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#!/usr/bin/python
# -*- coding: utf-8 -*-
# libavg - Media Playback Engine.
# Copyright (C) 2003-2014 Ulrich von Zadow
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# Current versions can be found at www.libavg.de
#
import unittest
import sys
import os
import math
from libavg import avg, player, logger
def almostEqual(a, b, epsilon):
try:
bOk = True
for i in range(len(a)):
if not(almostEqual(a[i], b[i], epsilon)):
bOk = False
return bOk
except:
return math.fabs(a-b) < epsilon
def flatten(l):
ltype = type(l)
l = list(l)
i = 0
while i < len(l):
while isinstance(l[i], (list, tuple)):
if not l[i]:
l.pop(i)
i -= 1
break
else:
l[i:i + 1] = l[i]
i += 1
return ltype(l)
class SuppressOutput(object):
class Blackhole(object):
def write(self, *args):
pass
def __init__(self):
self.__savedStreams = [sys.stdout, sys.stderr]
def __enter__(self):
sys.stdout = self.Blackhole()
sys.stderr = self.Blackhole()
def __exit__(self, *args):
sys.stdout, sys.stderr = self.__savedStreams
class MouseEmulator(object):
def __init__(self):
self.btnStates = [False, False, False]
def sendMouseEvent(self, type_, x, y, btn=1):
helper = player.getTestHelper()
index = btn-1
if type_ == avg.Event.CURSOR_UP:
self.btnStates[index] = False
if type_ == avg.Event.CURSOR_DOWN:
self.btnStates[index] = True
helper.fakeMouseEvent(type_, self.btnStates[0], self.btnStates[1],
self.btnStates[2], x, y, btn)
class AVGTestCase(unittest.TestCase):
imageResultDirectory = "resultimages"
baselineImageResultDirectory = "baseline"
def __init__(self, testFuncName):
unittest.TestCase.__init__(self, testFuncName)
player.enableGLErrorChecks(True)
logger.configureCategory("MEMORY", logger.Severity.ERR);
logger.configureCategory("DEPREC", logger.Severity.ERR);
self.__testFuncName = testFuncName
self.__logger = avg.logger
self.__skipped = False
self.__warnOnImageDiff = False
self.__mouseEmulator = None
def __setupPlayer(self):
player.setMultiSampleSamples(1)
player.setResolution(0, 0, 0, 0)
@staticmethod
def setImageResultDirectory(name):
AVGTestCase.imageResultDirectory = name
@staticmethod
def getImageResultDir():
return AVGTestCase.imageResultDirectory
@staticmethod
def cleanResultDir():
dir = AVGTestCase.getImageResultDir()
try:
files = os.listdir(dir)
for file in files:
os.remove(dir+"/"+file)
except OSError:
try:
os.mkdir(dir)
except OSError:
pass
def start(self, warnOnImageDiff, actions):
self.__setupPlayer()
self.__dumpTestFrames = (os.getenv("AVG_DUMP_TEST_FRAMES") != None)
self.__delaying = False
self.__warnOnImageDiff = warnOnImageDiff
self.assert_(player.isPlaying() == 0)
self.actions = flatten(actions)
self.curFrame = 0
player.subscribe(player.ON_FRAME, self.__nextAction)
player.setFramerate(10000)
player.assumePixelsPerMM(1)
player.play()
self.assert_(player.isPlaying() == 0)
def delay(self, time):
def timeout():
self.__delaying = False
self.__delaying = True
player.setTimeout(time, timeout)
def compareImage(self, fileName):
bmp = player.screenshot()
self.compareBitmapToFile(bmp, fileName)
def compareBitmapToFile(self, bmp, fileName):
try:
baselineBmp = avg.Bitmap(AVGTestCase.baselineImageResultDirectory + "/"
+ fileName + ".png")
except RuntimeError:
bmp.save(AVGTestCase.getImageResultDir()+"/"+fileName+".png")
self.__logger.warning("Could not load image "+fileName+".png")
raise
diffBmp = bmp.subtract(baselineBmp)
average = diffBmp.getAvg()
stdDev = diffBmp.getStdDev()
if (average > 0.1 or stdDev > 0.5):
if self._isCurrentDirWriteable():
bmp.save(AVGTestCase.getImageResultDir() + "/" + fileName + ".png")
baselineBmp.save(AVGTestCase.getImageResultDir() + "/" + fileName
+ "_baseline.png")
diffBmp.save(AVGTestCase.getImageResultDir() + "/" + fileName
+ "_diff.png")
if (average > 2 or stdDev > 6):
msg = (" "+fileName+
": Difference image has avg=%(avg).2f, std dev=%(stddev).2f"%
{'avg':average, 'stddev':stdDev})
if self.__warnOnImageDiff:
sys.stderr.write("\n"+msg+"\n")
else:
self.fail(msg)
def areSimilarBmps(self, bmp1, bmp2, maxAvg, maxStdDev):
diffBmp = bmp1.subtract(bmp2)
avg = diffBmp.getAvg()
stdDev = diffBmp.getStdDev()
return avg <= maxAvg and stdDev <= maxStdDev
def assertException(self, code):
exceptionRaised = False
try:
code()
except:
exceptionRaised = True
self.assert_(exceptionRaised)
def assertAlmostEqual(self, a, b, epsilon=0.00001):
if not(almostEqual(a, b, epsilon)):
msg = "almostEqual: " + str(a) + " != " + str(b)
self.fail(msg)
def loadEmptyScene(self, resolution=(160,120)):
player.createMainCanvas(size=resolution)
root = player.getRootNode()
root.mediadir = "media"
