sneak
c218fe56e9
- Atomic writes for mfer gen: writes to temp file, renames on success, cleans up temp on error/interrupt. Prevents empty manifests on Ctrl-C. - Humanized byte sizes using dustin/go-humanize (e.g., "10 MiB" not "10485760") - Progress lines clear when done (using ANSI escape \r\033[K]) - Debug logging when files are added to manifest (mfer gen -vv) - Move -v/-q flags from global to per-command for better UX - Add tests for atomic write behavior with failing filesystem mock
486 lines
17 KiB
Go
486 lines
17 KiB
Go
package cli
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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/spf13/afero"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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urfcli "github.com/urfave/cli/v2"
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"sneak.berlin/go/mfer/mfer"
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)
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func init() {
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// Prevent urfave/cli from calling os.Exit during tests
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urfcli.OsExiter = func(code int) {}
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}
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func TestBuild(t *testing.T) {
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m := &CLIApp{}
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assert.NotNil(t, m)
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}
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func testOpts(args []string, fs afero.Fs) *RunOptions {
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return &RunOptions{
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Appname: "mfer",
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Version: "1.0.0",
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Gitrev: "abc123",
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Args: args,
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Stdin: &bytes.Buffer{},
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Stdout: &bytes.Buffer{},
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Stderr: &bytes.Buffer{},
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Fs: fs,
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}
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}
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func TestVersionCommand(t *testing.T) {
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fs := afero.NewMemMapFs()
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opts := testOpts([]string{"mfer", "version"}, fs)
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exitCode := RunWithOptions(opts)
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assert.Equal(t, 0, exitCode)
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stdout := opts.Stdout.(*bytes.Buffer).String()
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assert.Contains(t, stdout, mfer.Version)
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assert.Contains(t, stdout, "abc123")
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}
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func TestHelpCommand(t *testing.T) {
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fs := afero.NewMemMapFs()
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opts := testOpts([]string{"mfer", "--help"}, fs)
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exitCode := RunWithOptions(opts)
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assert.Equal(t, 0, exitCode)
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stdout := opts.Stdout.(*bytes.Buffer).String()
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assert.Contains(t, stdout, "generate")
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assert.Contains(t, stdout, "check")
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assert.Contains(t, stdout, "fetch")
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}
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func TestGenerateCommand(t *testing.T) {
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fs := afero.NewMemMapFs()
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// Create test files in memory filesystem
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require.NoError(t, fs.MkdirAll("/testdir", 0755))
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require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("hello world"), 0644))
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require.NoError(t, afero.WriteFile(fs, "/testdir/file2.txt", []byte("test content"), 0644))
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opts := testOpts([]string{"mfer", "generate", "-q", "-o", "/testdir/test.mf", "/testdir"}, fs)
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exitCode := RunWithOptions(opts)
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assert.Equal(t, 0, exitCode, "stderr: %s", opts.Stderr.(*bytes.Buffer).String())
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// Verify manifest was created
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exists, err := afero.Exists(fs, "/testdir/test.mf")
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require.NoError(t, err)
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assert.True(t, exists)
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}
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func TestGenerateAndCheckCommand(t *testing.T) {
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fs := afero.NewMemMapFs()
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// Create test files with subdirectory
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require.NoError(t, fs.MkdirAll("/testdir/subdir", 0755))
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require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("hello world"), 0644))
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require.NoError(t, afero.WriteFile(fs, "/testdir/subdir/file2.txt", []byte("test content"), 0644))
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// Generate manifest
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opts := testOpts([]string{"mfer", "generate", "-q", "-o", "/testdir/test.mf", "/testdir"}, fs)
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exitCode := RunWithOptions(opts)
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require.Equal(t, 0, exitCode, "generate failed: %s", opts.Stderr.(*bytes.Buffer).String())
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// Check manifest
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opts = testOpts([]string{"mfer", "check", "-q", "--base", "/testdir", "/testdir/test.mf"}, fs)
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exitCode = RunWithOptions(opts)
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assert.Equal(t, 0, exitCode, "check failed: %s", opts.Stderr.(*bytes.Buffer).String())
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}
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func TestCheckCommandWithMissingFile(t *testing.T) {
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fs := afero.NewMemMapFs()
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// Create test file
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require.NoError(t, fs.MkdirAll("/testdir", 0755))
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require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("hello world"), 0644))
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// Generate manifest
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opts := testOpts([]string{"mfer", "generate", "-q", "-o", "/testdir/test.mf", "/testdir"}, fs)
