resource/lvm/fs/fs_test.go
// Copyright © 2016 Asteris, LLC
//
// 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 fs_test
import (
"github.com/asteris-llc/converge/helpers/comparison"
"github.com/asteris-llc/converge/helpers/fakerenderer"
"github.com/asteris-llc/converge/resource"
"github.com/asteris-llc/converge/resource/lvm/fs"
"github.com/asteris-llc/converge/resource/lvm/lowlevel"
"github.com/asteris-llc/converge/resource/lvm/sampledata"
"github.com/asteris-llc/converge/resource/lvm/testhelpers"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/mock"
"github.com/stretchr/testify/require"
"golang.org/x/net/context"
"fmt"
"testing"
)
// TestFSCheck tests Check() from filesystem resource
func TestFSCheck(t *testing.T) {
t.Run("normal flow", func(t *testing.T) {
lvm, m := testhelpers.MakeFakeLvm()
setupNormalFlowCheck(m, "xfs", true, true)
status, _ := simpleCheckSuccess(t, lvm)
assert.True(t, status.HasChanges())
})
t.Run("missing tools failure", func(t *testing.T) {
lvm, m := testhelpers.MakeFakeLvm()
m.On("CheckFilesystemTools", mock.Anything).Return(fmt.Errorf("failure"))
_ = simpleCheckFailure(t, lvm)
m.AssertCalled(t, "CheckFilesystemTools", "xfs")
})
t.Run("Blkid() failure", func(t *testing.T) {
lvm, m := testhelpers.MakeFakeLvm()
m.On("CheckFilesystemTools", mock.Anything).Return(nil)
m.On("Blkid", mock.Anything).Return("", fmt.Errorf("failure"))
_ = simpleCheckFailure(t, lvm)
m.AssertCalled(t, "Blkid", "/dev/mapper/vg0-data")
})
t.Run("Blkid() report, that filesystem already formatted with different fs", func(t *testing.T) {
lvm, m := testhelpers.MakeFakeLvm()
m.On("CheckFilesystemTools", mock.Anything).Return(nil)
m.On("Blkid", mock.Anything).Return("ext4", nil)
_ = simpleCheckFailure(t, lvm)
m.AssertCalled(t, "Blkid", "/dev/mapper/vg0-data")
})
t.Run("CheckUnit() failure", func(t *testing.T) {
lvm, m := testhelpers.MakeFakeLvm()
m.On("CheckFilesystemTools", mock.Anything).Return(nil)
m.On("Blkid", mock.Anything).Return("xfs", nil)
m.On("CheckUnit", "/etc/systemd/system/mnt-data.mount", mock.Anything).Return(false, fmt.Errorf("failure"))
_ = simpleCheckFailure(t, lvm)
m.AssertCalled(t, "CheckUnit", "/etc/systemd/system/mnt-data.mount", mock.Anything)
})
t.Run("Mountpoint failure", func(t *testing.T) {
lvm, m := testhelpers.MakeFakeLvm()
m.On("CheckFilesystemTools", mock.Anything).Return(nil)
m.On("Blkid", mock.Anything).Return("xfs", nil)
m.On("CheckUnit", "/etc/systemd/system/mnt-data.mount", mock.Anything).Return(false, nil)
m.On("Mountpoint", "/mnt/data").Return(false, fmt.Errorf("failure"))
_ = simpleCheckFailure(t, lvm)
m.AssertCalled(t, "Mountpoint", "/mnt/data")
})
t.Run("do nothing (no changes)", func(t *testing.T) {
