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How to use testDescription method in PyHamcrest

Best Python code snippet using PyHamcrest_python
regressions.py
Source:regressions.py
1#!/usr/bin/python -u2import glob, os, string, sys, thread, time3# import difflib4import libxml25###6#7# This is a "Work in Progress" attempt at a python script to run the8# various regression tests.  The rationale for this is that it should be9# possible to run this on most major platforms, including those (such as10# Windows) which don't support gnu Make.11#12# The script is driven by a parameter file which defines the various tests13# to be run, together with the unique settings for each of these tests.  A14# script for Linux is included (regressions.xml), with comments indicating15# the significance of the various parameters.  To run the tests under Windows,16# edit regressions.xml and remove the comment around the default parameter17# "<execpath>" (i.e. make it point to the location of the binary executables).18#19# Note that this current version requires the Python bindings for libxml2 to20# have been previously installed and accessible21#22# See Copyright for the status of this software.23# William Brack (wbrack@mmm.com.hk)24#25###26defaultParams = {}	# will be used as a dictionary to hold the parsed params27# This routine is used for comparing the expected stdout / stdin with the results.28# The expected data has already been read in; the result is a file descriptor.29# Within the two sets of data, lines may begin with a path string.  If so, the30# code "relativises" it by removing the path component.  The first argument is a31# list already read in by a separate thread; the second is a file descriptor.32# The two 'base' arguments are to let me "relativise" the results files, allowing33# the script to be run from any directory.34def compFiles(res, expected, base1, base2):35    l1 = len(base1)36    exp = expected.readlines()37    expected.close()38    # the "relativisation" is done here39    for i in range(len(res)):40        j = string.find(res[i],base1)41        if (j == 0) or ((j == 2) and (res[i][0:2] == './')):42            col = string.find(res[i],':')43            if col > 0:44                start = string.rfind(res[i][:col], '/')45                if start > 0:46                    res[i] = res[i][start+1:]47    for i in range(len(exp)):48        j = string.find(exp[i],base2)49        if (j == 0) or ((j == 2) and (exp[i][0:2] == './')):50            col = string.find(exp[i],':')51            if col > 0:52                start = string.rfind(exp[i][:col], '/')53                if start > 0:54                    exp[i] = exp[i][start+1:]55    ret = 056    # ideally we would like to use difflib functions here to do a57    # nice comparison of the two sets.  Unfortunately, during testing58    # (using python 2.3.3 and 2.3.4) the following code went into59    # a dead loop under windows.  I'll pursue this later.60#    diff = difflib.ndiff(res, exp)61#    diff = list(diff)62#    for line in diff:63#        if line[:2] != '  ':64#            print string.strip(line)65#            ret = -166    # the following simple compare is fine for when the two data sets67    # (actual result vs. expected result) are equal, which should be true for68    # us.  Unfortunately, if the test fails it's not nice at all.69    rl = len(res)70    el = len(exp)71    if el != rl:72        print 'Length of expected is %d, result is %d' % (el, rl)73	ret = -174    for i in range(min(el, rl)):75        if string.strip(res[i]) != string.strip(exp[i]):76            print '+:%s-:%s' % (res[i], exp[i])77            ret = -178    if el > rl:79        for i in range(rl, el):80            print '-:%s' % exp[i]81            ret = -182    elif rl > el:83        for i in range (el, rl):84            print '+:%s' % res[i]85            ret = -186    return ret87# Separate threads to handle stdout and stderr are created to run this function88def readPfile(file, list, flag):89    data = file.readlines()	# no call by reference, so I cheat90    for l in data:91        list.append(l)92    file.close()93    flag.append('ok')94# This routine runs the test program (e.g. xmllint)95def runOneTest(testDescription, filename, inbase, errbase):96    if 'execpath' in testDescription:97        dir = testDescription['execpath'] + '/'98    else:99        dir = ''100    cmd = os.path.abspath(dir + testDescription['testprog'])101    if 'flag' in testDescription:102        for f in string.split(testDescription['flag']):103            cmd += ' ' + f104    if 'stdin' not in testDescription:105        cmd += ' ' + inbase + filename106    if 'extarg' in testDescription:107        cmd += ' ' + testDescription['extarg']108    noResult = 0109    expout = None110    if 'resext' in testDescription:111        if testDescription['resext'] == 'None':112            noResult = 1113        else:114            ext = '.' + testDescription['resext']115    else:116        ext = ''117    if not noResult:118        try:119            fname = errbase + filename + ext120            expout = open(fname, 'rt')121        except:122            print "Can't open result file %s - bypassing test" % fname123            return124    noErrors = 0125    if 'reserrext' in testDescription:126        if testDescription['reserrext'] == 'None':127            noErrors = 1128        else:129            if len(testDescription['reserrext'])>0:130                ext = '.' + testDescription['reserrext']131            else:132                ext = ''133    else:134        ext = ''135    if not noErrors:136        try:137            fname = errbase + filename + ext138            experr = open(fname, 'rt')139        except:140            experr = None141    else:142        experr = None143    pin, pout, perr = os.popen3(cmd)144    if 'stdin' in testDescription:145        infile = open(inbase + filename, 'rt')146        pin.writelines(infile.readlines())147        infile.close()148        pin.close()149    # popen is great fun, but can lead to the old "deadly embrace", because150    # synchronizing the writing (by the task being run) of stdout and stderr151    # with respect to the reading (by this task) is basically impossible.  I152    # tried several ways to cheat, but the only way I have found which works153    # is to do a *very* elementary multi-threading approach.  