88 lines
2.4 KiB
Go
88 lines
2.4 KiB
Go
/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package continuity
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import (
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"fmt"
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"reflect"
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"testing"
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"github.com/opencontainers/go-digest"
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)
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// TestUniqifyDigests ensures that we deterministically sort digest entries
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// for a resource.
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func TestUniqifyDigests(t *testing.T) {
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for _, testcase := range []struct {
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description string
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input [][]digest.Digest // input is a series of digest collections from separate resources.
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expected []digest.Digest
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err error
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}{
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{
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description: "simple merge",
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input: [][]digest.Digest{
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{"sha1:abc", "sha256:def"},
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{"sha1:abc", "sha256:def"},
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},
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expected: []digest.Digest{"sha1:abc", "sha256:def"},
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},
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{
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description: "simple reversed order",
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input: [][]digest.Digest{
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{"sha1:abc", "sha256:def"},
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{"sha256:def", "sha1:abc"},
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},
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expected: []digest.Digest{"sha1:abc", "sha256:def"},
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},
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{
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description: "conflicting values for sha1",
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input: [][]digest.Digest{
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{"sha1:abc", "sha256:def"},
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{"sha256:def", "sha1:def"},
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},
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err: fmt.Errorf("conflicting digests for sha1 found"),
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},
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} {
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fatalf := func(format string, args ...interface{}) {
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t.Fatalf(testcase.description+": "+format, args...)
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}
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var assembled []digest.Digest
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for _, ds := range testcase.input {
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assembled = append(assembled, ds...)
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}
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merged, err := uniqifyDigests(assembled...)
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if err != testcase.err {
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if testcase.err == nil {
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fatalf("unexpected error uniqifying digests: %v", err)
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}
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if err != testcase.err && err.Error() != testcase.err.Error() {
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// compare by string till we create nice error type
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fatalf("unexpected error uniqifying digests: %v != %v", err, testcase.err)
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}
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}
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if !reflect.DeepEqual(merged, testcase.expected) {
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fatalf("unexpected uniquification: %v != %v", merged, testcase.expected)
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}
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}
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}
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