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epoch: fix unit test when SOURCE_DATE_EPOCH is set

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Fixes https://github.com/containerd/containerd/issues/8200

Signed-off-by: Samuel Karp <samuelkarp@google.com>
This commit is contained in:
Samuel Karp 2023-03-03 14:54:23 -08:00
parent 7a77da2c26
commit 8ce3e4e159
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GPG Key ID: 997C5A3CD3167CB5
2 changed files with 15 additions and 1 deletions
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2
pkg/epoch/epoch.go
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@ -34,7 +34,7 @@ const SourceDateEpochEnv = "SOURCE_DATE_EPOCH"
// If the env var is not set, SourceDateEpoch returns nil without an error.
func SourceDateEpoch() (*time.Time, error) {
v, ok := os.LookupEnv(SourceDateEpochEnv)
if !ok {
if !ok || v == "" {
return nil, nil // not an error
}
i64, err := strconv.ParseInt(v, 10, 64)

14
pkg/epoch/epoch_test.go
View File

@ -36,7 +36,9 @@ func rightAfter(t1, t2 time.Time) bool {
func TestSourceDateEpoch(t *testing.T) {
if s, ok := os.LookupEnv(SourceDateEpochEnv); ok {
t.Logf("%s is already set to %q, unsetting", SourceDateEpochEnv, s)
// see https://github.com/golang/go/issues/52817#issuecomment-1131339120
t.Setenv(SourceDateEpochEnv, "")
os.Unsetenv(SourceDateEpochEnv)
}
t.Run("WithoutSourceDateEpoch", func(t *testing.T) {
@ -49,6 +51,18 @@ func TestSourceDateEpoch(t *testing.T) {
require.True(t, rightAfter(now, v))
})
t.Run("WithEmptySourceDateEpoch", func(t *testing.T) {
t.Setenv(SourceDateEpochEnv, "")
vp, err := SourceDateEpoch()
require.NoError(t, err)
require.Nil(t, vp)
now := time.Now()
v := SourceDateEpochOrNow()
require.True(t, rightAfter(now, v))
})
t.Run("WithSourceDateEpoch", func(t *testing.T) {
sourceDateEpoch, err := time.Parse(time.RFC3339, "2022-01-23T12:34:56Z")
require.NoError(t, err)