83 lines
2.2 KiB
Go
83 lines
2.2 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 testutil
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import (
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"flag"
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"strconv"
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"testing"
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)
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var rootEnabled bool
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func init() {
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flag.BoolVar(&rootEnabled, "test.root", false, "enable tests that require root")
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}
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// DumpDir prints the contents of the directory to the testing logger.
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//
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// Use this in a defer statement from a test that may allocate and exercise a
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// temporary directory. Immensely useful for sanity checking and debugging
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// failing tests.
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//
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// One should still test that contents are as expected. This is only a visual
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// tool to assist when things don't go your way.
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func DumpDir(t *testing.T, root string) {
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if err := filepath.Walk(root, func(path string, fi os.FileInfo, err error) error {
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if err != nil {
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return err
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}
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if fi.Mode()&os.ModeSymlink != 0 {
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target, err := os.Readlink(path)
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if err != nil {
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return err
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}
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t.Log(fi.Mode(), fmt.Sprintf("%10s", ""), path, "->", target)
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} else if fi.Mode().IsRegular() {
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p, err := ioutil.ReadFile(path)
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if err != nil {
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t.Logf("error reading file: %v", err)
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return nil
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}
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if len(p) > 64 { // just display a little bit.
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p = p[:64]
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}
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t.Log(fi.Mode(), fmt.Sprintf("%10d", fi.Size()), path, "[", strconv.Quote(string(p)), "...]")
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} else {
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t.Log(fi.Mode(), fmt.Sprintf("%10d", fi.Size()), path)
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}
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return nil
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}); err != nil {
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t.Fatalf("error dumping directory: %v", err)
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}
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}
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// DumpDirOnFailure prints the contents of the directory to the testing logger if
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// the test has failed.
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func DumpDirOnFailure(t *testing.T, root string) {
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if t.Failed() {
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DumpDir(t, root)
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}
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}
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