Override app version and name when loading apps from default_app.

Fixes #346.

atom/browser/default_app/main.js

@@ -1,5 +1,6 @@
 var app = require('app');
 var dialog = require('dialog');
+var fs = require('fs');
 var path = require('path');
 var optimist = require('optimist');
 
@@ -15,7 +16,21 @@ var argv = optimist(process.argv.slice(1)).boolean('ci').argv;
 // start the default app.
 if (argv._.length > 0) {
   try {
-    require(path.resolve(argv._[0]));
+    // Override app name and version.
+    var packagePath = path.resolve(argv._[0]);
+    var packageJsonPath = path.join(packagePath, 'package.json');
+    if (fs.existsSync(packageJsonPath)) {
+      var packageJson = JSON.parse(fs.readFileSync(packageJsonPath));
+      if (packageJson.version)
+        app.setVersion(packageJson.version);
+      if (packageJson.productName)
+        app.setName(packageJson.productName);
+      else if (packageJson.name)
+        app.setName(packageJson.name);
+    }
+
+    // Run the app.
+    require(packagePath);
   } catch(e) {
     if (e.code == 'MODULE_NOT_FOUND') {
       app.focus();

spec/api-app-spec.coffee

@@ -15,11 +15,11 @@ describe 'app module', ->
 
   describe 'app.getName()', ->
     it 'returns the name field of package.json', ->
-      assert.equal app.getName(), 'Atom Shell Default App'
+      assert.equal app.getName(), 'Atom Shell Test App'
 
   describe 'app.setName(name)', ->
     it 'overrides the name', ->
-      assert.equal app.getName(), 'Atom Shell Default App'
+      assert.equal app.getName(), 'Atom Shell Test App'
       app.setName 'test-name'
       assert.equal app.getName(), 'test-name'
       app.setName 'Atom Shell Default App'

spec/package.json

@@ -1,5 +1,6 @@
 {
   "name": "atom-shell-specs",
+  "productName": "Atom Shell Test App",
   "main": "static/main.js",
   "version": "0.1.0",