Function TestCleanupOldSweepsOrphanedTempFiles

internal/update/update_test.go:456–487

TestCleanupOldSweepsOrphanedTempFiles: a Ctrl+C mid-download kills the process before Apply's deferred Remove runs (no signal handler exists that early), stranding a multi-MB .codehamr-update-* partial; each retry uses a fresh random suffix, so only a launch-time sweep ever deletes them. Only STALE

(t *testing.T)

// STALE temps are swept: a fresh one may be another instance's live download.
// The running binary and unrelated files must survive.
func TestCleanupOldSweepsOrphanedTempFiles(t *testing.T) {
	tmpDir := t.TempDir()
	exec := filepath.Join(tmpDir, "codehamr")
	unrelated := filepath.Join(tmpDir, "notes.txt")
	live := filepath.Join(tmpDir, ".codehamr-update-live")
	orphans := []string{
		filepath.Join(tmpDir, ".codehamr-update-1111"),
		filepath.Join(tmpDir, ".codehamr-update-2222"),
	}
	for _, p := range append([]string{exec, unrelated, live}, orphans...) {
		if err := os.WriteFile(p, []byte("x"), 0o755); err != nil {
			t.Fatal(err)
		}
	}
	stale := time.Now().Add(-2 * orphanSweepAge)
	for _, p := range orphans {
		if err := os.Chtimes(p, stale, stale); err != nil {
			t.Fatal(err)
		}
	}
	CleanupOld(exec)
	for _, p := range orphans {
		if _, err := os.Stat(p); !os.IsNotExist(err) {
			t.Fatalf("stale orphan %s must be swept, stat err: %v", p, err)
		}
	}
	for _, p := range []string{exec, unrelated, live} {
		if _, err := os.Stat(p); err != nil {
			t.Fatalf("%s must survive the sweep: %v", p, err)
		}
	}
}

// TestApplyRespectsContextCancel: a cancelled ctx aborts the download and
// the local exec stays untouched.