adding api unit tests

Makefile

@@ -26,6 +26,7 @@ travis:
 
 	@mkdir -p logs
 
+	@go test $(GOFLAGS) -run=$(TESTS) -test.v -test.timeout=180s ./api || exit 1
 	@go test $(GOFLAGS) -run=$(TESTS) -test.v -test.timeout=12s ./model || exit 1
 
 build: