distribution/digest/tarsum_test.go

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package digest
import (
"reflect"
"testing"
)
func TestParseTarSumComponents(t *testing.T) {
for _, testcase := range []struct {
input string
expected TarSumInfo
err error
}{
{
input: "tarsum.v1+sha256:220a60ecd4a3c32c282622a625a54db9ba0ff55b5ba9c29c7064a2bc358b6a3e",
expected: TarSumInfo{
Version: "v1",
Algorithm: "sha256",
Digest: "220a60ecd4a3c32c282622a625a54db9ba0ff55b5ba9c29c7064a2bc358b6a3e",
},
},
{
input: "",
err: InvalidTarSumError(""),
},
{
input: "purejunk",
err: InvalidTarSumError("purejunk"),
},
{
input: "tarsum.v23+test:12341234123412341effefefe",
expected: TarSumInfo{
Version: "v23",
Algorithm: "test",
Digest: "12341234123412341effefefe",
},
},
// The following test cases are ported from docker core
{
// Version 0 tarsum
input: "tarsum+sha256:e58fcf7418d4390dec8e8fb69d88c06ec07039d651fedd3aa72af9972e7d046b",
expected: TarSumInfo{
Algorithm: "sha256",
Digest: "e58fcf7418d4390dec8e8fb69d88c06ec07039d651fedd3aa72af9972e7d046b",
},
},
{
// Dev version tarsum
input: "tarsum.dev+sha256:e58fcf7418d4390dec8e8fb69d88c06ec07039d651fedd3aa72af9972e7d046b",
expected: TarSumInfo{
Version: "dev",
Algorithm: "sha256",
Digest: "e58fcf7418d4390dec8e8fb69d88c06ec07039d651fedd3aa72af9972e7d046b",
},
},
} {
tsi, err := ParseTarSum(testcase.input)
if err != nil {
if testcase.err != nil && err == testcase.err {
continue // passes
}
t.Fatalf("unexpected error parsing tarsum: %v", err)
}
if testcase.err != nil {
t.Fatalf("expected error not encountered on %q: %v", testcase.input, testcase.err)
}
if !reflect.DeepEqual(tsi, testcase.expected) {
t.Fatalf("expected tarsum info: %v != %v", tsi, testcase.expected)
}
if testcase.input != tsi.String() {
t.Fatalf("input should equal output: %q != %q", tsi.String(), testcase.input)
}
}
}