feat: handle spawn error on gradle command

lib/index.ts

@@ -520,7 +520,6 @@ async function getAllDeps(
   if (gradleVersion.match(/Gradle 1/)) {
     throw new Error('Gradle 1.x is not supported');
   }
-
   try {
     const extractedJSON = await getAllDepsWithPlugin(
       root,

lib/sub-process.ts

@@ -52,6 +52,10 @@ export function execute(
       stderr = stderr + data;
     });
 
+    proc.on('error', (error) => {
+      stderr = stderr + error;
+    });
+
     proc.on('close', (code: number) => {
       if (code !== 0) {
         const fullCommand = command + ' ' + args.join(' ');

test/system/failure-states.test.ts

@@ -1,7 +1,7 @@
 import * as path from 'path';
+import * as gradle from '../../lib';
 import { fixtureDir } from '../common';
 import { inspect } from '../../lib';
-
 const rootNoWrapper = fixtureDir('no wrapper');
 
 test('malformed build.gradle', async () => {