143 lines
2.9 KiB
Go
143 lines
2.9 KiB
Go
package cache
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import (
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"context"
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"io/ioutil"
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"os"
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"path/filepath"
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"testing"
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"github.com/containerd/containerd/namespaces"
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"github.com/containerd/containerd/snapshot/naive"
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"github.com/pkg/errors"
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"github.com/stretchr/testify/assert"
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"github.com/tonistiigi/buildkit_poc/snapshot"
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)
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func TestManager(t *testing.T) {
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ctx := namespaces.WithNamespace(context.Background(), "buildkit-test")
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tmpdir, err := ioutil.TempDir("", "cachemanager")
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assert.NoError(t, err)
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defer os.RemoveAll(tmpdir)
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snapshotter, err := naive.NewSnapshotter(filepath.Join(tmpdir, "snapshots"))
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assert.NoError(t, err)
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cm, err := NewManager(ManagerOpt{
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Root: tmpdir,
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Snapshotter: snapshotter,
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})
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assert.NoError(t, err)
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_, err = cm.Get(ctx, "foobar")
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assert.Error(t, err)
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checkDiskUsage(t, ctx, cm, 0, 0)
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active, err := cm.New(ctx, nil)
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assert.NoError(t, err)
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m, err := active.Mount(ctx)
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assert.NoError(t, err)
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lm := snapshot.LocalMounter(m)
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target, err := lm.Mount()
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assert.NoError(t, err)
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fi, err := os.Stat(target)
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assert.NoError(t, err)
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assert.Equal(t, fi.IsDir(), true)
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err = lm.Unmount()
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assert.NoError(t, err)
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_, err = cm.GetMutable(ctx, active.ID())
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assert.Error(t, err)
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assert.Equal(t, errLocked, errors.Cause(err))
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checkDiskUsage(t, ctx, cm, 1, 0)
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snap, err := active.Freeze()
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assert.NoError(t, err)
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checkDiskUsage(t, ctx, cm, 1, 0)
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_, err = cm.GetMutable(ctx, active.ID())
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assert.Error(t, err)
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assert.Equal(t, errLocked, errors.Cause(err))
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err = snap.Release(ctx)
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assert.NoError(t, err)
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checkDiskUsage(t, ctx, cm, 0, 1)
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active, err = cm.GetMutable(ctx, active.ID())
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assert.NoError(t, err)
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checkDiskUsage(t, ctx, cm, 1, 0)
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snap, err = active.ReleaseAndCommit(ctx)
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assert.NoError(t, err)
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checkDiskUsage(t, ctx, cm, 1, 0)
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err = snap.Release(ctx)
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assert.NoError(t, err)
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_, err = cm.GetMutable(ctx, active.ID())
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assert.Error(t, err)
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assert.Equal(t, errNotFound, errors.Cause(err))
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_, err = cm.GetMutable(ctx, snap.ID())
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assert.Error(t, err)
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assert.Equal(t, errInvalid, errors.Cause(err))
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snap, err = cm.Get(ctx, snap.ID())
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assert.NoError(t, err)
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snap2, err := cm.Get(ctx, snap.ID())
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assert.NoError(t, err)
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checkDiskUsage(t, ctx, cm, 1, 0)
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err = snap.Release(ctx)
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assert.NoError(t, err)
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active2, err := cm.New(ctx, snap2)
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assert.NoError(t, err)
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checkDiskUsage(t, ctx, cm, 2, 0)
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snap3, err := active2.Freeze()
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assert.NoError(t, err)
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err = snap2.Release(ctx)
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assert.NoError(t, err)
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checkDiskUsage(t, ctx, cm, 2, 0)
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err = snap3.Release(ctx)
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assert.NoError(t, err)
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checkDiskUsage(t, ctx, cm, 0, 2)
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err = cm.Close()
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assert.NoError(t, err)
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}
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func checkDiskUsage(t *testing.T, ctx context.Context, cm Manager, inuse, unused int) {
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du, err := cm.DiskUsage(ctx)
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assert.NoError(t, err)
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var inuseActual, unusedActual int
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for _, r := range du {
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if r.InUse {
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inuseActual++
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} else {
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unusedActual++
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}
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}
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assert.Equal(t, inuse, inuseActual)
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assert.Equal(t, unused, unusedActual)
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}
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