lvm, m := testhelpers.MakeFakeLvm()
setupNormalFlowCheck(m, "xfs", false, true) // "xfs", no unit diffs, mount is mounted
status, _ := simpleCheckSuccess(t, lvm)
assert.False(t, status.HasChanges())
})
}
// TestFSApply tests Apply() from filesystem resource
func TestFSApply(t *testing.T) {
t.Run("normal flow", func(t *testing.T) {
lvm, m := testhelpers.MakeFakeLvm()
setupNormalFlowApply(m, "", true, true)
_ = simpleApplySuccess(t, lvm)
m.AssertCalled(t, "Mkfs", "/dev/mapper/vg0-data", "xfs")
m.AssertCalled(t, "UpdateUnit", "/etc/systemd/system/mnt-data.mount", mock.Anything)
m.AssertCalled(t, "StartUnit", "mnt-data.mount")
})
t.Run("no mkfs, only unit update and mount", func(t *testing.T) {
lvm, m := testhelpers.MakeFakeLvm()
setupNormalFlowApply(m, "xfs", true, false) // "xfs", no unit diffs, mount is NOT mounted
_ = simpleApplySuccess(t, lvm)
m.AssertNotCalled(t, "Mkfs", "/dev/mapper/vg0-data", "xfs")
m.AssertCalled(t, "UpdateUnit", "/etc/systemd/system/mnt-data.mount", mock.Anything)
// start unit is cascade action after UpdateUnit
m.AssertCalled(t, "StartUnit", "mnt-data.mount")
})
t.Run("no mkfs, no unit, only mount", func(t *testing.T) {
lvm, m := testhelpers.MakeFakeLvm()
setupNormalFlowApply(m, "xfs", false, false)
_ = simpleApplySuccess(t, lvm)
m.AssertNotCalled(t, "Mkfs", "/dev/mapper/vg0-data", "xfs")
m.AssertNotCalled(t, "UpdateUnit", "/etc/systemd/system/mnt-data.mount", mock.Anything)
m.AssertCalled(t, "StartUnit", "mnt-data.mount")
})
t.Run("Mkfs() failure", func(t *testing.T) {
lvm, m := testhelpers.MakeFakeLvm()
setupNormalFlowCheck(m, "", false, false)
m.On("Mkfs", mock.Anything, mock.Anything).Return(fmt.Errorf("failure"))
_ = simpleApplyFailure(t, lvm)
m.AssertCalled(t, "Mkfs", "/dev/mapper/vg0-data", "xfs")
})
t.Run("UpdateUnit() failure", func(t *testing.T) {
lvm, m := testhelpers.MakeFakeLvm()
setupNormalFlowCheck(m, "", true, true)
m.On("Mkfs", mock.Anything, mock.Anything).Return(nil)
m.On("UpdateUnit", mock.Anything, mock.Anything).Return(fmt.Errorf("failure"))
_ = simpleApplyFailure(t, lvm)
m.AssertCalled(t, "UpdateUnit", "/etc/systemd/system/mnt-data.mount", mock.Anything)
})
t.Run("StartUnit() failure", func(t *testing.T) {
lvm, m := testhelpers.MakeFakeLvm()
setupNormalFlowCheck(m, "", true, true)
m.On("Mkfs", mock.Anything, mock.Anything).Return(nil)
m.On("UpdateUnit", mock.Anything, mock.Anything).Return(nil)
m.On("StartUnit", mock.Anything).Return(fmt.Errorf("failure"))
_ = simpleApplyFailure(t, lvm)
m.AssertCalled(t, "StartUnit", "mnt-data.mount")
})
}
// TestCreateFilesystem is a full-blown test, using fake execution engine, to look
// which commands should be executed from given node.
