87 lines
2.1 KiB
Go
87 lines
2.1 KiB
Go
package snapshot
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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"strings"
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"testing"
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"github.com/docker/containerd"
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)
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func TestBtrfs(t *testing.T) {
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// SORRY(stevvooe): This is where I mount a btrfs loopback. We can probably
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// set this up as part of the test.
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root, err := ioutil.TempDir("/tmp/snapshots", "TestBtrfsPrepare-")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(root)
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// TODO(stevvooe): Cleanup subvolumes
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sm, err := NewBtrfs("/dev/loop0", root)
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if err != nil {
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t.Fatal(err)
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}
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mounts, err := sm.Prepare(filepath.Join(root, "test"), "")
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if err != nil {
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t.Fatal(err)
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}
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t.Log(mounts)
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for _, mount := range mounts {
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if mount.Type != "btrfs" {
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t.Fatal("wrong mount type: %v != btrfs", mount.Type)
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}
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// assumes the first, maybe incorrect in the future
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if !strings.HasPrefix(mount.Options[0], "subvolid=") {
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t.Fatal("no subvolid option in %v", mount.Options)
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}
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}
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if err := os.MkdirAll(mounts[0].Target, 0755); err != nil {
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t.Fatal(err)
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}
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if err := containerd.MountAll(mounts...); err != nil {
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t.Fatal(err)
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}
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// write in some data
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if err := ioutil.WriteFile(filepath.Join(mounts[0].Target, "foo"), []byte("content"), 0777); err != nil {
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t.Fatal(err)
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}
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// TODO(stevvooe): We don't really make this with the driver, but that
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// might prove annoying in practice.
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if err := os.MkdirAll(filepath.Join(root, "snapshots"), 0755); err != nil {
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t.Fatal(err)
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}
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if err := sm.Commit(filepath.Join(root, "snapshots/committed"), filepath.Join(root, "test")); err != nil {
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t.Fatal(err)
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}
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mounts, err = sm.Prepare(filepath.Join(root, "test2"), filepath.Join(root, "snapshots/committed"))
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if err != nil {
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t.Fatal(err)
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}
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if err := os.MkdirAll(filepath.Join(root, "test2"), 0755); err != nil {
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t.Fatal(err)
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}
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if err := containerd.MountAll(mounts...); err != nil {
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t.Fatal(err)
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}
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// TODO(stevvooe): Verify contents of "foo"
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if err := ioutil.WriteFile(filepath.Join(mounts[0].Target, "bar"), []byte("content"), 0777); err != nil {
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t.Fatal(err)
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}
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if err := sm.Commit(filepath.Join(root, "snapshots/committed2"), filepath.Join(root, "test2")); err != nil {
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t.Fatal(err)
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}
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}
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