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478 lines
18 KiB
Python
478 lines
18 KiB
Python
#!/usr/bin/env python
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"""
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GUI framework and application for use with Python unit testing framework.
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Execute tests written using the framework provided by the 'unittest' module.
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Updated for unittest test discovery by Mark Roddy and Python 3
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support by Brian Curtin.
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Based on the original by Steve Purcell, from:
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http://pyunit.sourceforge.net/
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Copyright (c) 1999, 2000, 2001 Steve Purcell
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This module is free software, and you may redistribute it and/or modify
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it under the same terms as Python itself, so long as this copyright message
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and disclaimer are retained in their original form.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
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SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF
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THIS CODE, EVEN IF THE AUTHOR HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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DAMAGE.
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THE AUTHOR SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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PARTICULAR PURPOSE. THE CODE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS,
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AND THERE IS NO OBLIGATION WHATSOEVER TO PROVIDE MAINTENANCE,
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SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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"""
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__author__ = "Steve Purcell (stephen_purcell@yahoo.com)"
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import sys
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import traceback
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import unittest
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import tkinter as tk
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from tkinter import messagebox
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from tkinter import filedialog
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from tkinter import simpledialog
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##############################################################################
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# GUI framework classes
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##############################################################################
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class BaseGUITestRunner(object):
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"""Subclass this class to create a GUI TestRunner that uses a specific
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windowing toolkit. The class takes care of running tests in the correct
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manner, and making callbacks to the derived class to obtain information
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or signal that events have occurred.
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"""
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def __init__(self, *args, **kwargs):
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self.currentResult = None
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self.running = 0
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self.__rollbackImporter = None
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self.__rollbackImporter = RollbackImporter()
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self.test_suite = None
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#test discovery variables
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self.directory_to_read = ''
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self.top_level_dir = ''
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self.test_file_glob_pattern = 'test*.py'
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self.initGUI(*args, **kwargs)
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def errorDialog(self, title, message):
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"Override to display an error arising from GUI usage"
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pass
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def getDirectoryToDiscover(self):
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"Override to prompt user for directory to perform test discovery"
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pass
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def runClicked(self):
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"To be called in response to user choosing to run a test"
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if self.running: return
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if not self.test_suite:
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self.errorDialog("Test Discovery", "You discover some tests first!")
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return
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self.currentResult = GUITestResult(self)
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self.totalTests = self.test_suite.countTestCases()
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self.running = 1
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self.notifyRunning()
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self.test_suite.run(self.currentResult)
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self.running = 0
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self.notifyStopped()
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def stopClicked(self):
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"To be called in response to user stopping the running of a test"
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if self.currentResult:
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self.currentResult.stop()
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def discoverClicked(self):
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self.__rollbackImporter.rollbackImports()
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directory = self.getDirectoryToDiscover()
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if not directory:
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return
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self.directory_to_read = directory
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try:
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# Explicitly use 'None' value if no top level directory is
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# specified (indicated by empty string) as discover() explicitly
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# checks for a 'None' to determine if no tld has been specified
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top_level_dir = self.top_level_dir or None
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tests = unittest.defaultTestLoader.discover(directory, self.test_file_glob_pattern, top_level_dir)
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self.test_suite = tests
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except:
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exc_type, exc_value, exc_tb = sys.exc_info()
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traceback.print_exception(*sys.exc_info())
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self.errorDialog("Unable to run test '%s'" % directory,
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"Error loading specified test: %s, %s" % (exc_type, exc_value))
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return
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self.notifyTestsDiscovered(self.test_suite)
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# Required callbacks
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def notifyTestsDiscovered(self, test_suite):
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"Override to display information about the suite of discovered tests"
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pass
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def notifyRunning(self):
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"Override to set GUI in 'running' mode, enabling 'stop' button etc."
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pass
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def notifyStopped(self):
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"Override to set GUI in 'stopped' mode, enabling 'run' button etc."
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pass
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def notifyTestFailed(self, test, err):
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"Override to indicate that a test has just failed"
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pass
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def notifyTestErrored(self, test, err):
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"Override to indicate that a test has just errored"
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pass
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def notifyTestSkipped(self, test, reason):
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"Override to indicate that test was skipped"
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pass
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def notifyTestFailedExpectedly(self, test, err):
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"Override to indicate that test has just failed expectedly"
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pass
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def notifyTestStarted(self, test):
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"Override to indicate that a test is about to run"
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pass
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def notifyTestFinished(self, test):
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"""Override to indicate that a test has finished (it may already have
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failed or errored)"""
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pass
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class GUITestResult(unittest.TestResult):
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"""A TestResult that makes callbacks to its associated GUI TestRunner.
