From 2bf200404f6b247bc21d1e62a3bc09603fb5e49e Mon Sep 17 00:00:00 2001
From: dcarnicer <karnimgx@gmail.com>
Date: Tue, 30 Jun 2026 17:33:13 +0200
Subject: [PATCH] fix: make LWC unit tests pass on a clean checkout

Two independent issues caused 5 of 7 Jest suites to fail:

1. c/* imports for components under PackageComponents/lwc did not
   resolve, because sfdx-project.json only declares force-app as a
   packageDirectory and the sfdx-lwc-jest resolver derives module
   paths from it. Added a moduleNameMapper for the c/ namespace.

2. The lscMobileInline_SimpleWidget test mocked lightning/barcodeScanner,
   but the component imports getBarcodeScanner from
   lightning/mobileCapabilities. Corrected the mock target.

Result: 7 suites / 29 tests pass.

Fixes #38
---
 .../__tests__/lscMobileInline_SimpleWidget.test.js    | 11 +++++++----
 jest.config.js                                        |  8 +++++++-
 2 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/PackageComponents/lwc/lscMobileInline_SimpleWidget/__tests__/lscMobileInline_SimpleWidget.test.js b/PackageComponents/lwc/lscMobileInline_SimpleWidget/__tests__/lscMobileInline_SimpleWidget.test.js
index 38b99ea..edaf738 100644
--- a/PackageComponents/lwc/lscMobileInline_SimpleWidget/__tests__/lscMobileInline_SimpleWidget.test.js
+++ b/PackageComponents/lwc/lscMobileInline_SimpleWidget/__tests__/lscMobileInline_SimpleWidget.test.js
@@ -1,11 +1,14 @@
 import { createElement } from '@lwc/engine-dom';
 import LscMobileInline_SimpleWidget from 'c/lscMobileInline_SimpleWidget';
 
-// Mock the lightning/barcodeScanner module
-jest.mock('lightning/barcodeScanner', () => {
+// Mock the lightning/mobileCapabilities module (the component imports getBarcodeScanner from it)
+jest.mock('lightning/mobileCapabilities', () => {
     return {
-        scan: jest.fn().mockImplementation(() => Promise.resolve({ value: '12345' })),
-        BarcodeScanner: jest.fn()
+        getBarcodeScanner: jest.fn().mockImplementation(() => ({
+            isAvailable: jest.fn().mockReturnValue(false),
+            beginCapture: jest.fn().mockImplementation(() => Promise.resolve({ value: '12345' })),
+            endCapture: jest.fn()
+        }))
     };
 }, { virtual: true });
 
diff --git a/jest.config.js b/jest.config.js
index f5a9fed..42def83 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -2,5 +2,11 @@ const { jestConfig } = require('@salesforce/sfdx-lwc-jest/config');
 
 module.exports = {
     ...jestConfig,
-    modulePathIgnorePatterns: ['<rootDir>/.localdevserver']
+    modulePathIgnorePatterns: ['<rootDir>/.localdevserver'],
+    // Components live under PackageComponents/lwc, which is not a sfdx-project.json
+    // packageDirectory, so the default resolver can't map `c/*` imports to them.
+    moduleNameMapper: {
+        ...(jestConfig.moduleNameMapper || {}),
+        '^c/(.+)$': '<rootDir>/PackageComponents/lwc/$1/$1'
+    }
 };