Ignore native module tests on Windows debug build

This resolves #2558. There are no more errors when running test.py on
the debug build in Windows. When running the release build the tests
will be executed as usual.

.gitignore

@@ -17,3 +17,4 @@ node_modules/
 *.pyc
 debug.log
 npm-debug.log
+atom/common/chrome_version.h

docs/development/build-instructions-windows.md

@@ -54,7 +54,7 @@ You can also only build the Debug target:
 python script\build.py -c D
 ```
 
-After building is done, you can find `electron.exe` under `out\D` (debug 
+After building is done, you can find `electron.exe` under `out\D` (debug
 target) or under `out\R` (release target).
 
 ## 64bit build
@@ -82,6 +82,15 @@ Test functionality using:
 python script\test.py
 ```
 
+Tests that include native modules (e.g. `runas`) can't be executed with the
+debug build (see #2558 for details), but they will work with the release build.
+
+To run the tests with the release build use:
+
+```powershell
+python script\test.py -R
+```
+
 ## Troubleshooting
 
 ### Command xxxx not found

spec/modules-spec.coffee

@@ -7,16 +7,20 @@ describe 'third-party module', ->
   fixtures = path.join __dirname, 'fixtures'
   temp.track()
 
-  describe 'runas', ->
-    it 'can be required in renderer', ->
-      require 'runas'
+  # If the test is executed with the debug build on Windows, we will skip it
+  # because native modules don't work with the debug build (see issue #2558).
+  if process.platform isnt 'win32' or
+      process.execPath.toLowerCase().indexOf('\\out\\d\\') is -1
+    describe 'runas', ->
+      it 'can be required in renderer', ->
+        require 'runas'
 
-    it 'can be required in node binary', (done) ->
-      runas = path.join fixtures, 'module', 'runas.js'
-      child = require('child_process').fork runas
-      child.on 'message', (msg) ->
-        assert.equal msg, 'ok'
-        done()
+      it 'can be required in node binary', (done) ->
+        runas = path.join fixtures, 'module', 'runas.js'
+        child = require('child_process').fork runas
+        child.on 'message', (msg) ->
+          assert.equal msg, 'ok'
+          done()
 
   describe 'q', ->
     Q = require 'q'

spec/webview-spec.coffee

@@ -48,18 +48,22 @@ describe '<webview> tag', ->
       webview.src = "file://#{fixtures}/pages/d.html"
       document.body.appendChild webview
 
-    it 'loads native modules when navigation happens', (done) ->
-      listener = (e) ->
-        webview.removeEventListener 'did-finish-load', listener
-        listener2 = (e) ->
-          assert.equal e.message, 'function'
-          done()
-        webview.addEventListener 'console-message', listener2
-        webview.reload()
-      webview.addEventListener 'did-finish-load', listener
-      webview.setAttribute 'nodeintegration', 'on'
-      webview.src = "file://#{fixtures}/pages/native-module.html"
-      document.body.appendChild webview
+    # If the test is executed with the debug build on Windows, we will skip it
+    # because native modules don't work with the debug build (see issue #2558).
+    if process.platform isnt 'win32' or
+        process.execPath.toLowerCase().indexOf('\\out\\d\\') is -1
+      it 'loads native modules when navigation happens', (done) ->
+        listener = (e) ->
+          webview.removeEventListener 'did-finish-load', listener
+          listener2 = (e) ->
+            assert.equal e.message, 'function'
+            done()
+          webview.addEventListener 'console-message', listener2
+          webview.reload()
+        webview.addEventListener 'did-finish-load', listener
+        webview.setAttribute 'nodeintegration', 'on'
+        webview.src = "file://#{fixtures}/pages/native-module.html"
+        document.body.appendChild webview
 
   describe 'preload attribute', ->
     it 'loads the script before other scripts in window', (done) ->