Keep braces in TEST_CASE arguments when finding tests

[r3wretrhy]

🍍

Problem

find_tests splits the scrubbed source into logical lines at every ;, { and }. Braces inside string and character literals are hidden before the split, but braces in the TEST_CASE argument list itself are not. A compound literal therefore ends the logical line in the middle of the TEST_CASE:

TEST_CASE((uint8_t[]){0x1, 0x2, 0x3}, 3)
void test_with_array(const uint8_t * data, unsigned len)

The test is found without its arguments, so the runner registers it as a plain void (void) test:

run_test_params_arr[0].func = test_with_array;

GCC 14 rejects that with -Wincompatible-pointer-types. With a compiler that only warns, the test is called without its arguments.

Fix

Hide ;, {, } and / inside the parentheses of TEST_CASE/TEST_RANGE/TEST_MATRIX with the same markers that are already used for literals, so they are restored after the split. The parenthesised list is matched with a recursive group, so nested parentheses such as (uint8_t[]) are kept.

The example above now generates runner_args1_test_with_array() calling test_with_array((uint8_t[]){0x1, 0x2, 0x3}, 3);.

Fixes #752

Verification

• New FindTestsKeepsBracesInTestCaseArguments in test_generate_test_runner.rb: fails on master (args is nil), passes with the change.
• New test_CompoundLiteralArgsArePreserved in test_unity_parameterized.c: on master, rake test:unit stops with the incompatible-pointer-types error above (GCC 14.2); with the change both cases run and pass.
• rake test:scripts, test:unit, test:fixture, test:memory, test:summary and test:make pass on Linux (Ruby 3.3, GCC 14.2). test:style was not run because rubocop and astyle are not installed here.