256         def check(expr, expected):  function
265         check('', '0')
266         check('8.2 + 6', '14.2')
267         check('3.1 + $a', '6.1')
268         check('2 + "$a.$b"', '5.6')
269         check('4*[llength "6 2"]', '8')
270         check('{word one} < "word $a"', '0')
271         check('4*2 < 7', '0')
272         check('hypot($a, 4)', '5.0')
273         check('5 / 4', '1')
274         check('5 / 4.0', '1.25')
275         check('5 / ( [string length "abcd"] + 0.0 )', '1.25')
276         check('20.0/5.0', '4.0')
277         check('"0x03" > "2"', '1')
278         check('[string length "a\xbd\u20ac"]', '3')
279         check(r'[string length "a\xbd\u20ac"]', '3')
280         check('"abc"', 'abc')
281         check('"a\xbd\u20ac"', 'a\xbd\u20ac')
282         check(r'"a\xbd\u20ac"', 'a\xbd\u20ac')
283         check(r'"a\0b"', 'a\x00b')
285             check('2**64', str(2**64))
291         def check(expr, expected):  function
300         check('', 0.0)
301         check('8.2 + 6', 14.2)
302         check('3.1 + $a', 6.1)
303         check('2 + "$a.$b"', 5.6)
304         check('4*[llength "6 2"]', 8.0)
305         check('{word one} < "word $a"', 0.0)
306         check('4*2 < 7', 0.0)
307         check('hypot($a, 4)', 5.0)
308         check('5 / 4', 1.0)
309         check('5 / 4.0', 1.25)
310         check('5 / ( [string length "abcd"] + 0.0 )', 1.25)
311         check('20.0/5.0', 4.0)
312         check('"0x03" > "2"', 1.0)
313         check('[string length "a\xbd\u20ac"]', 3.0)
314         check(r'[string length "a\xbd\u20ac"]', 3.0)
317             check('2**64', float(2**64))
323         def check(expr, expected):  function
332         check('', 0)
333         check('8.2 + 6', 14)
334         check('3.1 + $a', 6)
335         check('2 + "$a.$b"', 5)
336         check('4*[llength "6 2"]', 8)
337         check('{word one} < "word $a"', 0)
338         check('4*2 < 7', 0)
339         check('hypot($a, 4)', 5)
340         check('5 / 4', 1)
341         check('5 / 4.0', 1)
342         check('5 / ( [string length "abcd"] + 0.0 )', 1)
343         check('20.0/5.0', 4)
344         check('"0x03" > "2"', 1)
345         check('[string length "a\xbd\u20ac"]', 3)
346         check(r'[string length "a\xbd\u20ac"]', 3)
355         def check(expr, expected):  function
365         check('', False)
367             check(value, False)
368             check('"%s"' % value, False)
369             check('{%s}' % value, False)
371             check(value, True)
372             check('"%s"' % value, True)
373             check('{%s}' % value, True)
374         check('8.2 + 6', True)
375         check('3.1 + $a', True)
376         check('2 + "$a.$b"', True)
377         check('4*[llength "6 2"]', True)
378         check('{word one} < "word $a"', False)
379         check('4*2 < 7', False)
380         check('hypot($a, 4)', True)
381         check('5 / 4', True)
382         check('5 / 4.0', True)
383         check('5 / ( [string length "abcd"] + 0.0 )', True)
384         check('20.0/5.0', True)
385         check('"0x03" > "2"', True)
386         check('[string length "a\xbd\u20ac"]', True)
387         check(r'[string length "a\xbd\u20ac"]', True)
390             check('2**64', True)
395         def check(expr, expected):  function
403         check('true', True)
404         check('yes', True)
405         check('on', True)
406         check('false', False)
407         check('no', False)
408         check('off', False)
409         check('1 < 2', True)
410         check('1 > 2', False)
478         def check(value, expected=None, *, eq=self.assertEqual):  function
492         check(True, '1')
493         check(False, '0')
494         check('string')
495         check('string\xbd')
496         check('string\u20ac')
497         check('string\U0001f4bb')
498         check('')
499         check(b'string', 'string')
500         check(b'string\xe2\x82\xac', 'string\xe2\x82\xac')
501         check(b'string\xbd', 'string\xbd')
502         check(b'', '')
503         check('str\x00ing')
504         check('str\x00ing\xbd')
505         check('str\x00ing\u20ac')
506         check(b'str\x00ing', 'str\x00ing')
507         check(b'str\xc0\x80ing', 'str\xc0\x80ing')
508         check(b'str\xc0\x80ing\xe2\x82\xac', 'str\xc0\x80ing\xe2\x82\xac')
510             check(i, str(i))
512             check(2**1000, str(2**1000))
514             check(f, repr(f))
517             check(f, eq=float_eq)
518         check(float('inf'), eq=float_eq)
519         check(-float('inf'), eq=float_eq)
521         check((), '')
522         check((1, (2,), (3, 4), '5 6', ()), '1 2 {3 4} {5 6} {}')
523         check([1, [2,], [3, 4], '5 6', []], '1 2 {3 4} {5 6} {}')
667         def check(value):  function
674         check('')
675         check('spam')
676         check('sp am')
677         check('sp\tam')
678         check('sp\nam')
679         check(' \t\n')
680         check('{spam}')
681         check('{sp am}')
682         check('"spam"')
683         check('"sp am"')
684         check('{"spam"}')
685         check('"{spam}"')
686         check('sp\\am')
687         check('"sp\\am"')
688         check('"{}" "{}"')
689         check('"\\')
690         check('"{')
691         check('"}')
692         check('\n\\')
693         check('\n{')
694         check('\n}')
695         check('\\\n')
696         check('{\n')
697         check('}\n')