Restructure project layout and clean up test suite

Move sources to src/, header to inc/, and tests to tests/src/.
Update Makefiles and .gitignore for the new layout.

Refactor test harness: add crash-wrapper macros (_S_CRASH,
_S_CRASH_I, _S_CRASH_V, _S_CRASH_BUF) replacing 58 hand-written
wrappers, add shared _s_test_int_range helper eliminating duplicate
_s_test_func, add _S_RAND_ITERS constant, move srand() to main()
in all test binaries, and add Doxygen comments to test_utils.h.

1 files changed, 14 insertions, 0 deletions

diff --git a/tests/src/test_case.c b/tests/src/test_case.c
new file mode 100644
index 0000000..920dc95
--- /dev/null
+++ b/tests/src/test_case.c
@@ -0,0 +1,14 @@
+#include "libft.h"
+#include "test_utils.h"
+#include <ctype.h>
+
+int
+main (void)
+{
+  _s_section ("ft_toupper");
+  _s_test_int_range ("ft_toupper", ft_toupper, toupper, 0);
+  _s_section ("ft_tolower");
+  _s_test_int_range ("ft_tolower", ft_tolower, tolower, 0);
+  _s_print_results ();
+  return (_s_fail != 0);
+}