[test] Directory Operations for MINIX File System

[ppenna]

Description

We should provide the following tests for directory operations in a MINIX file system.

API Tests

• [x] Add / Remove a Directory Entry (e1a70020cf1e8611cc675b90211a79163c2f94d4)
• [x] Search or a Directory Entry (e1a70020cf1e8611cc675b90211a79163c2f94d4)

Fault Injection Tests

• [x] Add an Invalid Directory Entry (e1a70020cf1e8611cc675b90211a79163c2f94d4)
• [x] Remove an Invalid Directory Entry (e1a70020cf1e8611cc675b90211a79163c2f94d4)
• [x] Search for an Invalid Directory Entry (e1a70020cf1e8611cc675b90211a79163c2f94d4)
• [x] Add a Bad Directory Entry (e1a70020cf1e8611cc675b90211a79163c2f94d4)
• [x] Remove a Bad Directory Entry (e1a70020cf1e8611cc675b90211a79163c2f94d4)
• [x] Search for a Bad Directory Entry (e1a70020cf1e8611cc675b90211a79163c2f94d4)

Stress Tests

• [ ] Add / Remove Many Entries to/from a Directory
• [ ] Search for Several Entries in a Directory