test: fix integration tests

- They should fail, if any test fails
- Use "set -e" instead of "|| exit 1", because it suffices to be specified
  at the top of each file

integration-testing/multi-nodejs-test/test.sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 
+set -e
+
 cd "$( dirname "$( readlink -f "$0" )" )" || exit 1
 # shellcheck disable=SC1090
 [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
@@ -20,8 +22,8 @@ for i in  0.10 0.12 4 5 6 7 8 9 10 11 ; do
     mkdir target
     nvm install "$i"
     nvm exec "$i" npm install
-    nvm exec "$i" npm run test || exit 1
-    nvm exec "$i" npm run test-precompile || exit 1
+    nvm exec "$i" npm run test
+    nvm exec "$i" npm run test-precompile
 
     echo Success
 done