normalize before micro-matching

packages/jest-core/src/SearchSource.ts

@@ -309,18 +309,22 @@ export default class SearchSource {
     const allFiles = this._context.hasteFS.getAllFiles();
     const options = {nocase: true, windows: false};
 
+    function normalizePosix(filePath: string) {
+      return filePath.replace(/\\/g, '/');
+    }
+
     paths = paths
       .map(p => {
-        const relativePath = path
-          .resolve(this._context.config.cwd, p)
-          .replace(/\\/g, '\\\\')
-          // Escape extended globs without a pattern: https://github.com/micromatch/micromatch#extended-globbing
-          // (* and ? are forbidden in file names)
-          .replace(/(@|\+|!)([^\(])/g, '\\$1$2')
-          // Allow search in hidden directories
-          .replace(/\\\./g, '\\\\.');
-        const match = micromatch(allFiles, relativePath, options);
-        return match[0];
+        // micromatch works with forward slashes: https://github.com/micromatch/micromatch#backslashes
+        const normalizedPath = normalizePosix(
+          path.resolve(this._context.config.cwd, p),
+        );
+        const match = micromatch(
+          allFiles.map(normalizePosix),
+          normalizedPath,
+          options,
+        );
+        return path.resolve(match[0]);
       })
       .filter(Boolean);
     return paths;