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tests: Fix units tests to check empty-dir volumes backed by host-dir

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Test verify that k8s volumes that are mounted as tmpfs are considered as
ephemeral.

Signed-off-by: Archana Shinde <archana.m.shinde@intel.com>
This commit is contained in:
Archana Shinde 2019-03-14 18:09:18 -07:00
parent 47a6023382
commit 8e2a5eaa36
2 changed files with 38 additions and 2 deletions
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21
pkg/katautils/create_test.go
View File

@ -16,6 +16,7 @@ import (
"path"
"path/filepath"
"strings"
"syscall"
"testing"
vc "github.com/kata-containers/runtime/virtcontainers"
@ -177,12 +178,30 @@ func findLastParam(key string, params []vc.Param) (string, error) {
}
func TestSetEphemeralStorageType(t *testing.T) {
if os.Geteuid() != 0 {
t.Skip(testDisabledNeedRoot)
}
assert := assert.New(t)
dir, err := ioutil.TempDir(testDir, "foo")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
ephePath := filepath.Join(dir, k8sEmptyDir, "tmp-volume")
err = os.MkdirAll(ephePath, testDirMode)
assert.Nil(err)
err = syscall.Mount("tmpfs", ephePath, "tmpfs", 0, "")
assert.Nil(err)
defer syscall.Unmount(ephePath, 0)
ociSpec := oci.CompatOCISpec{}
var ociMounts []specs.Mount
mount := specs.Mount{
Source: "/var/lib/kubelet/pods/366c3a77-4869-11e8-b479-507b9ddd5ce4/volumes/kubernetes.io~empty-dir/cache-volume",
Source: ephePath,
}
ociMounts = append(ociMounts, mount)

19
pkg/katautils/utils_test.go
View File

@ -368,7 +368,24 @@ func TestGetFileContents(t *testing.T) {
}
func TestIsEphemeralStorage(t *testing.T) {
sampleEphePath := "/var/lib/kubelet/pods/366c3a75-4869-11e8-b479-507b9ddd5ce4/volumes/kubernetes.io~empty-dir/cache-volume"
if os.Geteuid() != 0 {
t.Skip(testDisabledNeedRoot)
}
dir, err := ioutil.TempDir(testDir, "foo")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
sampleEphePath := filepath.Join(dir, k8sEmptyDir, "tmp-volume")
err = os.MkdirAll(sampleEphePath, testDirMode)
assert.Nil(t, err)
err = syscall.Mount("tmpfs", sampleEphePath, "tmpfs", 0, "")
assert.Nil(t, err)
defer syscall.Unmount(sampleEphePath, 0)
isEphe := IsEphemeralStorage(sampleEphePath)
if !isEphe {
t.Fatalf("Unable to correctly determine volume type")