We can only hope154    # that Python threads are implemented on the target system (it's okay for155    # Linux and Windows)156    th1Flag = []	# flags to show when threads finish157    th2Flag = []158    outfile = []	# lists to contain the pipe data159    errfile = []160    th1 = thread.start_new_thread(readPfile, (pout, outfile, th1Flag))161    th2 = thread.start_new_thread(readPfile, (perr, errfile, th2Flag))162    while (len(th1Flag)==0) or (len(th2Flag)==0):163        time.sleep(0.001)164    if not noResult:165        ret = compFiles(outfile, expout, inbase, 'test/')166        if ret != 0:167            print 'trouble with %s' % cmd168    else:169        if len(outfile) != 0:170            for l in outfile:171                print l172            print 'trouble with %s' % cmd173    if experr != None:174        ret = compFiles(errfile, experr, inbase, 'test/')175        if ret != 0:176            print 'trouble with %s' % cmd177    else:178        if not noErrors:179            if len(errfile) != 0:180                for l in errfile:181                    print l182                print 'trouble with %s' % cmd183    if 'stdin' not in testDescription:184        pin.close()185# This routine is called by the parameter decoding routine whenever the end of a186# 'test' section is encountered.  Depending upon file globbing, a large number of187# individual tests may be run.188def runTest(description):189    testDescription = defaultParams.copy()		# set defaults190    testDescription.update(description)			# override with current ent191    if 'testname' in testDescription:192        print "## %s" % testDescription['testname']193    if not 'file' in testDescription:194        print "No file specified - can't run this test!"195        return196    # Set up the source and results directory paths from the decoded params197    dir = ''198    if 'srcdir' in testDescription:199        dir += testDescription['srcdir'] + '/'200    if 'srcsub' in testDescription:201        dir += testDescription['srcsub'] + '/'202    rdir = ''203    if 'resdir' in testDescription:204        rdir += testDescription['resdir'] + '/'205    if 'ressub' in testDescription:206        rdir += testDescription['ressub'] + '/'207    testFiles = glob.glob(os.path.abspath(dir + testDescription['file']))208    if testFiles == []:209        print "No files result from '%s'" % testDescription['file']210        return211    # Some test programs just don't work (yet).  For now we exclude them.212    count = 0213    excl = []214    if 'exclfile' in testDescription:215        for f in string.split(testDescription['exclfile']):216            glb = glob.glob(dir + f)217            for g in glb:218                excl.append(os.path.abspath(g))219    # Run the specified test program220    for f in testFiles:221        if not os.path.isdir(f):222            if f not in excl:223                count = count + 1224                runOneTest(testDescription, os.path.basename(f), dir, rdir)225#226# The following classes are used with the xmlreader interface to interpret the227# parameter file.  Once a test section has been identified, runTest is called228# with a dictionary containing the parsed results of the interpretation.229#230class testDefaults:231    curText = ''	# accumulates text content of parameter232    def addToDict(self, key):233        txt = string.strip(self.curText)234#        if txt == '':235#            return236        if key not in defaultParams:237            defaultParams[key] = txt238        else:239            defaultParams[key] += ' ' + txt240        241    def processNode(self, reader, curClass):242        if reader.Depth() == 2:243            if reader.NodeType() == 1:244                self.curText = ''	# clear the working variable245            elif reader.NodeType() == 15:246                if (reader.Name() != '#text') and (reader.Name() != '#comment'):247                    self.addToDict(reader.Name())248        elif reader.Depth() == 3:249            if reader.Name() == '#text':250                self.curText += reader.Value()251        elif reader.NodeType() == 15:	# end of element252            print "Defaults have been set to:"253            for k in defaultParams.keys():254                print "   %s : '%s'" % (k, defaultParams[k])255            curClass = rootClass()256        return curClass257class testClass:258    def __init__(self):259        self.testParams = {}	# start with an empty set of params260        self.curText = ''	# and empty text261    def addToDict(self, key):262        data = string.strip(self.curText)263        if key not in self.testParams:264            self.testParams[key] = data265        else:266            if self.testParams[key] != '':267                data = ' ' + data268            self.testParams[key] += data269    def processNode(self, reader, curClass):270        if reader.Depth() == 2:271            if reader.NodeType() == 1:272                self.curText = ''	# clear the working variable273                if reader.Name() not in self.testParams:274                    self.testParams[reader.Name()] = ''275            elif reader.NodeType() == 15:276                if (reader.Name() != '#text') and (reader.Name() != '#comment'):277                    self.addToDict(reader.Name())278        elif reader.Depth() == 3:279            if reader.Name() == '#text':280                self.curText += reader.Value()281        elif reader.NodeType() == 15:	# end of element282            runTest(self.testParams)283            curClass = rootClass()284        return curClass285class rootClass:286    def processNode(self, reader, curClass):287        if reader.Depth() == 0:288            return curClass289        if reader.Depth() != 1:290            print "Unexpected junk: Level %d, type %d, name %s" % (291                  reader.Depth(), reader.NodeType(), reader.Name())292            return curClass293        if reader.Name() == 'test':294            curClass = testClass()295            curClass.testParams = {}296        elif reader.Name() == 'defaults':297            curClass = testDefaults()298        return curClass299def streamFile(filename):300    try:301        reader = libxml2.newTextReaderFilename(filename)302    except:303        print "unable to open %s" % (filename)304        return305    curClass = rootClass()306    ret = reader.Read()307    while ret == 1:308        curClass = curClass.processNode(reader, curClass)309        ret = reader.Read()310    if ret != 0:311        print "%s : failed to parse" % (filename)312# OK, we're finished with all the routines.  Now for the main program:-313if len(sys.argv) != 2:314    print "Usage: maketest {filename}"315    sys.exit(-1)...
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