From 216bce31632480ce70cc03b1b2a57ec12440afd7 Mon Sep 17 00:00:00 2001
From: sAm_vdP <bartsteinmayr@gmail.com>
Date: Thu, 31 May 2018 12:49:00 -0700
Subject: [PATCH] Fix jest snapshot testing on windows

Summary:
Fixes #19370

Applied changes to existing project that uses jest snapshot testing. Testing was broken before and now works.

To verify: Run any snapshot test containing an image reference on Windows before and after this PR.

[WINDOWS][BUGFIX][jest] - Fixed jest snapshot testing on windows
Closes https://github.com/facebook/react-native/pull/19496

Differential Revision: D8195947

Pulled By: hramos

fbshipit-source-id: 909b5fe7cfd8c6286baf161a227a359854a37603
---
 jest-preset.json             | 2 +-
 jest/assetFileTransformer.js | 5 ++++-
 package.json                 | 2 +-
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/jest-preset.json b/jest-preset.json
index afd12eb96..c7fb437e4 100644
--- a/jest-preset.json
+++ b/jest-preset.json
@@ -15,7 +15,7 @@
   ],
   "transform": {
     "^.+\\.js$": "babel-jest",
-    "^[./a-zA-Z0-9$_-]+\\.(bmp|gif|jpg|jpeg|mp4|png|psd|svg|webp)$": "<rootDir>/node_modules/react-native/jest/assetFileTransformer.js"
+    "^.+\\.(bmp|gif|jpg|jpeg|mp4|png|psd|svg|webp)$": "<rootDir>/node_modules/react-native/jest/assetFileTransformer.js"
   },
   "transformIgnorePatterns": [
     "node_modules/(?!(jest-)?react-native|react-clone-referenced-element)"
diff --git a/jest/assetFileTransformer.js b/jest/assetFileTransformer.js
index da6cf34a0..85f4a7bce 100644
--- a/jest/assetFileTransformer.js
+++ b/jest/assetFileTransformer.js
@@ -21,7 +21,10 @@ module.exports = {
   // the Jest snapshot.
   process: (_, filename) =>
     `module.exports = {
-      testUri: ${JSON.stringify(path.relative(__dirname, filename))}
+      testUri: 
+        ${JSON.stringify(
+          path.relative(__dirname, filename).replace(/\\/g, '/'),
+        )}
     };`,
   getCacheKey: createCacheKeyFunction([__filename]),
 };
diff --git a/package.json b/package.json
index d619cb176..373cdc2e6 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
   },
   "jest": {
     "transform": {
-      "^[./a-zA-Z0-9$_-]+\\.(bmp|gif|jpg|jpeg|mp4|png|psd|svg|webp)$": "<rootDir>/jest/assetFileTransformer.js",
+      "^.+\\.(bmp|gif|jpg|jpeg|mp4|png|psd|svg|webp)$": "<rootDir>/jest/assetFileTransformer.js",
       ".*": "./jest/preprocessor.js"
     },
     "setupFiles": [