import os

import time

class mocktime:

    def __init__(self, increment):

        self.time = 0

        self.increment = [float(s) for s in increment.split()]

        self.pos = 0

    def __call__(self):

        self.time += self.increment[self.pos % len(self.increment)]

        self.pos += 1

        return self.time

def uisetup(ui):

    time.time = mocktime(os.environ.get('MOCKTIME', '0.1'))