Added unit tests for Vector data type

Makefile

@@ -2,30 +2,39 @@ CC = gcc
 CFLAGS = -Wall -Wextra -Werror -pedantic-errors -fstack-protector-strong \
 	-fsanitize=address -fsanitize=undefined -fstack-clash-protection \
 	-Wwrite-strings -std=c99
-LDFLAGS = -fsanitize=address -fsanitize=undefined
 
 SRC_DIR = src
 OBJ_DIR = obj
+TESTS_SRC = tests
 
 TARGET = usage
+TEST_TARGET = test_vector
+
 LIB_OBJS = $(OBJ_DIR)/vector.o $(OBJ_DIR)/map.o
 PROG_OBJS = $(OBJ_DIR)/usage.o
+TESTS_OBJS = $(OBJ_DIR)/test_vector.o
 
 .PHONY: all clean
 
-all: $(TARGET)
+all: $(TARGET) $(TEST_TARGET)
 
 $(TARGET): $(PROG_OBJS) $(LIB_OBJS)
 	$(CC) $(CFLAGS) -o $@ $^
 
+$(TEST_TARGET): $(TESTS_OBJS) $(OBJ_DIR)/vector.o
+	$(CC) $(CFLAGS) -o $@ $^
+
 $(OBJ_DIR)/%.o: $(SRC_DIR)/%.c | $(OBJ_DIR)
 	$(CC) $(CFLAGS) -c -o $@ $<
 
 $(OBJ_DIR)/%.o: %.c | $(OBJ_DIR)
 	$(CC) $(CFLAGS) -c -o $@ $<
 
+$(OBJ_DIR)/%.o: $(TESTS_SRC)/%.c | $(OBJ_DIR)
+	$(CC) $(CFLAGS) -c -o $@ $<
+
 $(OBJ_DIR):
 	mkdir -p $(OBJ_DIR)
 
 clean:
-	rm -rf $(OBJ_DIR) $(TARGET)
+	rm -rf $(OBJ_DIR) $(TARGET) $(TEST_TARGET)