diff --git a/Makefile b/Makefile
index f914b9b..c7122ef 100644
--- a/Makefile
+++ b/Makefile
@@ -152,12 +152,18 @@ out/vcd.wasm: $(WASM_MAIN) $(CPP_FILES) $(HPP_FILES) Makefile
 
 
 .PHONY: all build watch dev start test pretest lint jestc copydist cleandist
-.PHONY: test
+.PHONY: test testonly
 
 
+watch:
+	npm run watch
+
 test:
 	npm run test
 
+testonly:
+	npm run testonly
+
 
 clean:
 	rm -rf out/*
diff --git a/package.json b/package.json
index 86b3e3e..eccc267 100644
--- a/package.json
+++ b/package.json
@@ -5,6 +5,8 @@
   "main": "lib/index.js",
   "scripts": {
     "test": "eslint bin lib && nyc -r=text -r=lcov mocha",
+    "testonly": "nyc -r=text -r=lcov mocha",
+    "watch": "mocha --watch",
     "install": "node bin/build.js",
     "prepare": "node bin/build.js"
   },