//
// It covers only basic case, for detailed testing, tests with mock-LVM should be used
func TestCreateFilesystem(t *testing.T) {
lvm, me := testhelpers.MakeLvmWithMockExec()
me.LvsFirstCall = true
me.On("Getuid").Return(0)
me.On("Lookup", "mkfs.xfs").Return(nil)
me.On("Read", "pvs", mock.Anything).Return(sampledata.Pvs, nil)
me.On("Read", "vgs", mock.Anything).Return(sampledata.Vgs, nil)
me.On("Read", "lvs", mock.Anything).Return(sampledata.Lvs, nil)
me.On("ReadWithExitCode", "blkid", []string{"-c", "/dev/null", "-o", "value", "-s", "TYPE", "/dev/mapper/vg0-data"}).Return("", 0, nil)
me.On("ReadFile", "/etc/systemd/system/mnt-data.mount").Return([]byte(""), nil)
me.On("WriteFile", "/etc/systemd/system/mnt-data.mount", mock.Anything, mock.Anything).Return(nil)
me.On("Exists", "/dev/mapper/vg0-data").Return(true, nil)
me.On("Run", "mkfs", []string{"-t", "xfs", "/dev/mapper/vg0-data"}).Return(nil)
me.On("RunWithExitCode", "mountpoint", []string{"-q", "/mnt/data"}).Return(1, nil)
me.On("Run", "systemctl", []string{"daemon-reload"}).Return(nil)
me.On("Run", "systemctl", []string{"start", "mnt-data.mount"}).Return(nil)
fr := fakerenderer.New()
mount := defaultMount()
r, e := fs.NewResourceFS(lvm, mount)
require.NoError(t, e)
status, err := r.Check(context.Background(), fr)
require.NoError(t, err)
assert.True(t, status.HasChanges())
comparison.AssertDiff(t, status.Diffs(), "format", "<unformatted>", "xfs")
// Only basic actions checked here
status, err = r.Apply(context.Background())
require.NoError(t, err)
me.AssertCalled(t, "Run", "mkfs", []string{"-t", "xfs", "/dev/mapper/vg0-data"})
me.AssertCalled(t, "Run", "systemctl", []string{"start", "mnt-data.mount"})
}
func defaultMount() *fs.Mount {
mount := &fs.Mount{
What: "/dev/mapper/vg0-data",
Where: "/mnt/data",
Type: "xfs",
}
return mount
}
func simpleCheckSuccess(t *testing.T, lvm lowlevel.LVM) (resource.TaskStatus, resource.Task) {
fr := fakerenderer.New()
res, e := fs.NewResourceFS(lvm, defaultMount())
require.NoError(t, e)
status, err := res.Check(context.Background(), fr)
assert.NoError(t, err)
assert.NotNil(t, status)
return status, res
}
func simpleCheckFailure(t *testing.T, lvm lowlevel.LVM) resource.TaskStatus {
fr := fakerenderer.New()
res, e := fs.NewResourceFS(lvm, defaultMount())
require.NoError(t, e)
status, err := res.Check(context.Background(), fr)
assert.Error(t, err)
assert.Nil(t, status)
return status
}
func simpleApplySuccess(t *testing.T, lvm lowlevel.LVM) resource.TaskStatus {
checkStatus, res := simpleCheckSuccess(t, lvm)
require.True(t, checkStatus.HasChanges())
status, err := res.Apply(context.Background())
assert.NoError(t, err)
assert.NotNil(t, status)
return status
}
func simpleApplyFailure(t *testing.T, lvm lowlevel.LVM) resource.TaskStatus {
checkStatus, res := simpleCheckSuccess(t, lvm)
require.True(t, checkStatus.HasChanges())
status, err := res.Apply(context.Background())
assert.Error(t, err)
assert.Nil(t, status)
return status
}
func setupNormalFlowCheck(m *testhelpers.FakeLVM, blkid string, triggerUnit bool, triggerMountpoint bool) {
m.On("CheckFilesystemTools", mock.Anything).Return(nil) // pretend that we compat with any FS
m.On("Blkid", mock.Anything).Return(blkid, nil)
m.On("CheckUnit", mock.Anything, mock.Anything).Return(triggerUnit, nil)
m.On("Mountpoint", mock.Anything).Return(triggerMountpoint, nil)
}
func setupNormalFlowApply(m *testhelpers.FakeLVM, blkid string, triggerUnit bool, triggerMountpoint bool) {
setupNormalFlowCheck(m, blkid, triggerUnit, triggerMountpoint)
m.On("Mkfs", mock.Anything, mock.Anything).Return(nil)
m.On("UpdateUnit", mock.Anything, mock.Anything).Return(nil)
m.On("StartUnit", mock.Anything).Return(nil)
}