Add TestBase.take_screenshot(window=None) in bitmessageqt.tests:

it shows specified window (or the main window), execs the app
and saves screenshot in png file in the appdata with full test name
in the file name.

Used it in TestUISignaler.test_updateStatusBar and TestSupport.

.travis.yml

@@ -18,5 +18,5 @@ install:
   - export PYTHONWARNINGS=all
 script:
   - python checkdeps.py
-  - xvfb-run src/bitmessagemain.py -t
+  - python src/bitmessagemain.py -t
   - python -bm tests

requirements.txt

@@ -2,3 +2,4 @@ coverage
 python_prctl
 psutil
 pycrypto
+xvfbwrapper;platform_system=="Linux"

src/bitmessageqt/tests/main.py

@@ -2,6 +2,7 @@
 
 import Queue
 import sys
+import os
 import unittest
 
 from PyQt4 import QtCore, QtGui
@@ -23,6 +24,22 @@ class TestBase(unittest.TestCase):
             self.window = bitmessageqt.MyForm()
             self.window.appIndicatorInit(self.app)
 
+    def take_screenshot(self, window=None):
+        """Take a screenshot of the *window* or main window if not set"""
+        def save_screenshot():
+            """Save screenshot and quit app clause"""
+            screenshot = QtGui.QPixmap.grabWindow(
+                self.app.desktop().winId())
+            screenshot.save(os.path.join(
+                bitmessageqt.state.appdata, '%s.png' % self.id()))
+            self.app.quit()
+
+        timer = QtCore.QTimer()
+        timer.timeout.connect(save_screenshot)
+        timer.start(200)
+        (window or self.window).show()
+        self.app.exec_()
+
     def tearDown(self):
         # self.app.deleteLater()
         while True:
@@ -55,6 +72,4 @@ class TestUISignaler(TestBase):
                 _translate("test", "Testing updateStatusBar..."), 1)
         ))
 
-        QtCore.QTimer.singleShot(60, self.app.quit)
+        self.take_screenshot()
-        self.app.exec_()
-        # self.app.processEvents(QtCore.QEventLoop.AllEvents, 60)

src/bitmessageqt/tests/support.py

@@ -31,3 +31,5 @@ class TestSupport(TestBase):
             ui.lineEditSubject.text(), self.SUPPORT_SUBJECT)
         self.assertIn(
             sys.version, ui.textEditMessage.toPlainText())
+
+        self.take_screenshot()

src/tests/core.py

@@ -3,6 +3,7 @@ Tests for core and those that do not work outside
 (because of import error for example)
 """
 
+import atexit
 import os
 import pickle  # nosec
 import Queue
@@ -398,8 +399,9 @@ def run():
     suite = loader.loadTestsFromTestCase(TestCore)
     try:
         import bitmessageqt.tests
+        from xvfbwrapper import Xvfb
     except ImportError:
-        pass
+        Xvfb = None
     else:
         qt_tests = loader.loadTestsFromModule(bitmessageqt.tests)
         suite.addTests(qt_tests)
@@ -410,4 +412,8 @@ def run():
 
     sys.excepthook = keep_exc
 
+    if Xvfb:
+        vdisplay = Xvfb(width=1024, height=768)
+        vdisplay.start()
+        atexit.register(vdisplay.stop)
     return unittest.TextTestRunner(verbosity=2).run(suite)