fix: fix failures on windows

Author: 3cp

package.json

@@ -17,8 +17,8 @@
     "postversion": "git push && git push --tags",
     "pretest": "npm run lint",
     "prepare": "babel src -d dist",
-    "nodejs-test": "tape -r @babel/register 'spec/**/*.spec.js' | tap-dot",
-    "coverage": "nyc --reporter=lcov tape -r @babel/register 'spec/**/*.spec.js' | tap-dot",
+    "nodejs-test": "tape -r @babel/register \"spec/**/*.spec.js\" | tap-dot",
+    "coverage": "nyc --reporter=lcov tape -r @babel/register \"spec/**/*.spec.js\" | tap-dot",
     "browser-test": "browserify -t babelify spec/all-browser-spec.js | tape-run | tap-dot",
     "test": "npm run nodejs-test && npm run browser-test"
   },

spec/mock.js

@@ -1,13 +1,15 @@
+import path from 'path';
 import _defaultLocator from '../src/package-locators/default';
 
 export function mockResolve(path) {
   return 'node_modules/' + path;
 }
 
 export function buildReadFile(fakeFs = {}) {
-  return path => {
-    if (fakeFs.hasOwnProperty(path)) return Promise.resolve(fakeFs[path]);
-    return Promise.reject('no file at ' + path);
+  return p => {
+    p = path.normalize(p).replace(/\\/g, '/');
+    if (fakeFs.hasOwnProperty(p)) return Promise.resolve(fakeFs[p]);
+    return Promise.reject('no file at ' + p);
   };
 }