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Used by BaseGUITestRunner. Need not be created directly.
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"""
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def __init__(self, callback):
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unittest.TestResult.__init__(self)
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self.callback = callback
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def addError(self, test, err):
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unittest.TestResult.addError(self, test, err)
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self.callback.notifyTestErrored(test, err)
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def addFailure(self, test, err):
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unittest.TestResult.addFailure(self, test, err)
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self.callback.notifyTestFailed(test, err)
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def addSkip(self, test, reason):
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super(GUITestResult,self).addSkip(test, reason)
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self.callback.notifyTestSkipped(test, reason)
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def addExpectedFailure(self, test, err):
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super(GUITestResult,self).addExpectedFailure(test, err)
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self.callback.notifyTestFailedExpectedly(test, err)
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def stopTest(self, test):
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unittest.TestResult.stopTest(self, test)
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self.callback.notifyTestFinished(test)
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def startTest(self, test):
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unittest.TestResult.startTest(self, test)
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self.callback.notifyTestStarted(test)
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class RollbackImporter:
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"""This tricky little class is used to make sure that modules under test
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will be reloaded the next time they are imported.
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"""
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def __init__(self):
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self.previousModules = sys.modules.copy()
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def rollbackImports(self):
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for modname in sys.modules.copy().keys():
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if not modname in self.previousModules:
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# Force reload when modname next imported
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del(sys.modules[modname])
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##############################################################################
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# Tkinter GUI
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##############################################################################
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class DiscoverSettingsDialog(simpledialog.Dialog):
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"""
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Dialog box for prompting test discovery settings
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"""
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def __init__(self, master, top_level_dir, test_file_glob_pattern, *args, **kwargs):
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self.top_level_dir = top_level_dir
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self.dirVar = tk.StringVar()
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self.dirVar.set(top_level_dir)
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self.test_file_glob_pattern = test_file_glob_pattern
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self.testPatternVar = tk.StringVar()
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self.testPatternVar.set(test_file_glob_pattern)
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simpledialog.Dialog.__init__(self, master, title="Discover Settings",
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*args, **kwargs)
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def body(self, master):
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tk.Label(master, text="Top Level Directory").grid(row=0)
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self.e1 = tk.Entry(master, textvariable=self.dirVar)
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self.e1.grid(row = 0, column=1)
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tk.Button(master, text="...",
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command=lambda: self.selectDirClicked(master)).grid(row=0,column=3)
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tk.Label(master, text="Test File Pattern").grid(row=1)
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self.e2 = tk.Entry(master, textvariable = self.testPatternVar)
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self.e2.grid(row = 1, column=1)
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return None
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def selectDirClicked(self, master):
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dir_path = filedialog.askdirectory(parent=master)
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if dir_path:
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self.dirVar.set(dir_path)
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def apply(self):
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self.top_level_dir = self.dirVar.get()
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self.test_file_glob_pattern = self.testPatternVar.get()
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class TkTestRunner(BaseGUITestRunner):
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"""An implementation of BaseGUITestRunner using Tkinter.
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"""
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def initGUI(self, root, initialTestName):
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"""Set up the GUI inside the given root window. The test name entry
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field will be pre-filled with the given initialTestName.
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"""
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self.root = root
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self.statusVar = tk.StringVar()
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self.statusVar.set("Idle")
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#tk vars for tracking counts of test result types
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self.runCountVar = tk.IntVar()
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self.failCountVar = tk.IntVar()
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self.errorCountVar = tk.IntVar()
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self.skipCountVar = tk.IntVar()
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self.expectFailCountVar = tk.IntVar()
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self.remainingCountVar = tk.IntVar()
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self.top = tk.Frame()
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self.top.pack(fill=tk.BOTH, expand=1)
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self.createWidgets()
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def getDirectoryToDiscover(self):
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return filedialog.askdirectory()
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def settingsClicked(self):
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d = DiscoverSettingsDialog(self.top, self.top_level_dir, self.test_file_glob_pattern)
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self.top_level_dir = d.top_level_dir
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self.test_file_glob_pattern = d.test_file_glob_pattern
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def notifyTestsDiscovered(self, test_suite):
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discovered = test_suite.countTestCases()
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self.runCountVar.set(0)
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self.failCountVar.set(0)
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self.errorCountVar.set(0)
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self.remainingCountVar.set(discovered)
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self.progressBar.setProgressFraction(0.0)
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self.errorListbox.delete(0, tk.END)
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self.statusVar.set("Discovering tests from %s. Found: %s" %
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(self.directory_to_read, discovered))
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self.stopGoButton['state'] = tk.NORMAL
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def createWidgets(self):
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"""Creates and packs the various widgets.
