(t, err)
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})
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t.Run("DetachInvalidDevice", func(t *testing.T) {
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err := DetachLoopDevice("/dev/loop_invalid_idx")
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assert.Equal(t, unix.ENOENT, err)
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})
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}
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func createSparseImage(t *testing.T) string {
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file, err := ioutil.TempFile("", "losetup-tests-")
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assert.NilError(t, err)
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size, err := units.RAMInBytes("16Mb")
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assert.NilError(t, err)
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err = file.Truncate(size)
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assert.NilError(t, err)
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err = file.Close()
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assert.NilError(t, err)
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return file.Name()
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}
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