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exitCode := RunWithOptions(opts)
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require.Equal(t, 0, exitCode, "generate failed: %s", opts.Stderr.(*bytes.Buffer).String())
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// Delete the file
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require.NoError(t, fs.Remove("/testdir/file1.txt"))
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// Check manifest - should fail
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opts = testOpts([]string{"mfer", "check", "-q", "--base", "/testdir", "/testdir/test.mf"}, fs)
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exitCode = RunWithOptions(opts)
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assert.Equal(t, 1, exitCode, "check should have failed for missing file")
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}
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func TestCheckCommandWithCorruptedFile(t *testing.T) {
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fs := afero.NewMemMapFs()
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// Create test file
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require.NoError(t, fs.MkdirAll("/testdir", 0755))
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require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("hello world"), 0644))
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// Generate manifest
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opts := testOpts([]string{"mfer", "generate", "-q", "-o", "/testdir/test.mf", "/testdir"}, fs)
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exitCode := RunWithOptions(opts)
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require.Equal(t, 0, exitCode, "generate failed: %s", opts.Stderr.(*bytes.Buffer).String())
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// Corrupt the file (change content but keep same size)
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require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("HELLO WORLD"), 0644))
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// Check manifest - should fail with hash mismatch
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opts = testOpts([]string{"mfer", "check", "-q", "--base", "/testdir", "/testdir/test.mf"}, fs)
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exitCode = RunWithOptions(opts)
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assert.Equal(t, 1, exitCode, "check should have failed for corrupted file")
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}
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func TestCheckCommandWithSizeMismatch(t *testing.T) {
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fs := afero.NewMemMapFs()
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// Create test file
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require.NoError(t, fs.MkdirAll("/testdir", 0755))
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require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("hello world"), 0644))
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// Generate manifest
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opts := testOpts([]string{"mfer", "generate", "-q", "-o", "/testdir/test.mf", "/testdir"}, fs)
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exitCode := RunWithOptions(opts)
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require.Equal(t, 0, exitCode, "generate failed: %s", opts.Stderr.(*bytes.Buffer).String())
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// Change file size
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require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("different size content here"), 0644))
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// Check manifest - should fail with size mismatch
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opts = testOpts([]string{"mfer", "check", "-q", "--base", "/testdir", "/testdir/test.mf"}, fs)
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exitCode = RunWithOptions(opts)
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assert.Equal(t, 1, exitCode, "check should have failed for size mismatch")
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}
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func TestBannerOutput(t *testing.T) {
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fs := afero.NewMemMapFs()
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// Create test file
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require.NoError(t, fs.MkdirAll("/testdir", 0755))
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require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("hello"), 0644))
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// Run without -q to see banner
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opts := testOpts([]string{"mfer", "generate", "-o", "/testdir/test.mf", "/testdir"}, fs)
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exitCode := RunWithOptions(opts)
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assert.Equal(t, 0, exitCode)
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// Banner ASCII art should be in stdout
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stdout := opts.Stdout.(*bytes.Buffer).String()
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assert.Contains(t, stdout, "___")
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assert.Contains(t, stdout, "\\")
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}
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func TestUnknownCommand(t *testing.T) {
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fs := afero.NewMemMapFs()
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opts := testOpts([]string{"mfer", "unknown"}, fs)
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exitCode := RunWithOptions(opts)
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assert.Equal(t, 1, exitCode)
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}
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func TestGenerateExcludesDotfilesByDefault(t *testing.T) {
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fs := afero.NewMemMapFs()
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// Create test files including dotfiles
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require.NoError(t, fs.MkdirAll("/testdir", 0755))
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require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("hello"), 0644))
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require.NoError(t, afero.WriteFile(fs, "/testdir/.hidden", []byte("secret"), 0644))
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// Generate manifest without --include-dotfiles (default excludes dotfiles)
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opts := testOpts([]string{"mfer", "generate", "-q", "-o", "/testdir/test.mf", "/testdir"}, fs)
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exitCode := RunWithOptions(opts)
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require.Equal(t, 0, exitCode)
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// Check that manifest exists
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exists, _ := afero.Exists(fs, "/testdir/test.mf")
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assert.True(t, exists)
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// Verify manifest only has 1 file (the non-dotfile)
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manifest, err := mfer.NewManifestFromFile(fs, "/testdir/test.mf")
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require.NoError(t, err)
