fix: external css files path resolution

Author: Jakub Freisler

lib/process-style.js

@@ -53,7 +53,14 @@ module.exports = function processStyle(stylePart, filePath, config = {}) {
   const vueJestConfig = getVueJestConfig(config)
 
   if (stylePart.src && !stylePart.content) {
-    stylePart.content = loadSrc(stylePart.src, filePath)
+    const cssFilePath = applyModuleNameMapper(
+      stylePart.src,
+      filePath,
+      config,
+      stylePart.lang
+    )
+    stylePart.content = loadSrc(cssFilePath, filePath)
+    filePath = cssFilePath
   }
 
   if (vueJestConfig.experimentalCSSCompile === false || !stylePart.content) {