fix tests

build_test.mk

@@ -4,7 +4,9 @@ endif
 
 .DEFAULT_GOAL := all
 
-include common.mk
+TOP_DIR ?= .
+
+include $(TOP_DIR)/common.mk
 
 TARGET=test/$(TEST)
 
@@ -43,14 +45,14 @@ VPATH += $(COMMON_VPATH)
 PLATFORM:=TEST
 
 ifneq ($(filter $(FULL_TESTS),$(TEST)),)
-include tests/$(TEST)/rules.mk
+include $(TOP_DIR)/tests/$(TEST)/rules.mk
 endif
 
-include common_features.mk
+include $(TOP_DIR)/common_features.mk
 include $(TMK_PATH)/common.mk
 include $(QUANTUM_PATH)/serial_link/tests/rules.mk
 ifneq ($(filter $(FULL_TESTS),$(TEST)),)
-include build_full_test.mk
+include $(TOP_DIR)/build_full_test.mk
 endif
 
 $(TEST_OBJ)/$(TEST)_SRC := $($(TEST)_SRC)