Run tests in parallel

Author: webmaster128

.circleci/config.yml

@@ -89,7 +89,8 @@ jobs:
           environment:
             WASMD_ENABLED: 1
             SKIP_BUILD: 1
-          command: yarn test
+          # TODO: Remove concurrency argument to speed up testing (https://github.com/CosmWasm/cosmwasm-js/issues/185)
+          command: yarn test --concurrency 1 --stream
       - run:
           name: Run CLI selftest
           working_directory: packages/cli