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assert.Len(t, manifest.Files(), 1)
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assert.Equal(t, "file1.txt", manifest.Files()[0].Path)
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}
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func TestGenerateWithIncludeDotfiles(t *testing.T) {
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fs := afero.NewMemMapFs()
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// Create test files including dotfiles
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require.NoError(t, fs.MkdirAll("/testdir", 0755))
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require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("hello"), 0644))
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require.NoError(t, afero.WriteFile(fs, "/testdir/.hidden", []byte("secret"), 0644))
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// Generate manifest with --include-dotfiles
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opts := testOpts([]string{"mfer", "generate", "-q", "--include-dotfiles", "-o", "/testdir/test.mf", "/testdir"}, fs)
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exitCode := RunWithOptions(opts)
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require.Equal(t, 0, exitCode)
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// Verify manifest has 2 files (including dotfile)
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manifest, err := mfer.NewManifestFromFile(fs, "/testdir/test.mf")
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require.NoError(t, err)
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assert.Len(t, manifest.Files(), 2)
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}
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func TestMultipleInputPaths(t *testing.T) {
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fs := afero.NewMemMapFs()
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// Create test files in multiple directories
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require.NoError(t, fs.MkdirAll("/dir1", 0755))
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require.NoError(t, fs.MkdirAll("/dir2", 0755))
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require.NoError(t, afero.WriteFile(fs, "/dir1/file1.txt", []byte("content1"), 0644))
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require.NoError(t, afero.WriteFile(fs, "/dir2/file2.txt", []byte("content2"), 0644))
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// Generate manifest from multiple paths
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opts := testOpts([]string{"mfer", "generate", "-q", "-o", "/output.mf", "/dir1", "/dir2"}, fs)
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exitCode := RunWithOptions(opts)
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assert.Equal(t, 0, exitCode, "stderr: %s", opts.Stderr.(*bytes.Buffer).String())
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exists, _ := afero.Exists(fs, "/output.mf")
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assert.True(t, exists)
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}
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func TestNoExtraFilesPass(t *testing.T) {
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fs := afero.NewMemMapFs()
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// Create test files
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require.NoError(t, fs.MkdirAll("/testdir", 0755))
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require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("hello"), 0644))
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require.NoError(t, afero.WriteFile(fs, "/testdir/file2.txt", []byte("world"), 0644))
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// Generate manifest
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opts := testOpts([]string{"mfer", "generate", "-q", "-o", "/manifest.mf", "/testdir"}, fs)
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exitCode := RunWithOptions(opts)
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require.Equal(t, 0, exitCode)
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// Check with --no-extra-files (should pass - no extra files)
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opts = testOpts([]string{"mfer", "check", "-q", "--no-extra-files", "--base", "/testdir", "/manifest.mf"}, fs)
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exitCode = RunWithOptions(opts)
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assert.Equal(t, 0, exitCode)
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}
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func TestNoExtraFilesFail(t *testing.T) {
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fs := afero.NewMemMapFs()
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// Create test files
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require.NoError(t, fs.MkdirAll("/testdir", 0755))
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require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("hello"), 0644))
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// Generate manifest
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opts := testOpts([]string{"mfer", "generate", "-q", "-o", "/manifest.mf", "/testdir"}, fs)
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exitCode := RunWithOptions(opts)
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require.Equal(t, 0, exitCode)
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// Add an extra file after manifest generation
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require.NoError(t, afero.WriteFile(fs, "/testdir/extra.txt", []byte("extra"), 0644))
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// Check with --no-extra-files (should fail - extra file exists)
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opts = testOpts([]string{"mfer", "check", "-q", "--no-extra-files", "--base", "/testdir", "/manifest.mf"}, fs)
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exitCode = RunWithOptions(opts)
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assert.Equal(t, 1, exitCode, "check should fail when extra files exist")
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}
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func TestNoExtraFilesWithSubdirectory(t *testing.T) {
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fs := afero.NewMemMapFs()
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// Create test files with subdirectory
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require.NoError(t, fs.MkdirAll("/testdir/subdir", 0755))
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require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("hello"), 0644))
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require.NoError(t, afero.WriteFile(fs, "/testdir/subdir/file2.txt", []byte("world"), 0644))
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// Generate manifest
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opts := testOpts([]string{"mfer", "generate", "-q", "-o", "/manifest.mf", "/testdir"}, fs)
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exitCode := RunWithOptions(opts)
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require.Equal(t, 0, exitCode)
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// Add extra file in subdirectory
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require.NoError(t, afero.WriteFile(fs, "/testdir/subdir/extra.txt", []byte("extra"), 0644))
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// Check with --no-extra-files (should fail)
