cephfs admin: add in a test for canceling clones

This test is added after we add force delete functions as deleting a
canceled clone requires a force remove function.

Signed-off-by: John Mulligan <jmulligan@redhat.com>

cephfs/admin/clone_test.go

@@ -143,3 +143,66 @@ func TestCloneSubVolumeSnapshot(t *testing.T) {
 		time.Sleep(5 * time.Millisecond)
 	}
 }
+
+func TestCancelClone(t *testing.T) {
+	fsa := getFSAdmin(t)
+	volume := "cephfs"
+	group := "Park"
+	subname := "Jurrasic"
+	snapname := "dinodna0"
+	clonename := "babydino2"
+
+	err := fsa.CreateSubVolumeGroup(volume, group, nil)
+	assert.NoError(t, err)
+	defer func() {
+		err := fsa.RemoveSubVolumeGroup(volume, group)
+		assert.NoError(t, err)
+	}()
+
+	svopts := &SubVolumeOptions{
+		Mode: 0750,
+		Size: 20 * gibiByte,
+	}
+	err = fsa.CreateSubVolume(volume, group, subname, svopts)
+	assert.NoError(t, err)
+	defer func() {
+		err := fsa.RemoveSubVolume(volume, group, subname)
+		assert.NoError(t, err)
+	}()
+
+	err = fsa.CreateSubVolumeSnapshot(volume, group, subname, snapname)
+	assert.NoError(t, err)
+	defer func() {
+		err := fsa.RemoveSubVolumeSnapshot(volume, group, subname, snapname)
+		assert.NoError(t, err)
+	}()
+
+	err = fsa.CloneSubVolumeSnapshot(
+		volume, group, subname, snapname, clonename,
+		&CloneOptions{TargetGroup: group})
+	var x NotProtectedError
+	if errors.As(err, &x) {
+		err = fsa.ProtectSubVolumeSnapshot(volume, group, subname, snapname)
+		assert.NoError(t, err)
+		defer func() {
+			err := fsa.UnprotectSubVolumeSnapshot(volume, group, subname, snapname)
+			assert.NoError(t, err)
+		}()
+
+		err = fsa.CloneSubVolumeSnapshot(
+			volume, group, subname, snapname, clonename,
+			&CloneOptions{TargetGroup: group})
+	}
+	assert.NoError(t, err)
+	defer func() {
+		err := fsa.ForceRemoveSubVolume(volume, group, clonename)
+		assert.NoError(t, err)
+	}()
+
+	// we can't guarantee that this clone is can be canceled here, especially
+	// if the clone happens fast on the ceph server side, but I have not yet
+	// seen an instance where it fails. If it happens we can adjust the test as
+	// needed.
+	err = fsa.CancelClone(volume, group, clonename)
+	assert.NoError(t, err)
+}