Update test/base/cache.ts

Co-authored-by: João Moreno <[email protected]>

Author: sbatten

test/base/cache.ts

@@ -230,7 +230,7 @@ export class Cache extends EventEmitter {
 			this.activeLayer = (async () => {
 				const execAsync = promisify(exec);
 
-				const targetPath = this.externalLayersPath || this.layersPath;
+				const targetPath = this.externalLayersPath ?? this.layersPath;
 				const gitStatusPath = this.externalLayersPath
 					? `${path.relative(await this._getGitRoot(targetPath), targetPath)}/*`
 					: 'test/simulation/cache/layers/*';