return root
def initDefaultImageScene(self):
root = self.loadEmptyScene()
avg.ImageNode(id="testtiles", pos=(0,30), size=(65,65), href="rgb24-65x65.png",
maxtilewidth=16, maxtileheight=32, parent=root)
avg.ImageNode(id="test", pos=(64,30), href="rgb24-65x65.png", pivot=(0,0),
angle=0.274, parent=root)
avg.ImageNode(id="test1", pos=(129,30), href="rgb24-65x65.png", parent=root)
def fakeClick(self, x, y):
helper = player.getTestHelper()
helper.fakeMouseEvent(avg.Event.CURSOR_DOWN, True, False, False, x, y, 1)
helper.fakeMouseEvent(avg.Event.CURSOR_UP, False, False, False, x, y, 1)
def skip(self, message):
self.__skipReason = str(message)
sys.stderr.write("skipping: " + str(message) + " ... ")
self.__skipped = True
def skipped(self):
return self.__skipped
def skipReason(self):
return self.__skipReason
def skipIfMinimalShader(self):
if not(player.areFullShadersSupported()):
self.skip("Not supported if ShaderUsage == MINIMAL")
player.stop()
return
def _sendMouseEvent(self, type, x, y, btn=1):
if not self.__mouseEmulator:
self.__mouseEmulator = MouseEmulator()
self.__mouseEmulator.sendMouseEvent(type, x, y, btn)
def _sendTouchEvent(self, id, type, x, y):
helper = player.getTestHelper()
helper.fakeTouchEvent(id, type, avg.Event.TOUCH, avg.Point2D(x, y))
def _sendTouchEvents(self, eventData):
helper = player.getTestHelper()
for (id, type, x, y) in eventData:
helper.fakeTouchEvent(id, type, avg.Event.TOUCH, avg.Point2D(x, y))
def _genMouseEventFrames(self, type, x, y, expectedEvents):
return [
lambda: self._sendMouseEvent(type, x, y),
lambda: self.messageTester.assertState(expectedEvents),
]
def _genTouchEventFrames(self, eventData, expectedEvents):
return [
lambda: self._sendTouchEvents(eventData),
lambda: self.messageTester.assertState(expectedEvents),
]
def _isCurrentDirWriteable(self):
return bool(os.access('.', os.W_OK))
def __nextAction(self):
if not(self.__delaying):
if self.__dumpTestFrames:
self.__logger.log("Frame "+str(self.curFrame))
if len(self.actions) == self.curFrame:
player.stop()
else:
action = self.actions[self.curFrame]
if action != None:
action()
self.curFrame += 1
def createAVGTestSuite(availableTests, AVGTestCaseClass, testSubset):
testNames = []
if testSubset:
for testName in testSubset:
if testName in availableTests:
testNames.append(testName)
else:
sys.stderr.write(("No test named %s"%testName) + "\n")
sys.exit(1)
else:
testNames = availableTests
suite = unittest.TestSuite()
for testName in testNames:
suite.addTest(AVGTestCaseClass(testName))
return suite
class NodeHandlerTester(object):
def __init__(self, testCase, node):
self.__testCase = testCase
self.reset()
self.__node = node
self.__subscriberIDs = set()
self.setHandlers()
self.__messagesReceived = set()
def assertState(self, expectedMessages):
self.__testCase.assert_(self.isState(expectedMessages))
self.reset()
def isState(self, expectedMessages):
expectedMessages = set(expectedMessages)
if expectedMessages != self.__messagesReceived:
sys.stderr.write("\nState expected: "+str(expectedMessages)+"\n")
sys.stderr.write("Actual state: "+str(self.__messagesReceived)+"\n")
return False
else:
return True
def reset(self):
self.__messagesReceived = set()
def setHandlers(self):
messageIDs = [avg.Node.CURSOR_DOWN, avg.Node.CURSOR_UP, avg.Node.CURSOR_OVER,
avg.Node.CURSOR_OUT, avg.Node.CURSOR_MOTION]
for messageID in messageIDs:
subscriberID = self.__node.subscribe(messageID,
lambda event, messageID=messageID:
self.setMessageReceived(messageID, event))
self.__subscriberIDs.add(subscriberID)
def clearHandlers(self):
for subscriber in self.__subscriberIDs:
self.__node.unsubscribe(subscriber)
self.__subscriberIDs = set()
def setMessageReceived(self, messageID, event):
self.__messagesReceived.add(messageID)
class MessageTester(object):
def __init__(self, publisher, messageIDs, testCase=None):
for messageID in messageIDs:
publisher.subscribe(messageID,
lambda messageID=messageID: self.setMessageReceived(messageID))
self.__messagesReceived = set()
self.__testCase = testCase
def assertState(self, expectedMessages):
self.__testCase.assert_(self.isState(expectedMessages))
self.reset()
def isState(self, expectedMessages):
expectedMessages = set(expectedMessages)
if expectedMessages != self.__messagesReceived:
sys.stderr.write("\nState expected: "+str(expectedMessages)+"\n")
sys.stderr.write("Actual state: "+str(self.__messagesReceived)+"\n")
return False
else:
return True
def setMessageReceived(self, messageID):
self.__messagesReceived.add(messageID)
def reset(self):
self.__messagesReceived = set()
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