diff --git a/test/commands/status.ts b/test/commands/status.ts
index 31defdae..dbd76fc1 100644
--- a/test/commands/status.ts
+++ b/test/commands/status.ts
@@ -16,7 +16,7 @@ describe('Test clasp status function', () => {
       {file: 'should/alsoBeIgnored', data: TEST_CODE_JS},
     ]);
     const result = runClasp(['status', '--json'], {cwd: tmpdir});
-    const resultJson = JSON.parse(result.stdout.toString('utf-8'));
+    const resultJson = JSON.parse(result.stdout);
     expect(resultJson.untrackedFiles).to.have.members([
       '.clasp.json',
       '.claspignore', // TODO Should these be untracked?
@@ -36,7 +36,7 @@ describe('Test clasp status function', () => {
       {file: 'node_modules/fsevents/build/Release/.deps/Release/.node.d', data: TEST_CODE_JS},
     ]);
     const result = runClasp(['status', '--json'], {cwd: tmpdir});
-    const resultJson = JSON.parse(result.stdout.toString('utf-8'));
+    const resultJson = JSON.parse(result.stdout);
     expect(resultJson.untrackedFiles).to.have.members([
       '.clasp.json',
       '.claspignore', // TODO Should these be untracked?
@@ -57,7 +57,7 @@ describe('Test clasp status function', () => {
       {file: 'dist/should/alsoBeIgnored', data: TEST_CODE_JS},
     ]);
     const result = runClasp(['status', '--json'], {cwd: tmpdir});
-    const resultJson = JSON.parse(result.stdout.toString('utf-8'));
+    const resultJson = JSON.parse(result.stdout);
     expect(result.stderr).to.equal('');
     expect(result.status).to.equal(0);
     expect(resultJson.untrackedFiles).to.have.members(['dist/should/alsoBeIgnored', 'dist/shouldBeIgnored']);
@@ -76,7 +76,7 @@ describe('Test clasp status function', () => {
     const result = runClasp(['status', '--json'], {cwd: tmpdir + '/src'});
     expect(result.stderr).to.equal('');
     expect(result.status).to.equal(0);
-    const resultJson = JSON.parse(result.stdout.toString('utf-8'));
+    const resultJson = JSON.parse(result.stdout);
     expect(resultJson.untrackedFiles).to.have.members(['../build/should/alsoBeIgnored', '../build/shouldBeIgnored']);
     expect(resultJson.filesToPush).to.have.members(['../build/main.js', '../build/appsscript.json']);
     // TODO: cleanup by del/rimraf tmpdir
diff --git a/test/functions.ts b/test/functions.ts
index bd6fc895..2da596d1 100644
--- a/test/functions.ts
+++ b/test/functions.ts
@@ -11,14 +11,14 @@ import {
 import {spawnSync} from 'child_process';
 
 export function runClasp(args: string[], opts = {}) {
-  const options = Object.assign(
-    {},
-    {
-      encoding: 'utf8',
+  return spawnSync('node', [`${process.cwd()}/build/src/index.js`, ...args], {
+    encoding: 'utf8',
+    env: {
+      ...process.env,
+      NODE_NO_WARNINGS: '1',
     },
-    opts ?? {}
-  );
-  return spawnSync('node', [`${process.cwd()}/build/src/index.js`, ...args], options);
+    ...opts,
+  });
 }
 
 /** basic cleanup after tests */