make : improve test target

- add a dependency on the test executables
- indicate to the user when some tests have failed

Author: cebtenzzre

Makefile

@@ -42,9 +42,10 @@ endif
 
 default: $(BUILD_TARGETS)
 
-test:
+test: $(TEST_TARGETS)
 	@echo "Running tests..."
-	@for test_target in $(TEST_TARGETS); do \
+	@failures=0; \
+	for test_target in $(TEST_TARGETS); do \
 		if [ "$$test_target" = "tests/test-tokenizer-0-llama" ]; then \
 			./$$test_target $(CURDIR)/models/ggml-vocab-llama.gguf; \
 		elif [ "$$test_target" = "tests/test-tokenizer-0-falcon" ]; then \
@@ -54,8 +55,15 @@ test:
 		else \
 			./$$test_target; \
 		fi; \
-	done
-	@echo "All tests have been run."
+		if [ $$? -ne 0 ]; then \
+			failures=$$(( failures + 1 )); \
+		fi; \
+	done; \
+	if [ $$failures -gt 0 ]; then \
+		printf '\n%%s tests failed.\n' $$failures; \
+		exit 1; \
+	fi
+	@printf '\nAll tests passed.\n'
 
 all: $(BUILD_TARGETS) $(TEST_TARGETS)