test: add test for different volume sources

the volumes of container have four different sources(volumes-from,
binds, images and Config.Volume). If two volumes have the same destination,
only one volume is reserved. The order is
volumes-from > binds > images > Config.Volume

Signed-off-by: Eric Li <[email protected]>

test/cli_run_volume_test.go

@@ -1,10 +1,12 @@
 package main
 
 import (
+	"encoding/json"
 	"fmt"
 	"runtime"
 	"strings"
 
+	"github.com/alibaba/pouch/apis/types"
 	"github.com/alibaba/pouch/test/command"
 	"github.com/alibaba/pouch/test/environment"
 
@@ -170,6 +172,53 @@ func (suite *PouchRunVolumeSuite) TestRunWithVolumesFromWithDupclicate(c *check.
 	c.Assert(volumeFound, check.Equals, true)
 }
 
+func (suite *PouchRunVolumeSuite) TestRunWithVolumesFromDifferentSources(c *check.C) {
+	imageWithVolume := "registry.hub.docker.com/shaloulcy/busybox:with-volume"
+	containerName1 := "TestRunWithVolumesFromImage"
+	containerName2 := "TestRunWithVolumesFromContainerAndImage"
+
+	// pull the image with volume
+	command.PouchRun("pull", imageWithVolume).Assert(c, icmd.Success)
+
+	// start the container1 which has volume from image,
+	// and the volume destination is /data
+	command.PouchRun("run", "-d", "-t",
+		"--name", containerName1, imageWithVolume, "top").Assert(c, icmd.Success)
+
+	out1 := command.PouchRun("inspect", containerName1).Assert(c, icmd.Success)
+	container1 := []types.ContainerJSON{}
+	if err := json.Unmarshal([]byte(out1.Stdout()), &container1); err != nil {
+		c.Errorf("failed to decode inspect output: %v", err)
+	}
+
+	c.Assert(len(container1[0].Mounts), check.Equals, 1)
+	volumeName1 := container1[0].Mounts[0].Name
+
+	// start the container2 which has volumes from container1,
+	// and has an extra volume whose desctination is /data
+	command.PouchRun("run", "-d", "-t",
+		"-v", "/data", "--volumes-from", containerName1,
+		"--name", containerName2, imageWithVolume, "top").Assert(c, icmd.Success)
+
+	out2 := command.PouchRun("inspect", containerName2).Assert(c, icmd.Success)
+	container2 := []types.ContainerJSON{}
+	if err := json.Unmarshal([]byte(out2.Stdout()), &container2); err != nil {
+		c.Errorf("failed to decode inspect output: %v", err)
+	}
+
+	c.Assert(len(container2[0].Mounts), check.Equals, 1)
+	volumeName2 := container2[0].Mounts[0].Name
+
+	// assert the volume
+	c.Assert(volumeName1, check.Equals, volumeName2)
+
+	// clean up
+	DelContainerForceMultyTime(c, containerName1)
+	DelContainerForceMultyTime(c, containerName2)
+	RemoveVolume(c, volumeName1)
+	command.PouchRun("rmi", "-f", imageWithVolume).Assert(c, icmd.Success)
+}
+
 // TestRunWithDiskQuotaRegular tests running container with --disk-quota.
 func (suite *PouchRunVolumeSuite) TestRunWithDiskQuotaRegular(c *check.C) {
 	if !environment.IsDiskQuota() {