mptest

Small, modular unit-testing library written in C89.

Features:

• Fault checking (mock support)
  • Simulates OOM (out-of-memory) errors out-of-the-box by using a custom malloc()
  • Versatile enough to adapt for simulating other types of faults (I/O errors, thread initialization errors, etc.)
• Memory leak checking support
  • Tracks heap usage at exit and displays remaining allocations
  • Remembers allocation history (tracks memory across calls to realloc())
• Custom data-type S-expression support:
  • Allows easy creation of test example data through typed s-expressions
  • Example (taken from re):

    (ast
    (concat (
      (rune 'q')
      (alt (
        (rune 'a')
        (rune 'b')
        (rune 'c')
        (rune 'd'))))))

• Fuzzing support
  • Run tests with (optionally deterministic) random parameters
  • Run tests multiple times with different parameters
• Only ~6300 lines of code as of Jan 2023