Also reapply the test framework patch when a parent module of index.j…

…s is retrieved from require's cache.

Fixes the scenario described in #205 when there's an unexpected-with-plugins.js or similar construct involved.

lib/index.js

@@ -1,16 +1,23 @@
-/*global __filename*/
 var testFrameworkPatch = require('./testFrameworkPatch');
-if (testFrameworkPatch.applyPatch() && typeof require === 'function' && require.cache) {
-    // Make sure that the 'it' global gets patched in every context where Unexpected is required,
-    // but prevent rereading index.js from disc each time:
-    Object.defineProperty(require.cache, __filename, {
+
+function applyTestFrameworkPatchWhenLoaded(mod) {
+    Object.defineProperty(require.cache, mod.id, {
         get: function () {
             testFrameworkPatch.applyPatch();
-            return module;
+            return mod;
         }
     });
 }
 
+if (testFrameworkPatch.applyPatch() && typeof require === 'function' && require.cache) {
+    // Make sure that the 'it' global gets patched in every context where Unexpected is required,
+    // but prevent rereading index.js from disc each time:
+
+    for (var mod = module ; mod ; mod = mod.parent) {
+        applyTestFrameworkPatchWhenLoaded(mod);
+    }
+}
+
 module.exports = require('./Unexpected').create()
     .use(require('./styles'))
     .use(require('./types'))