fix: Cannot start test script if config-overrides path is set via c…

…ommand line argument (#595)

overrides/jest.js

@@ -21,11 +21,14 @@ packageJson.jest = jestOverrides;
 // override createJestConfig in memory
 require.cache[require.resolve(createJestConfigPath)].exports =
 	() => overrides.jest(rewireJestConfig(config));
-// Passing the --scripts-version on to the original test script can result
+// Passing the --scripts-version and --config-overrides on to the original test script can result
 // in the test script rejecting it as an invalid option. So strip it out of
 // the command line arguments before invoking the test script.
 if (paths.customScriptsIndex > -1) {
 	process.argv.splice(paths.customScriptsIndex, 2);
 }
+if (paths.configOverridesIndex > -1) {
+	process.argv.splice(paths.configOverridesIndex, 2);
+}
 
 module.exports = require(createJestConfigPath);

scripts/utils/paths.js

@@ -17,9 +17,10 @@ var config_overrides = customPath
   : `${ projectDir }/config-overrides`;
 const co_index = process.argv.indexOf('--config-overrides');
 
+var has_co_argument = false;
 if (co_index > -1 && co_index + 1 <= process.argv.length) {
+  has_co_argument = true;
   config_overrides = path.resolve(process.argv[co_index + 1]);
-  process.argv.splice(co_index, 2);
 }
 
 const scriptVersion = custom_scripts || 'react-scripts';
@@ -33,5 +34,6 @@ const paths = require(modulePath + '/config/paths');
 module.exports = Object.assign({
   scriptVersion: modulePath,
   configOverrides: config_overrides,
-  customScriptsIndex: (custom_scripts ? cs_index : -1)
+  customScriptsIndex: (custom_scripts ? cs_index : -1),
+  configOverridesIndex: (has_co_argument ? co_index : -1),
 }, paths);