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#!/usr/bin/env python
# -*- coding: utf-8 -*-
import unittest
import glob
from . import helper
from .mockable_test_result import MockableTestResult
from runner import path_to_enlightenment
from libs.colorama import init, Fore, Style
init() # init colorama
class Sensei(MockableTestResult):
    def __init__(self, stream):
        unittest.TestResult.__init__(self)
        self.stream = stream
        self.prevTestClassName = None
        self.tests = path_to_enlightenment.koans()
        self.pass_count = 0
        self.lesson_pass_count  = 0
        self.all_lessons = None
    def startTest(self, test):
        MockableTestResult.startTest(self, test)
        if helper.cls_name(test) != self.prevTestClassName:
            self.prevTestClassName = helper.cls_name(test)
            if not self.failures:
                self.stream.writeln()
                self.stream.writeln("{0}{1}Thinking {2}".format(
                    Fore.RESET, Style.NORMAL, helper.cls_name(test)))
                if helper.cls_name(test) != 'AboutAsserts':
                    self.lesson_pass_count += 1
    def addSuccess(self, test):
        if self.passesCount():
            MockableTestResult.addSuccess(self, test)
            self.stream.writeln( \
                "  {0}{1}{2} has expanded your awareness.{3}{4}" \
                .format(Fore.GREEN, Style.BRIGHT, test._testMethodName, \
                Fore.RESET, Style.NORMAL))
            self.pass_count += 1
    def addError(self, test, err):
        # Having 1 list for errors and 1 list for failures would mess with
        # the error sequence
        self.addFailure(test, err)
    def passesCount(self):
        return not (self.failures and helper.cls_name(self.failures[0][0]) != self.prevTestClassName)
    def addFailure(self, test, err):
        MockableTestResult.addFailure(self, test, err)
    def sortFailures(self, testClassName):
        table = list()
        for test, err in self.failures:
            if helper.cls_name(test) ==  testClassName:
                m = re.search("(?<= line )\d+" ,err)
                    tup = (int(m.group(0)), test, err)
                    table.append(tup)
        if table:
            return sorted(table)
        else:
            return None
    def firstFailure(self):
        if not self.failures: return None
        table = self.sortFailures(helper.cls_name(self.failures[0][0]))
        if table:
            return (table[0][1], table[0][2])
        else:
            return None
    def learn(self):
        self.errorReport()
        self.stream.writeln("")
        self.stream.writeln("")
        self.stream.writeln(self.report_progress())
        self.stream.writeln("")
        self.stream.writeln(self.say_something_zenlike())
        if self.failures: sys.exit(-1)
        self.stream.writeln(
            "\n{0}**************************************************" \
            .format(Fore.RESET))
        self.stream.writeln("\n{0}That was the last one, well done!" \
            .format(Fore.MAGENTA))
        self.stream.writeln(
            "\nIf you want more, take a look at about_extra_credit_task.py{0}{1}" \
            .format(Fore.RESET, Style.NORMAL))
    def errorReport(self):
        problem = self.firstFailure()
        if not problem: return
        test, err = problem
        self.stream.writeln("  {0}{1}{2} has damaged your "
          "karma.".format(Fore.RED, Style.BRIGHT, test._testMethodName))
        self.stream.writeln("\n{0}{1}You have not yet reached enlightenment ..." \
            .format(Fore.RESET, Style.NORMAL))
        self.stream.writeln("{0}{1}{2}".format(Fore.RED, \
            Style.BRIGHT, self.scrapeAssertionError(err)))
        self.stream.writeln("")
        self.stream.writeln("{0}{1}Please meditate on the following code:" \
            .format(Fore.RESET, Style.NORMAL))
        self.stream.writeln("{0}{1}{2}{3}{4}".format(Fore.YELLOW, Style.BRIGHT, \
            self.scrapeInterestingStackDump(err), Fore.RESET, Style.NORMAL))
    def scrapeAssertionError(self, err):
        if not err: return ""
        error_text = ""
        count = 0
        for line in err.splitlines():
            m = re.search("^[^^ ].*$",line)
            if m and m.group(0):
                count+=1
            if count>1:
                error_text += ("  " + line.strip()).rstrip() + '\n'
        return error_text.strip('\n')
    def scrapeInterestingStackDump(self, err):
        if not err:
            return ""
        lines = err.splitlines()
        sep = '@@@@@SEP@@@@@'
        scrape = ""
        for line in lines:
            m = re.search("^  File .*$",line)
            if m and m.group(0):
                scrape += '\n' + line