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Why is it that GUI code always ends up looking a mess, despite all the
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best intentions to keep it tidy? Answers on a postcard, please.
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"""
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# Status bar
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statusFrame = tk.Frame(self.top, relief=tk.SUNKEN, borderwidth=2)
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statusFrame.pack(anchor=tk.SW, fill=tk.X, side=tk.BOTTOM)
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tk.Label(statusFrame, width=1, textvariable=self.statusVar).pack(side=tk.TOP, fill=tk.X)
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# Area to enter name of test to run
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leftFrame = tk.Frame(self.top, borderwidth=3)
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leftFrame.pack(fill=tk.BOTH, side=tk.LEFT, anchor=tk.NW, expand=1)
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suiteNameFrame = tk.Frame(leftFrame, borderwidth=3)
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suiteNameFrame.pack(fill=tk.X)
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# Progress bar
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progressFrame = tk.Frame(leftFrame, relief=tk.GROOVE, borderwidth=2)
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progressFrame.pack(fill=tk.X, expand=0, anchor=tk.NW)
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tk.Label(progressFrame, text="Progress:").pack(anchor=tk.W)
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self.progressBar = ProgressBar(progressFrame, relief=tk.SUNKEN,
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borderwidth=2)
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self.progressBar.pack(fill=tk.X, expand=1)
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# Area with buttons to start/stop tests and quit
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buttonFrame = tk.Frame(self.top, borderwidth=3)
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buttonFrame.pack(side=tk.LEFT, anchor=tk.NW, fill=tk.Y)
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tk.Button(buttonFrame, text="Discover Tests",
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command=self.discoverClicked).pack(fill=tk.X)
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self.stopGoButton = tk.Button(buttonFrame, text="Start",
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command=self.runClicked, state=tk.DISABLED)
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self.stopGoButton.pack(fill=tk.X)
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tk.Button(buttonFrame, text="Close",
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command=self.top.quit).pack(side=tk.BOTTOM, fill=tk.X)
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tk.Button(buttonFrame, text="Settings",
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command=self.settingsClicked).pack(side=tk.BOTTOM, fill=tk.X)
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# Area with labels reporting results
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for label, var in (('Run:', self.runCountVar),
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('Failures:', self.failCountVar),
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('Errors:', self.errorCountVar),
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('Skipped:', self.skipCountVar),
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('Expected Failures:', self.expectFailCountVar),
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('Remaining:', self.remainingCountVar),
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):
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tk.Label(progressFrame, text=label).pack(side=tk.LEFT)
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tk.Label(progressFrame, textvariable=var,
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foreground="blue").pack(side=tk.LEFT, fill=tk.X,
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expand=1, anchor=tk.W)
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# List box showing errors and failures
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tk.Label(leftFrame, text="Failures and errors:").pack(anchor=tk.W)
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listFrame = tk.Frame(leftFrame, relief=tk.SUNKEN, borderwidth=2)
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listFrame.pack(fill=tk.BOTH, anchor=tk.NW, expand=1)
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self.errorListbox = tk.Listbox(listFrame, foreground='red',
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selectmode=tk.SINGLE,
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selectborderwidth=0)
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self.errorListbox.pack(side=tk.LEFT, fill=tk.BOTH, expand=1,
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anchor=tk.NW)
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listScroll = tk.Scrollbar(listFrame, command=self.errorListbox.yview)
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listScroll.pack(side=tk.LEFT, fill=tk.Y, anchor=tk.N)
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self.errorListbox.bind("<Double-1>",
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lambda e, self=self: self.showSelectedError())
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self.errorListbox.configure(yscrollcommand=listScroll.set)
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def errorDialog(self, title, message):
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messagebox.showerror(parent=self.root, title=title,
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message=message)
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def notifyRunning(self):
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self.runCountVar.set(0)
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self.failCountVar.set(0)
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self.errorCountVar.set(0)
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self.remainingCountVar.set(self.totalTests)
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self.errorInfo = []
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while self.errorListbox.size():
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self.errorListbox.delete(0)
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#Stopping seems not to work, so simply disable the start button
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#self.stopGoButton.config(command=self.stopClicked, text="Stop")
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self.stopGoButton.config(state=tk.DISABLED)
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self.progressBar.setProgressFraction(0.0)
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self.top.update_idletasks()
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def notifyStopped(self):
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self.stopGoButton.config(state=tk.DISABLED)
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#self.stopGoButton.config(command=self.runClicked, text="Start")
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self.statusVar.set("Idle")
