sneak
b8c699adee
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fetch saves the manifest as index.mf at the top of the tree and refuses a manifest that lists a file there. gen given --output, and freshen with its manifest outside the base directory, listed such a file, so they wrote manifests fetch would not take. Both now leave out each file the manifest would list as index.mf: one at the top of the tree, or a file given to gen by that name. The rule goes by that path alone and looks up no file, so a symlink named index.mf never hides the file it points to. index.mf in a subdirectory is still listed. The scanner in package mfer gets an option to leave out files by the path they would be listed by. Model: opus-5-5
95 lines
3.0 KiB
Go
95 lines
3.0 KiB
Go
//go:build unix
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//nolint:testpackage // white-box tests exercise unexported internals
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package cli
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import (
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"os"
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"path/filepath"
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"syscall"
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"testing"
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"time"
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"github.com/spf13/afero"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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const (
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// testPipe is the name of the named pipe the pipe tests make in a tree.
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testPipe = "pipe"
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// pipeDeadline is how long a test lets a run go before it opens the
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// test's named pipes for writing.
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pipeDeadline = 5 * time.Second
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)
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// makePipe makes a named pipe at path. Opening a named pipe for reading
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// blocks until it is opened for writing, so once pipeDeadline has passed,
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// unless the test has ended, makePipe opens it for writing and closes it
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// again. A run that wrongly reads the pipe then ends, and the test fails on
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// what it reports instead of hanging. That lets one read through, so each
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// path a wrong run would read gets a pipe of its own.
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func makePipe(t *testing.T, path string) {
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t.Helper()
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require.NoError(t, syscall.Mkfifo(path, 0o600))
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timer := time.AfterFunc(pipeDeadline, func() {
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f, err := os.OpenFile(path, os.O_WRONLY, 0) //nolint:gosec // test-controlled path
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if err == nil {
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_ = f.Close()
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}
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})
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t.Cleanup(func() { timer.Stop() })
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}
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// TestGenerateSkipsPipe runs gen -v on a tree holding a named pipe: the
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// manifest lists the regular file only, and gen names the pipe it skipped.
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func TestGenerateSkipsPipe(t *testing.T) {
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t.Parallel()
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dir := t.TempDir()
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fs := afero.NewOsFs()
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writeTestFile(t, fs, filepath.Join(dir, testFileTxt), "regular")
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makePipe(t, filepath.Join(dir, testPipe))
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opts := testOpts([]string{testApp, cmdGenerate, "-v", dir}, fs)
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require.Equal(t, 0, runCLI(opts), "stderr: %s", testStderr(t, opts))
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assert.Equal(t, []string{testFileTxt},
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manifestPaths(t, fs, filepath.Join(dir, defaultManifestName)))
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assert.Contains(t, testStderr(t, opts), "skipping pipe: not a regular file")
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}
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// TestFreshenSkipsPipes adds a named pipe to a tree after gen made its
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// manifest, and a symlink to another pipe. freshen -v --follow-symlinks
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// leaves the manifest listing the regular file only, and names both entries
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// it skipped.
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func TestFreshenSkipsPipes(t *testing.T) {
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t.Parallel()
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fs := afero.NewOsFs()
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root, manifestPath := setupFreshenDir(t, fs,
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map[string]string{testFileTxt: "regular"})
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makePipe(t, filepath.Join(root, testPipe))
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// The symlink points outside the tree, so no pipe is read twice.
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target := filepath.Join(t.TempDir(), testPipe)
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makePipe(t, target)
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require.NoError(t, os.Symlink(target, filepath.Join(root, testLink)))
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opts := testOpts([]string{
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testApp, cmdFreshen, "-v", testFlagFollowSymlinks,
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testFlagBase, root, manifestPath,
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}, fs)
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require.Equal(t, 0, runCLI(opts), "stderr: %s", testStderr(t, opts))
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assert.Equal(t, []string{testFileTxt}, manifestPaths(t, fs, manifestPath))
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stderr := testStderr(t, opts)
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assert.Contains(t, stderr, "skipping pipe: not a regular file")
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assert.Contains(t, stderr, "skipping link: not a regular file")
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}
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