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opts = testOpts([]string{"mfer", "check", "-q", "--no-extra-files", "--base", "/testdir", "/manifest.mf"}, fs)
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exitCode = RunWithOptions(opts)
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assert.Equal(t, 1, exitCode, "check should fail when extra files exist in subdirectory")
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}
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func TestCheckWithoutNoExtraFilesIgnoresExtra(t *testing.T) {
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fs := afero.NewMemMapFs()
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// Create test file
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require.NoError(t, fs.MkdirAll("/testdir", 0755))
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require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("hello"), 0644))
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// Generate manifest
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opts := testOpts([]string{"mfer", "generate", "-q", "-o", "/manifest.mf", "/testdir"}, fs)
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exitCode := RunWithOptions(opts)
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require.Equal(t, 0, exitCode)
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// Add extra file
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require.NoError(t, afero.WriteFile(fs, "/testdir/extra.txt", []byte("extra"), 0644))
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// Check WITHOUT --no-extra-files (should pass - extra files ignored)
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opts = testOpts([]string{"mfer", "check", "-q", "--base", "/testdir", "/manifest.mf"}, fs)
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exitCode = RunWithOptions(opts)
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assert.Equal(t, 0, exitCode, "check without --no-extra-files should ignore extra files")
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}
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func TestGenerateAtomicWriteNoTempFileOnSuccess(t *testing.T) {
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fs := afero.NewMemMapFs()
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// Create test file
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require.NoError(t, fs.MkdirAll("/testdir", 0755))
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require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("hello"), 0644))
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// Generate manifest
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opts := testOpts([]string{"mfer", "generate", "-q", "-o", "/output.mf", "/testdir"}, fs)
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exitCode := RunWithOptions(opts)
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require.Equal(t, 0, exitCode)
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// Verify output file exists
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exists, err := afero.Exists(fs, "/output.mf")
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require.NoError(t, err)
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assert.True(t, exists, "output file should exist")
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// Verify temp file does NOT exist
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tmpExists, err := afero.Exists(fs, "/output.mf.tmp")
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require.NoError(t, err)
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assert.False(t, tmpExists, "temp file should not exist after successful generation")
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}
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func TestGenerateAtomicWriteOverwriteWithForce(t *testing.T) {
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fs := afero.NewMemMapFs()
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// Create test file
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require.NoError(t, fs.MkdirAll("/testdir", 0755))
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require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("hello"), 0644))
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// Create existing manifest with different content
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require.NoError(t, afero.WriteFile(fs, "/output.mf", []byte("old content"), 0644))
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// Generate manifest with --force
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opts := testOpts([]string{"mfer", "generate", "-q", "-f", "-o", "/output.mf", "/testdir"}, fs)
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exitCode := RunWithOptions(opts)
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require.Equal(t, 0, exitCode)
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// Verify output file exists and was overwritten
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content, err := afero.ReadFile(fs, "/output.mf")
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require.NoError(t, err)
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assert.NotEqual(t, "old content", string(content), "manifest should be overwritten")
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// Verify temp file does NOT exist
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tmpExists, err := afero.Exists(fs, "/output.mf.tmp")
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require.NoError(t, err)
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assert.False(t, tmpExists, "temp file should not exist after successful generation")
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}
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func TestGenerateFailsWithoutForceWhenOutputExists(t *testing.T) {
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fs := afero.NewMemMapFs()
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// Create test file
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require.NoError(t, fs.MkdirAll("/testdir", 0755))
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require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("hello"), 0644))
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// Create existing manifest
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require.NoError(t, afero.WriteFile(fs, "/output.mf", []byte("existing"), 0644))
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// Generate manifest WITHOUT --force (should fail)
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opts := testOpts([]string{"mfer", "generate", "-q", "-o", "/output.mf", "/testdir"}, fs)
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exitCode := RunWithOptions(opts)
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assert.Equal(t, 1, exitCode, "should fail when output exists without --force")
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// Verify original content is preserved
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content, err := afero.ReadFile(fs, "/output.mf")
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require.NoError(t, err)
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assert.Equal(t, "existing", string(content), "original file should be preserved")
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}
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func TestGenerateAtomicWriteUsesTemp(t *testing.T) {
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// This test verifies that generate uses a temp file by checking
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// that the output file doesn't exist until generation completes.
