diff --git a/.gitignore b/.gitignore
index 49c6c0e..a40b9d1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,6 +19,7 @@ test
 minishell
 testexec.sh
 tests/*
+!tests/Makefile
 !tests/*.c
 !tests/*.h
 infile
diff --git a/Makefile b/Makefile
index 9304110..c1a1cb7 100644
--- a/Makefile
+++ b/Makefile
@@ -13,6 +13,7 @@ export CFLAGS
 srcs = \
 
 objs = $(srcs:.c=.o)
+export objs
 minishell_objs = $(addsuffix .o,src/$(NAME)) $(objs)
 all_objs = $(minishell_objs)
 deps = $(all_objs:.o=.d)
@@ -36,6 +37,7 @@ clean:
 
 fclean: clean
 	rm -f $(NAME)
+	+make -C tests fclean
 
 re:
 	+make fclean
@@ -45,10 +47,19 @@ norm:
 	norminette src | grep -v OK || true
 
 tests:
+	@echo "Running tests with AddressSanitizer..."
 	+CFLAGS="$(CFLAGS) $(ASAN)" make re
 	shellspec
+	+CFLAGS="$(CFLAGS) $(ASAN)" make -C tests
+
+	@echo "Running tests with UndefinedBehaviourSanitizer..."
 	+CFLAGS="$(CFLAGS) $(UBSAN)" make re
 	shellspec
+	+CFLAGS="$(CFLAGS) $(UBTSAN)" make -C tests
+
+	@echo "Running tests with ThreadSanitizer..."
 	+CFLAGS="$(CFLAGS) $(TSAN)" make re
 	shellspec
+	+CFLAGS="$(CFLAGS) $(TSAN)" make -C tests
+
 	@echo "All tests passed!"
diff --git a/tests/Makefile b/tests/Makefile
new file mode 100644
index 0000000..fef31ea
--- /dev/null
+++ b/tests/Makefile
@@ -0,0 +1,21 @@
+rawtests = \
+	metacharacters \
+
+tests = $(addprefix test_,$(rawtests))
+test_objs = $(addsuffix .o,$(tests))
+objs := $(addprefix ../,$(objs))
+
+.PHONY: run
+
+%.o: %.c
+	$(CC) -c $(CFLAGS) $(LDFLAGS) -o $*.o $*.c
+	$(CC) -MM $(CFLAGS) $(LDFLAGS) $*.c > $*.d
+
+test_%: %.o $(objs)
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $*.o $(objs) $(LDLIBS)
+
+run: $(tests)
+	$(addprefix ./,$(addsuffix &&,$(tests))) echo "Finished running C tests"
+
+fclean:
+	rm -f $(tests)
diff --git a/tests/metacharacters.c b/tests/metacharacters.c
new file mode 100644
index 0000000..85c8e3b
--- /dev/null
+++ b/tests/metacharacters.c
@@ -0,0 +1,59 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   metacharacters.c                                   :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: kcolin <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/02/06 15:21:00 by kcolin            #+#    #+#             */
+/*   Updated: 2025/02/06 15:57:40 by kcolin           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "../src/parser/matchers/metacharacter.h"
+#include <assert.h>
+#include <stdio.h>
+#include <unistd.h>
+
+void	test_metacharacters(void)
+{
+	dup2(STDERR_FILENO, STDIN_FILENO);
+	char c = 'a';
+	printf("not metachar:");
+	while (c != 'z')
+	{
+		printf("%c", c);
+		assert(!is_metacharacter(c));
+		c++;
+	}
+	c = 'A';
+	while (c != 'Z')
+	{
+		printf("%c", c);
+		assert(!is_metacharacter(c));
+		c++;
+	}
+	c = '0';
+	while (c != '9')
+	{
+		printf("%c", c);
+		assert(!is_metacharacter(c));
+		c++;
+	}
+	char	*metachars = " \t\n|&;()<>";
+	int		i = 0;
+	printf("\nmetachar:");
+	while (metachars[i] != '\0')
+	{
+		printf("%c", metachars[i]);
+		assert(is_metacharacter(metachars[i]));
+		i++;
+	}
+	printf("\n");
+}
+
+int	main(void)
+{
+	test_metacharacters();
+	return (0);
+}