            m = re.search("^    \w(\w)+.*$",line)
            if m and m.group(0):
                scrape += sep + line
        lines = scrape.splitlines()
        scrape = ""
        for line in lines:
            m = re.search("^.*[/\\\\]koans[/\\\\].*$",line)
            if m and m.group(0):
                scrape += line + '\n'
        return scrape.replace(sep, '\n').strip('\n')
    def report_progress(self):
        koans_complete = self.pass_count
        lessons_complete = self.lesson_pass_count
        koans_remaining = self.total_koans() - koans_complete
        lessons_remaining = self.total_lessons() - lessons_complete
        sent1 = "You have completed {0} koans and " \
                "{1} lessons.\n".format(koans_complete, lessons_complete)
        sent2 = "You are now {0} koans and {1} lessons away from " \
                "reaching enlightenment.".format(koans_remaining, lessons_remaining)
        return sent1+sent2
    # Hat's tip to Tim Peters for the zen statements from The 'Zen
    # of Python' (http://www.python.org/dev/peps/pep-0020/)
    # Also a hat's tip to Ara T. Howard for the zen statements from his
    # metakoans Ruby Quiz (http://rubyquiz.com/quiz67.html) and
    # Edgecase's later permutation in the Ruby Koans
    def say_something_zenlike(self):
        if self.failures:
            turn = self.pass_count % 37
            zenness = "";
            if turn == 0:
                zenness = "Beautiful is better than ugly."
            elif turn == 1 or turn == 2:
                zenness = "Explicit is better than implicit."
            elif turn == 3 or turn == 4:
                zenness = "Simple is better than complex."
            elif turn == 5 or turn == 6:
                zenness = "Complex is better than complicated."
            elif turn == 7 or turn == 8:
                zenness = "Flat is better than nested."
            elif turn == 9 or turn == 10:
                zenness = "Sparse is better than dense."
            elif turn == 11 or turn == 12:
                zenness = "Readability counts."
            elif turn == 13 or turn == 14:
                zenness = "Special cases aren't special enough to " \
                          "break the rules."
            elif turn == 15 or turn == 16:
                zenness = "Although practicality beats purity."
            elif turn == 17 or turn == 18:
                zenness = "Errors should never pass silently."
            elif turn == 19 or turn == 20:
                zenness = "Unless explicitly silenced."
            elif turn == 21 or turn == 22:
                zenness = "In the face of ambiguity, refuse the " \
                          "temptation to guess."
            elif turn == 23 or turn == 24:
                zenness = "There should be one-- and preferably only " \
                          "one --obvious way to do it."
            elif turn == 25 or turn == 26:
                zenness = "Although that way may not be obvious at " \
                          "first unless you're Dutch."
            elif turn == 27 or turn == 28:
                zenness = "Now is better than never."
            elif turn == 29 or turn == 30:
                zenness = "Although never is often better than right " \
            elif turn == 31 or turn == 32:
                zenness = "If the implementation is hard to explain, " \
                          "it's a bad idea."
            elif turn == 33 or turn == 34:
                zenness = "If the implementation is easy to explain, " \
                          "it may be a good idea."
            else:
                zenness = "Namespaces are one honking great idea -- " \
                          "let's do more of those!"
            return "{0}{1}{2}{3}".format(Fore.CYAN, zenness, Fore.RESET, Style.NORMAL);
        else:
            return "{0}Nobody ever expects the Spanish Inquisition." \
                .format(Fore.CYAN)
        # Hopefully this will never ever happen!
        return "The temple is collapsing! Run!!!"
    def total_lessons(self):
        all_lessons = self.filter_all_lessons()
        if all_lessons:
          return len(all_lessons)
        else:
          return 0
    def total_koans(self):
        return self.tests.countTestCases()
    def filter_all_lessons(self):
        cur_dir = os.path.split(os.path.realpath(__file__))[0]
        if not self.all_lessons:
            self.all_lessons = glob.glob('{0}/../koans/about*.py'.format(cur_dir))
            self.all_lessons = list(filter(lambda filename:
                                      "about_extra_credit" not in filename,
                                      self.all_lessons))
        return self.all_lessons
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