| 1 | package testenv |
| 2 | |
| 3 | import ( |
| 4 | "os" |
| 5 | "path/filepath" |
| 6 | "strings" |
| 7 | "testing" |
| 8 | ) |
| 9 | |
| 10 | func TestIsolateUserStateRedirectsAndRestoresCallerEnvironment(t *testing.T) { |
| 11 | callerHome := t.TempDir() |
| 12 | callerEnvironment := map[string]string{ |
| 13 | "HOME": callerHome, |
| 14 | "USERPROFILE": callerHome, |
| 15 | "XDG_CONFIG_HOME": filepath.Join(callerHome, "caller-config"), |
| 16 | "XDG_CACHE_HOME": filepath.Join(callerHome, "caller-xdg-cache"), |
| 17 | "XDG_STATE_HOME": filepath.Join(callerHome, "caller-xdg-state"), |
| 18 | "AppData": filepath.Join(callerHome, "caller-appdata"), |
| 19 | "LocalAppData": filepath.Join(callerHome, "caller-local-appdata"), |
| 20 | "REASONIX_HOME": filepath.Join(callerHome, "explicit-reasonix-home"), |
| 21 | "REASONIX_STATE_HOME": filepath.Join(callerHome, "caller-state"), |
| 22 | "REASONIX_CACHE_HOME": filepath.Join(callerHome, "caller-cache"), |
| 23 | } |
| 24 | for key, value := range callerEnvironment { |
| 25 | t.Setenv(key, value) |
| 26 | } |
| 27 | |
| 28 | cleanup, err := IsolateUserState() |
| 29 | if err != nil { |
| 30 | t.Fatal(err) |
| 31 | } |
| 32 | t.Cleanup(cleanup) |
| 33 | isolateHome := os.Getenv("HOME") |
| 34 | if isolateHome == "" || isolateHome == callerHome { |
| 35 | t.Fatalf("HOME = %q, want a disposable home distinct from caller %q", isolateHome, callerHome) |
| 36 | } |
| 37 | if rel, err := filepath.Rel(callerHome, isolateHome); err != nil || filepath.IsAbs(rel) || rel == ".." || strings.HasPrefix(rel, ".."+string(os.PathSeparator)) { |
| 38 | t.Fatalf("isolated home %q is not contained by caller home %q", isolateHome, callerHome) |
| 39 | } |
| 40 | wantIsolatedEnvironment := map[string]string{ |
| 41 | "HOME": isolateHome, |
| 42 | "USERPROFILE": isolateHome, |
| 43 | "XDG_CONFIG_HOME": filepath.Join(isolateHome, ".config"), |
| 44 | "XDG_CACHE_HOME": filepath.Join(isolateHome, ".cache"), |
| 45 | "XDG_STATE_HOME": filepath.Join(isolateHome, ".local", "state"), |
| 46 | "AppData": filepath.Join(isolateHome, "AppData", "Roaming"), |
| 47 | "LocalAppData": filepath.Join(isolateHome, "AppData", "Local"), |
| 48 | } |
| 49 | for key, want := range wantIsolatedEnvironment { |
| 50 | if got := os.Getenv(key); got != want { |
| 51 | t.Errorf("%s inside isolated test process = %q, want %q", key, got, want) |
| 52 | } |
| 53 | } |
| 54 | for _, key := range []string{"REASONIX_HOME", "REASONIX_STATE_HOME", "REASONIX_CACHE_HOME"} { |
| 55 | if _, ok := os.LookupEnv(key); ok { |
| 56 | t.Fatalf("%s remained set inside isolated test process", key) |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | cleanup() |
| 61 | for key, want := range callerEnvironment { |
| 62 | if got := os.Getenv(key); got != want { |
| 63 | t.Errorf("%s after cleanup = %q, want %q", key, got, want) |
| 64 | } |
| 65 | } |
| 66 | if _, err := os.Stat(isolateHome); !os.IsNotExist(err) { |
| 67 | t.Fatalf("isolated home still exists after cleanup: %v", err) |
| 68 | } |
| 69 | } |
| 70 |