#!/usr/bin/env python

from trunc import trunc

stars = '********************************************************'
orwell = 'When we are omnipotent we shall have no more need of science. \
There will be no distinction between beauty and ugliness. There will \
be no curiosity, no enjoyment of the process of life. All competing \
pleasures will be destroyed. But always - do not forget this, Winston \
- always there will be the intoxication of power, constantly increasing \
and constantly growing subtler. Always, at every moment, there will be \
the thrill of victory, the sensation of trampling on an enemy who is \
helpless. If you want a picture of the future, imagine a boot stamping \
on a human face - for ever."'

print 'Trunc tester'
print 'This script tests the trunc function'
print "Quote from Orwell's 1984"
print 'String used (ch.42): %s' % orwell
print stars
print

print 'Test: Truncate a long string using default settings'
print 'Truncated output: %s' % trunc(orwell)
print 'Length (should be 63): %i' % len(trunc(orwell))
print

print 'Test: Truncate using increased upper limit'
print 'Truncated output: %s' % trunc(orwell,max_pos=160)
print 'Length (should be 121): %i' % len(trunc(orwell,max_pos=160))
print

print 'Test: Truncate using increased upper limit without ellipsis'
print 'Truncated output: %s' % trunc(orwell,max_pos=160,ellipsis=False)
print 'Length (should be 118): %i' % len(trunc(orwell,max_pos=160,ellipsis=False))
print

print 'Test: Truncate using decreased upper limit (no period characters)'
print 'Truncated output: %s' % trunc(orwell,max_pos=55)
print 'Length (should be 55): %i' % len(trunc(orwell,max_pos=55))
print

print 'Test: Truncate when string passed is shorter than limit'
print 'Using substring as test: %s' % trunc(orwell,max_pos=25,ellipsis=False)
print 'Truncated output: %s' % trunc(trunc(orwell,max_pos=25,ellipsis=False))
print 'Length (should be 25): %i' % len(trunc(trunc(orwell,max_pos=25,ellipsis=False)))
print

print 'Test: Truncate between minimum and maximum values (force size)'
print 'Truncated output: %s' % trunc(orwell,min_pos=68,max_pos=74)
print 'Length (should be 75): %i' % len(trunc(orwell,min_pos=68,max_pos=74))
print

print 'Test: Force error condition (max value less than min value)'
try:
    print 'Truncated output: %s' % trunc(orwell,min_pos=75,max_pos=70)
    print 'Length: %i' % len(trunc(orwell,min_pos=75,max_pos=70))
except ValueError,e:
    print 'Pass. Caught exception ValueError: %s' % e
print

print 'Test: Force specific truncation (max==min)'
print 'Truncated output: %s' % trunc(orwell,min_pos=31,max_pos=31)
print 'Length (should be 34): %i' % len(trunc(orwell,min_pos=31,max_pos=31))
print