import hotshot, hotshot.stats

import sys
import warnings
import unittest
import os
import tempfile

from tables import *
# Next imports are only necessary for this test suite
from tables import Group, Leaf, Table, Array

verbose = 0

class WideTreeTestCase(unittest.TestCase):
    """Checks for maximum number of childs for a Group.
    
    
    """
    def test00_Leafs(self):
        """Checking creation of large number of leafs (1024) per group 
        
        Variable 'maxchilds' controls this check. PyTables support
        up to 4096 childs per group, but this would take too much
        memory (up to 64 MB) for testing purposes (may be we can add a
        test for big platforms). A 1024 childs run takes up to 30 MB.
        A 512 childs test takes around 25 MB.
        
        """

        import time
        maxchilds = 1000
        if verbose:
            print '\n', '-=' * 30
            print "Running %s.test00_wideTree..." % \
                  self.__class__.__name__
            print "Maximum number of childs tested :", maxchilds
        # Open a new empty HDF5 file
        file = tempfile.mktemp(".h5")
        #file = "test_widetree.h5"

        fileh = openFile(file, mode = "w")
        if verbose:
            print "Children writing progress: ",
        for child in range(maxchilds):
            if verbose:
                print "%3d," % (child),
            a = [1, 1]
            fileh.createGroup(fileh.root, 'group' + str(child),
                              "child: %d" % child)
            fileh.createArray("/group" + str(child), 'array' + str(child),
                              a, "child: %d" % child)
        if verbose:
            print
        # Close the file
        fileh.close()

        t1 = time.time()
        # Open the previous HDF5 file in read-only mode
        fileh = openFile(file, mode = "r")
        print "\nTime spent opening a file with %d groups + %d arrays: %s s" % \
              (maxchilds, maxchilds, time.time()-t1)
        if verbose:
            print "\nChildren reading progress: ",
        # Close the file
        fileh.close()
        # Then, delete the file
        os.remove(file)
        
    def test01_wideTree(self):
        """Checking creation of large number of groups (1024) per group 
        
        Variable 'maxchilds' controls this check. PyTables support
        up to 4096 childs per group, but this would take too much
        memory (up to 64 MB) for testing purposes (may be we can add a
        test for big platforms). A 1024 childs run takes up to 30 MB.
        A 512 childs test takes around 25 MB.
        
        """

        import time
        maxchilds = 1000
        if verbose:
            print '\n', '-=' * 30
            print "Running %s.test00_wideTree..." % \
                  self.__class__.__name__
            print "Maximum number of childs tested :", maxchilds
        # Open a new empty HDF5 file
        file = tempfile.mktemp(".h5")
        #file = "test_widetree.h5"

        fileh = openFile(file, mode = "w")
        if verbose:
            print "Children writing progress: ",
        for child in range(maxchilds):
            if verbose:
                print "%3d," % (child),
            fileh.createGroup(fileh.root, 'group' + str(child),
                              "child: %d" % child)
        if verbose:
            print
        # Close the file
        fileh.close()

        t1 = time.time()
        # Open the previous HDF5 file in read-only mode
        fileh = openFile(file, mode = "r")
        print "\nTime spent opening a file with %d groups: %s s" % \
              (maxchilds, time.time()-t1)
        # Close the file
        fileh.close()
        # Then, delete the file
        os.remove(file)
        
#----------------------------------------------------------------------

def suite():
    theSuite = unittest.TestSuite()
    theSuite.addTest(unittest.makeSuite(WideTreeTestCase))

    return theSuite


if __name__ == '__main__':
    prof = hotshot.Profile("widetree.prof")
    benchtime, stones = prof.runcall(unittest.main(defaultTest='suite'))
    prof.close()
    stats = hotshot.stats.load("widetree.prof")
    stats.strip_dirs()
    stats.sort_stats('time', 'calls')
    stats.print_stats(20)
    
