Update loadFile - allow passing globals, add some unit tests

README.md

@@ -129,7 +129,7 @@ I will keep adding more and of course if anyone wants to help - pull requests ar
 - http.ServerRequest
 
 
-### loadFile(path [, mocks])
+### loadFile(path [, mocks] [, globals])
 ### predictableNextTick(fn)
 ### predictableNextTick.pattern
 

lib/util.js

@@ -64,8 +64,9 @@ predictableNextTick.pattern = [0];
  *
  * @param {string} path Absolute path to module (file to load)
  * @param {Object=} mocks Hash of mocked dependencies
+ * @param {Object=} globals Hash of globals ()
  */
-var loadFile = function(filePath, mocks) {
+var loadFile = function(filePath, mocks, globals) {
   mocks = mocks || {};
 
   // this is necessary to allow relative path modules within loaded file
@@ -82,13 +83,18 @@ var loadFile = function(filePath, mocks) {
     },
     __dirname: path.dirname(filePath),
     __filename: filePath,
+    process: process,
     console: console,
     exports: exports,
     module: {
       exports: exports
     }
   };
 
+  Object.getOwnPropertyNames(globals || {}).forEach(function(name) {
+    context[name] = globals[name];
+  });
+
   vm.runInNewContext(fs.readFileSync(filePath), context);
   return context;
 };

test/fixtures/other.js

@@ -0,0 +1,3 @@
+// A fake module for testing util.loadFile()
+
+exports.id = 'LOCAL_MODULE';

test/fixtures/some.js

@@ -0,0 +1,6 @@
+// A fake module for testing util.loadFile()
+
+var privateNumber = 100;
+var privateFs = require('fs');
+var privateLocalModule = require('./other');
+var privateConsole = console;

test/util.spec.coffee

@@ -97,3 +97,34 @@ describe 'mock-util', ->
 
       waitsFor (-> callback.callCount), 'later added fn to be called', 100
       waitsFor (-> anotherCallback.callCount), 'another later added fn to be called', 100
+
+
+  #============================================================================
+  # util.loadFile()
+  #============================================================================
+  describe 'loadFile', ->
+    loadFile = util.loadFile
+    fixturePath = __dirname + '/fixtures/some.js'
+
+    it 'should load file with access to private state', ->
+      module = loadFile fixturePath
+      expect(module.privateNumber).toBe 100
+
+
+    it 'should inject mocks', ->
+      fsMock = {}
+      module = loadFile fixturePath, {fs: fsMock}
+      expect(module.privateFs).toBe fsMock
+
+
+    it 'should load local modules', ->
+      module = loadFile fixturePath
+      expect(module.privateLocalModule).toBeDefined()
+      expect(module.privateLocalModule.id).toBe 'LOCAL_MODULE'
+
+
+    it 'should inject globals', ->
+      fakeConsole = {}
+      module = loadFile fixturePath, {}, {console: fakeConsole}
+      expect(module.privateConsole).toBe fakeConsole
+