Prevent testOptions from changing the Babel working directory

Author: novemberborn

lib/babel-pipeline.js

@@ -122,9 +122,9 @@ function build(projectDir, cacheDir, userOptions, compileEnhancements) {
 		const partialTestConfig = babel.loadPartialConfig(Object.assign({
 			babelrc: false,
 			babelrcRoots: [projectDir],
-			configFile: false,
-			cwd: projectDir
+			configFile: false
 		}, userOptions && userOptions.testOptions, {
+			cwd: projectDir,
 			envName,
 			inputSourceMap,
 			filename,