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Rewrite the mount resource to fix at least one existing issue #744

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Rewrite the mount resource to fix at least one existing issue #744

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b2f4dfd
engine: resources: Rewrite MountRes to rely on systemd units over fstab
ffrank Mar 6, 2024
db8c973
test: shell: Add a stub test for mount, and some clean-up
ffrank Mar 6, 2024
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572 changes: 173 additions & 399 deletions engine/resources/mount.go
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87 changes: 0 additions & 87 deletions engine/resources/mount_linux_test.go
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268 changes: 1 addition & 267 deletions engine/resources/mount_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -32,275 +32,9 @@
package resources

import (
"os"
"testing"

fstab "github.com/deniswernert/go-fstab"
)

const fstabMock1 = `UUID=ef5726f2-615c-4350-b0ab-f106e5fc90ad / ext4 defaults 1 1` + "\n"

var fstabWriteTests = []struct {
in fstab.Mounts
}{
{
fstab.Mounts{
&fstab.Mount{
Spec: "UUID=00112233-4455-6677-8899-aabbccddeeff",
File: "/boot",
VfsType: "ext3",
MntOps: map[string]string{"defaults": ""},
Freq: 1,
PassNo: 2,
},
&fstab.Mount{
Spec: "/dev/mapper/home",
File: "/home",
VfsType: "ext3",
MntOps: map[string]string{"defaults": ""},
Freq: 1,
PassNo: 2,
},
},
},
{
fstab.Mounts{
&fstab.Mount{
Spec: "/dev/cdrom",
File: "/mnt/cdrom",
VfsType: "iso9660",
MntOps: map[string]string{"ro": "", "blocksize": "2048"},
},
},
},
}

func (obj *MountRes) TestFstabWrite(t *testing.T) {
file, err := os.CreateTemp("", "fstab")
if err != nil {
t.Errorf("error creating temp file: %v", err)
return
}
defer os.Remove(file.Name())

for _, test := range fstabWriteTests {
if err := obj.fstabWrite(file.Name(), test.in); err != nil {
t.Errorf("error writing fstab file: %s: %v", file.Name(), err)
return
}
for _, mount := range test.in {
exists, err := fstabEntryExists(file.Name(), mount)
if err != nil {
t.Errorf("error checking if fstab entry %s exists: %v", mount.String(), err)
return
}
if !exists {
t.Errorf("failed to write %s to fstab", mount.String())
}
}
}
}

var fstabEntryAddTests = []struct {
fstabMock []byte
in *fstab.Mount
}{
{
[]byte(fstabMock1),
&fstab.Mount{
Spec: "/dev/sdb1",
File: "/mnt/foo",
VfsType: "ext2",
MntOps: map[string]string{"ro": "", "blocksize": "2048"},
},
},
{
[]byte(fstabMock1),
&fstab.Mount{
Spec: "UUID=00112233-4455-6677-8899-aabbccddeeff",
File: "/",
VfsType: "ext3",
MntOps: map[string]string{"defaults": ""},
Freq: 1,
PassNo: 2,
},
},
}

func (obj *MountRes) TestFstabEntryAdd(t *testing.T) {
file, err := os.CreateTemp("", "fstab")
if err != nil {
t.Errorf("error creating temp file: %v", err)
return
}
defer os.Remove(file.Name())

for _, test := range fstabEntryAddTests {
if err := os.WriteFile(file.Name(), test.fstabMock, 0644); err != nil {
t.Errorf("error writing fstab file: %s: %v", file.Name(), err)
return
}
err := obj.fstabEntryAdd(file.Name(), test.in)
if err != nil {
t.Errorf("error adding fstab entry: %s to file: %s: %v", test.in.String(), file.Name(), err)
return
}
exists, err := fstabEntryExists(file.Name(), test.in)
if err != nil {
t.Errorf("error checking if %s exists: %v", test.in.String(), err)
return
}
if !exists {
t.Errorf("fstab failed to add entry: %s to fstab", test.in.String())
}
}
}

