diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b56c2906349..4c3942eaa5f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -8,5 +8,6 @@ jobs:
       - uses: actions/setup-node@v2
         with:
           node-version: '14'
+      - run: rm -rf build
       - run: yarn install
       - run: yarn test
diff --git a/package.json b/package.json
index ae7562ce11a..89c3dbf6c26 100644
--- a/package.json
+++ b/package.json
@@ -19,12 +19,12 @@
     "test:lint": "eslint src --ext .ts",
     "test:prettier": "prettier \"src/**/*.ts\" --list-different",
     "test:spelling": "cspell \"{README.md,.github/*.md,src/**/*.ts}\"",
-    "test:unit": "jest",
+    "test:unit": "jest src",
     "check-cli": "run-s test diff-integration-tests check-integration-tests",
     "check-integration-tests": "run-s check-integration-test:*",
     "diff-integration-tests": "mkdir -p diff && rm -rf diff/test && cp -r test diff/test && rm -rf diff/test/test-*/.git && cd diff && git init --quiet && git add -A && git commit --quiet --no-verify --allow-empty -m 'WIP' && echo '\\n\\nCommitted most recent integration test output in the \"diff\" directory. Review the changes with \"cd diff && git diff HEAD\" or your preferred git diff viewer.'",
     "watch:build": "tsc -p tsconfig.json -w",
-    "watch:test": "jest --watch",
+    "watch:test": "jest src --watch",
     "cov": "run-s build test:unit cov:html cov:lcov && open-cli coverage/index.html",
     "cov:html": "nyc report --reporter=html",
     "cov:lcov": "nyc report --reporter=lcov",