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, 20 insertions, 0 deletions

diff --git a/tests/src/test_is.c b/tests/src/test_is.c
new file mode 100644
index 0000000..c0edfa8
--- /dev/null
+++ b/tests/src/test_is.c
@@ -0,0 +1,20 @@
+#include "libft.h"
+#include "test_utils.h"
+#include <ctype.h>
+
+int
+main (void)
+{
+  _s_section ("ft_isalpha");
+  _s_test_int_range ("ft_isalpha", ft_isalpha, isalpha, 1);
+  _s_section ("ft_isdigit");
+  _s_test_int_range ("ft_isdigit", ft_isdigit, isdigit, 1);
+  _s_section ("ft_isalnum");
+  _s_test_int_range ("ft_isalnum", ft_isalnum, isalnum, 1);
+  _s_section ("ft_isascii");
+  _s_test_int_range ("ft_isascii", ft_isascii, isascii, 1);
+  _s_section ("ft_isprint");
+  _s_test_int_range ("ft_isprint", ft_isprint, isprint, 1);
+  _s_print_results ();
+  return (_s_fail != 0);
+}