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// We do this by generating to a path and verifying the temp file
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// pattern is used (output.mf.tmp -> output.mf)
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fs := afero.NewMemMapFs()
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// Create test file
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require.NoError(t, fs.MkdirAll("/testdir", 0755))
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require.NoError(t, afero.WriteFile(fs, "/testdir/file1.txt", []byte("hello"), 0644))
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// Generate manifest
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opts := testOpts([]string{"mfer", "generate", "-q", "-o", "/output.mf", "/testdir"}, fs)
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exitCode := RunWithOptions(opts)
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require.Equal(t, 0, exitCode)
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|
// Both output file should exist and temp should not
|
|
exists, _ := afero.Exists(fs, "/output.mf")
|
|
assert.True(t, exists, "output file should exist")
|
|
|
|
tmpExists, _ := afero.Exists(fs, "/output.mf.tmp")
|
|
assert.False(t, tmpExists, "temp file should be cleaned up")
|
|
|
|
// Verify manifest is valid (not empty)
|
|
content, err := afero.ReadFile(fs, "/output.mf")
|
|
require.NoError(t, err)
|
|
assert.True(t, len(content) > 0, "manifest should not be empty")
|
|
}
|
|
|
|
// failingWriterFs wraps a filesystem and makes writes fail after N bytes
|
|
type failingWriterFs struct {
|
|
afero.Fs
|
|
failAfter int64
|
|
written int64
|
|
}
|
|
|
|
type failingFile struct {
|
|
afero.File
|
|
fs *failingWriterFs
|
|
}
|
|
|
|
func (f *failingFile) Write(p []byte) (int, error) {
|
|
f.fs.written += int64(len(p))
|
|
if f.fs.written > f.fs.failAfter {
|
|
return 0, fmt.Errorf("simulated write failure")
|
|
}
|
|
return f.File.Write(p)
|
|
}
|
|
|
|
func (fs *failingWriterFs) Create(name string) (afero.File, error) {
|
|
f, err := fs.Fs.Create(name)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &failingFile{File: f, fs: fs}, nil
|
|
}
|
|
|
|
func TestGenerateAtomicWriteCleansUpOnError(t *testing.T) {
|
|
baseFs := afero.NewMemMapFs()
|
|
|
|
// Create test files - need enough content to trigger the write failure
|
|
require.NoError(t, baseFs.MkdirAll("/testdir", 0755))
|
|
require.NoError(t, afero.WriteFile(baseFs, "/testdir/file1.txt", []byte("hello world this is a test file"), 0644))
|
|
|
|
// Wrap with failing writer that fails after writing some bytes
|
|
fs := &failingWriterFs{Fs: baseFs, failAfter: 10}
|
|
|
|
// Generate manifest - should fail during write
|
|
opts := testOpts([]string{"mfer", "generate", "-q", "-o", "/output.mf", "/testdir"}, fs)
|
|
exitCode := RunWithOptions(opts)
|
|
assert.Equal(t, 1, exitCode, "should fail due to write error")
|
|
|
|
// With atomic writes: output.mf should NOT exist (temp was cleaned up)
|
|
// With non-atomic writes: output.mf WOULD exist (partial/empty)
|
|
exists, _ := afero.Exists(baseFs, "/output.mf")
|
|
assert.False(t, exists, "output file should not exist after failed generation (atomic write)")
|
|
|
|
// Temp file should also not exist
|
|
tmpExists, _ := afero.Exists(baseFs, "/output.mf.tmp")
|
|
assert.False(t, tmpExists, "temp file should be cleaned up after failed generation")
|
|
}
|