Add test for rollback to release with external file

Signed-off-by: itaispiegel <itai.spiegel@gmail.com>

pkg/action/rollback_test.go

@@ -0,0 +1,63 @@
+/*
+Copyright The Helm Authors.
+
+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 action
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func rollbackAction(t *testing.T) *Rollback {
+	config := actionConfigFixture(t)
+	rollbackAction := NewRollback(config)
+
+	return rollbackAction
+}
+
+func TestRollbackToReleaseWithExternalFile(t *testing.T) {
+	is := assert.New(t)
+	vals := map[string]interface{}{}
+
+	chartVersion1 := buildChart(withExternalFileTemplate(ExternalFileRelPath))
+	chartVersion2 := buildChart()
+
+	instAction := installAction(t)
+	instAction.ExternalPaths = append(instAction.ExternalPaths, ExternalFileRelPath)
+	relVersion1, err := instAction.Run(chartVersion1, vals)
+	is.Contains(relVersion1.Manifest, "out-of-chart-dir")
+	is.NoError(err)
+
+	upAction := upgradeAction(t)
+	err = upAction.cfg.Releases.Create(relVersion1)
+	is.NoError(err)
+	relVersion2, err := upAction.Run(relVersion1.Name, chartVersion2, vals)
+	is.NotContains(relVersion2.Manifest, "out-out-chart-dir")
+	is.NoError(err)
+
+	rollAction := rollbackAction(t)
+	err = rollAction.cfg.Releases.Create(relVersion1)
+	is.NoError(err)
+	err = rollAction.cfg.Releases.Create(relVersion2)
+	is.NoError(err)
+	currentRelease, targetRelease, err := rollAction.prepareRollback(relVersion2.Name)
+	is.NoError(err)
+	relVersion3, err := rollAction.performRollback(currentRelease, targetRelease)
+	is.NoError(err)
+
+	is.Contains(relVersion3.Manifest, "out-of-chart-dir")
+}