tests: add intrusive list tests

Makefile

@@ -0,0 +1,34 @@
+CC = gcc
+CFLAGS = -Wall -Wextra -pedantic -std=c99 -Werror
+CPPFLAGS = -Iinclude/ -Itests/
+VPATH = src/ tests/
+
+SRC = \
+    src/list.c \
+
+OBJS = $(SRC:.c=.o)
+
+
+.PHONY: all
+all: $(OBJS)
+
+.PHONY: check
+check: testsuite
+	./testsuite --verbose
+
+TEST_SRC = \
+    tests/list.c \
+    tests/testsuite.c \
+
+TEST_OBJS = $(TEST_SRC:.c=.o)
+
+testsuite: LDFLAGS+=-lcriterion -fsanitize=address
+testsuite: CFLAGS+=-fsanitize=address
+testsuite: CFLAGS+=-g
+testsuite: $(OBJS) $(TEST_OBJS)
+
+.PHONY: clean
+clean:
+	$(RM) $(OBJS)
+	$(RM) $(TEST_OBJS)
+	$(RM) testsuite