evalexpr: tests: add Criterion testsuite

Makefile

@@ -1,7 +1,7 @@
 CC = gcc
 CPPFLAGS = -Isrc/ -D_POSIX_C_SOURCE=200809L -D_USE_CLIMBING=$(USE_CLIMBING)
 CFLAGS = -Wall -Wextra -pedantic -Werror -std=c99
-VPATH = src/
+VPATH = src/ tests/
 USE_CLIMBING = 1
 
 SRC = \
@@ -19,6 +19,20 @@ all: $(BIN)
 # Write this one rule instead of using the implicit rules to buid at the root
 $(BIN): $(OBJ) src/evalexpr.o
 
+check: testsuite
+	./testsuite --verbose
+
+TEST_SRC = \
+    tests/climbing.c \
+    tests/recursive.c \
+    tests/testsuite.c \
+
+TEST_OBJ = $(TEST_SRC:.c=.o)
+
+testsuite: LDFLAGS+=-lcriterion -fsanitize=address
+testsuite: CFLAGS+=-fsanitize=address
+testsuite: $(OBJ) $(TEST_OBJ)
+
 .PHONY: clean
 clean:
 	$(RM) $(OBJ) # remove object files