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def notifyTestStarted(self, test):
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self.statusVar.set(str(test))
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self.top.update_idletasks()
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def notifyTestFailed(self, test, err):
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self.failCountVar.set(1 + self.failCountVar.get())
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self.errorListbox.insert(tk.END, "Failure: %s" % test)
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self.errorInfo.append((test,err))
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def notifyTestErrored(self, test, err):
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self.errorCountVar.set(1 + self.errorCountVar.get())
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self.errorListbox.insert(tk.END, "Error: %s" % test)
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self.errorInfo.append((test,err))
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def notifyTestSkipped(self, test, reason):
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super(TkTestRunner, self).notifyTestSkipped(test, reason)
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self.skipCountVar.set(1 + self.skipCountVar.get())
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def notifyTestFailedExpectedly(self, test, err):
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super(TkTestRunner, self).notifyTestFailedExpectedly(test, err)
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self.expectFailCountVar.set(1 + self.expectFailCountVar.get())
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def notifyTestFinished(self, test):
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self.remainingCountVar.set(self.remainingCountVar.get() - 1)
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self.runCountVar.set(1 + self.runCountVar.get())
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fractionDone = float(self.runCountVar.get())/float(self.totalTests)
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fillColor = len(self.errorInfo) and "red" or "green"
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self.progressBar.setProgressFraction(fractionDone, fillColor)
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def showSelectedError(self):
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selection = self.errorListbox.curselection()
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if not selection: return
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selected = int(selection[0])
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txt = self.errorListbox.get(selected)
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window = tk.Toplevel(self.root)
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window.title(txt)
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window.protocol('WM_DELETE_WINDOW', window.quit)
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test, error = self.errorInfo[selected]
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tk.Label(window, text=str(test),
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foreground="red", justify=tk.LEFT).pack(anchor=tk.W)
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tracebackLines = traceback.format_exception(*error)
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tracebackText = "".join(tracebackLines)
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tk.Label(window, text=tracebackText, justify=tk.LEFT).pack()
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tk.Button(window, text="Close",
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command=window.quit).pack(side=tk.BOTTOM)
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window.bind('<Key-Return>', lambda e, w=window: w.quit())
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window.mainloop()
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window.destroy()
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class ProgressBar(tk.Frame):
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"""A simple progress bar that shows a percentage progress in
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the given colour."""
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def __init__(self, *args, **kwargs):
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tk.Frame.__init__(self, *args, **kwargs)
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self.canvas = tk.Canvas(self, height='20', width='60',
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background='white', borderwidth=3)
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self.canvas.pack(fill=tk.X, expand=1)
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self.rect = self.text = None
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self.canvas.bind('<Configure>', self.paint)
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self.setProgressFraction(0.0)
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def setProgressFraction(self, fraction, color='blue'):
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self.fraction = fraction
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self.color = color
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self.paint()
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self.canvas.update_idletasks()
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def paint(self, *args):
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totalWidth = self.canvas.winfo_width()
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width = int(self.fraction * float(totalWidth))
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height = self.canvas.winfo_height()
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if self.rect is not None: self.canvas.delete(self.rect)
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if self.text is not None: self.canvas.delete(self.text)
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self.rect = self.canvas.create_rectangle(0, 0, width, height,
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fill=self.color)
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percentString = "%3.0f%%" % (100.0 * self.fraction)
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self.text = self.canvas.create_text(totalWidth/2, height/2,
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anchor=tk.CENTER,
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text=percentString)
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def main(initialTestName=""):
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root = tk.Tk()
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root.title("PyUnit")
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runner = TkTestRunner(root, initialTestName)
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root.protocol('WM_DELETE_WINDOW', root.quit)
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root.mainloop()
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if __name__ == '__main__':
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if len(sys.argv) == 2:
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main(sys.argv[1])
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else:
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main()
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