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, 9 deletions

diff --git a/tests/Makefile b/tests/Makefile
index 319fa22..f7f7ed4 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -1,31 +1,42 @@
 CC = cc
-CFLAGS =
-LIB = ../libft.a
+CFLAGS = -I ../inc -I inc
+
+SRCDIR = src
+BINDIR = bin
+
+LIB = ../lib/libft.a
 
 TESTS = test_strlen test_is test_mem test_cmp test_case test_strl test_search \
         test_atoi test_alloc
 
-all: $(TESTS)
-	@for t in $(TESTS); do \
-		echo "--- Running $$t ---"; \
+BINS = $(TESTS:%=$(BINDIR)/%)
+
+all: $(BINS)
+	@for t in $(BINS); do \
+		echo "$$(basename $$t):"; \
 		./$$t; \
 	done
 
-test_%: test_%.c $(LIB)
+# Order-only prerequisite (|): create bin/ if missing, but don't
+# rebuild binaries just because the directory's mtime changed.
+$(BINDIR)/test_%: $(SRCDIR)/test_%.c $(LIB) | $(BINDIR)
 	$(CC) $(CFLAGS) -o $@ $< $(LIB)
 
 # Tests comparing against BSD functions (strlcpy, strlcat, strnstr)
 # need -lbsd since these are not part of glibc by default.
-test_strl: test_strl.c $(LIB)
+$(BINDIR)/test_strl: $(SRCDIR)/test_strl.c $(LIB) | $(BINDIR)
 	$(CC) $(CFLAGS) -o $@ $< $(LIB) -lbsd
 
-test_search: test_search.c $(LIB)
+$(BINDIR)/test_search: $(SRCDIR)/test_search.c $(LIB) | $(BINDIR)
 	$(CC) $(CFLAGS) -o $@ $< $(LIB) -lbsd
 
+$(BINDIR):
+	mkdir -p $(BINDIR)
+
 $(LIB):
 	$(MAKE) -C ..
 
 clean:
-	rm -f $(TESTS)
+	rm -f $(BINS)
 
 .PHONY: all clean