print('testing a short string `hi`...')

print('hi')

print( ['X', 'Y', 'Z'] )

s = 'x y z'

print( s.split(' ') )

m = '''line1

line2

line3'''

print( m.splitlines() )

if not s.startswith('x'):

raise RuntimeError('string.startswith test failed')

else:

print('startswith test OK')

if not s.endswith('z'):

raise RuntimeError('string.endswith test failed')

else:

print('endswith test OK')

a = 'a%sb%sc'

b = 'foo-bar'

print(a * 5)

print( a %("FOO", "BAR") )

abc = ','.join(['A', 'B', 'C'])

print( abc )

print( abc.replace(',', '_') )

cba = abc.reverse()

print(cba)

ln = ' '

for c in ln:

if c==' ':

continue

else:

print('long line of spaces failed')

assert 0

## in regular python the following would fail, but in tpython it is allowed ##

print( a % b )

print( a %([1,2], {'mykey':'myvalue'}) )

## 4bit strings can be up to 24 chars long, and can only contain: `ABCD!$%&*+-=?@_`

print('testing 4bit strings')

e = 'ABCD!$%&*+-=?@____'

print(e)

assert e[0] == 'A'

assert e[1] == 'B'

assert e[2] == 'C'

assert e[3] == 'D'

assert e[4] == '!'

assert e[5] == '$'

assert e[6] == '%'

assert e[7] == '&'

assert e[8] == '*'

assert e[9] == '+'

assert e[10] == '-'

assert e[11] == '='

assert e[12] == '?'

assert e[13] == '@'

assert e[14] == '_'

print("OK")