var fstabEntryRemoveTests = []struct {
fstabMock []byte
in *fstab.Mount
}{
{
[]byte(fstabMock1),
&fstab.Mount{
Spec: "UUID=ef5726f2-615c-4350-b0ab-f106e5fc90ad",
File: "/",
VfsType: "ext4",
MntOps: map[string]string{"defaults": ""},
Freq: 1,
PassNo: 1,
},
},
}

func (obj *MountRes) TestFstabEntryRemove(t *testing.T) {
file, err := os.CreateTemp("", "fstab")
if err != nil {
t.Errorf("error creating temp file: %v", err)
return
}
defer os.Remove(file.Name())

for _, test := range fstabEntryRemoveTests {
if err := os.WriteFile(file.Name(), test.fstabMock, 0644); err != nil {
t.Errorf("error writing fstab file: %s: %v", file.Name(), err)
return
}
err := obj.fstabEntryRemove(file.Name(), test.in)
if err != nil {
t.Errorf("error removing fstab entry: %s from file: %s: %v", test.in.String(), file.Name(), err)
return
}
exists, err := fstabEntryExists(file.Name(), test.in)
if err != nil {
t.Errorf("error checking if %s exists: %v", test.in.String(), err)
return
}
if exists {
t.Errorf("fstab failed to remove entry: %s from fstab", test.in.String())
}
}
}

var mountCompareTests = []struct {
dIn *fstab.Mount
pIn *fstab.Mount
out bool
}{
{
&fstab.Mount{
Spec: "/dev/foo",
File: "/mnt/foo",
VfsType: "ext3",
MntOps: map[string]string{"defaults": ""},
},
&fstab.Mount{
Spec: "/dev/foo",
File: "/mnt/foo",
VfsType: "ext3",
MntOps: map[string]string{"foo": "bar", "baz": ""},
},
true,
},
{
&fstab.Mount{
Spec: "UUID=00112233-4455-6677-8899-aabbccddeeff",
File: "/mnt/foo",
VfsType: "ext3",
},
&fstab.Mount{
Spec: "UUID=00112233-4455-6677-8899-aabbccddeeff",
File: "/mnt/bar",
VfsType: "ext3",
},
false,
},
}

var fstabEntryExistsTests = []struct {
fstabMock []byte
in *fstab.Mount
out bool
}{
{
[]byte(fstabMock1),
&fstab.Mount{
Spec: "UUID=ef5726f2-615c-4350-b0ab-f106e5fc90ad",
File: "/",
VfsType: "ext4",
MntOps: map[string]string{"defaults": ""},
Freq: 1,
PassNo: 1,
},
true,
},
{
[]byte(fstabMock1),
&fstab.Mount{
Spec: "/dev/mapper/root",
File: "/home",
VfsType: "ext4",
MntOps: map[string]string{"defaults": ""},
Freq: 1,
PassNo: 1,
},
false,
},
}

func TestFstabEntryExists(t *testing.T) {
file, err := os.CreateTemp("", "fstab")
if err != nil {
t.Errorf("error creating temp file: %v", err)
return
}
defer os.Remove(file.Name())

for _, test := range fstabEntryExistsTests {
if err := os.WriteFile(file.Name(), test.fstabMock, 0644); err != nil {
t.Errorf("error writing fstab file: %s: %v", file.Name(), err)
return
}
result, err := fstabEntryExists(file.Name(), test.in)
if err != nil {
t.Errorf("error checking if fstab entry %s exists: %v", test.in.String(), err)
return
}
if result != test.out {
t.Errorf("fstabEntryExists test wanted: %t, got: %t", test.out, result)
}
}
}
func TestMountResource(t *testing.T) {

func TestMountCompare(t *testing.T) {
for _, test := range mountCompareTests {
result, err := mountCompare(test.dIn, test.pIn)
if err != nil {
t.Errorf("error comparing mounts: %s and %s: %v", test.dIn.String(), test.pIn.String(), err)
return
}
if result != test.out {
t.Errorf("mountCompare test wanted: %t, got: %t", test.out, result)
}
}
}