TestCopyUnreadableSource verifies that Copy returns an error when the source file cannot be opened (e.g., permission denied).
(t *testing.T)
| 104 | // TestCopyUnreadableSource verifies that Copy returns an error when the source |
| 105 | // file cannot be opened (e.g., permission denied). |
| 106 | func TestCopyUnreadableSource(t *testing.T) { |
| 107 | if runtime.GOOS == "windows" { |
| 108 | t.Skip("chmod does not restrict reads on Windows") |
| 109 | } |
| 110 | |
| 111 | src, err := os.CreateTemp("", "copy-test-unreadable-*") |
| 112 | if err != nil { |
| 113 | t.Fatalf("failed to create temp file: %v", err) |
| 114 | } |
| 115 | defer os.Remove(src.Name()) |
| 116 | |
| 117 | if _, err := src.WriteString("test content"); err != nil { |
| 118 | t.Fatalf("failed to write content: %v", err) |
| 119 | } |
| 120 | src.Close() |
| 121 | |
| 122 | sheet := &Sheet{ |
| 123 | Title: "test", |
| 124 | Path: src.Name(), |
| 125 | CheatPath: "test", |
| 126 | } |
| 127 | |
| 128 | dest := filepath.Join(os.TempDir(), "copy-unreadable-test.txt") |
| 129 | defer os.Remove(dest) |
| 130 | |
| 131 | if err := os.Chmod(src.Name(), 0000); err != nil { |
| 132 | t.Skip("Cannot change file permissions on this platform") |
| 133 | } |
| 134 | defer os.Chmod(src.Name(), 0644) |
| 135 | |
| 136 | err = sheet.Copy(dest) |
| 137 | if err == nil { |
| 138 | t.Error("expected Copy to fail with permission error") |
| 139 | } |
| 140 | |
| 141 | // Destination should not exist since the error occurs before it is created |
| 142 | if _, err := os.Stat(dest); !os.IsNotExist(err) { |
| 143 | t.Error("destination file should not exist after open failure") |
| 144 | } |
| 145 | } |