mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-28 15:03:23 +00:00
104 lines
2.2 KiB
Go
104 lines
2.2 KiB
Go
/*
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# Copyright (c) 2021, NVIDIA CORPORATION. All rights reserved.
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#
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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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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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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 oci
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import (
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"bytes"
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"fmt"
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"testing"
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"github.com/opencontainers/runtime-spec/specs-go"
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"github.com/stretchr/testify/require"
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)
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func TestLoadFrom(t *testing.T) {
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testCases := []struct {
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contents []byte
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isError bool
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spec *specs.Spec
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}{
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{
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contents: []byte{},
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isError: true,
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},
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{
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contents: []byte("{}"),
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isError: false,
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spec: &specs.Spec{},
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},
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}
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for i, tc := range testCases {
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var spec *specs.Spec
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spec, err := LoadFrom(bytes.NewReader(tc.contents))
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if tc.isError {
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require.Error(t, err, "%d: %v", i, tc)
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} else {
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require.NoError(t, err, "%d: %v", i, tc)
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}
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if tc.spec == nil {
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require.Nil(t, spec, "%d: %v", i, tc)
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} else {
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require.EqualValues(t, tc.spec, spec, "%d: %v", i, tc)
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}
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}
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}
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func TestFlushTo(t *testing.T) {
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testCases := []struct {
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isError bool
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spec *specs.Spec
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contents string
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}{
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{
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spec: nil,
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},
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{
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spec: &specs.Spec{},
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contents: "{\"ociVersion\":\"\"}\n",
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},
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}
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for i, tc := range testCases {
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buffer := bytes.Buffer{}
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err := flushTo(tc.spec, &buffer)
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if tc.isError {
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require.Error(t, err, "%d: %v", i, tc)
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} else {
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require.NoError(t, err, "%d: %v", i, tc)
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}
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require.EqualValues(t, tc.contents, buffer.String(), "%d: %v", i, tc)
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}
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// Add a simple test for a writer that returns an error when writing
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err := flushTo(&specs.Spec{}, errorWriter{})
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require.Error(t, err)
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}
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// errorWriter implements the io.Writer interface, always returning an error when
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// writing.
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type errorWriter struct{}
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func (e errorWriter) Write([]byte) (int, error) {
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return 0, fmt.Errorf("error writing")
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}
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