tests/corelib/integer_to_string_test.dart - Issue 2997533002: Migrate test block 10 to Dart 2.0.

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Issue 2997533002: Migrate test block 10 to Dart 2.0. (Closed)

Patch Set: Fix remaining cases Created 3 years, 4 months ago

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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file

2 // for details. All rights reserved. Use of this source code is governed by a

3 // BSD-style license that can be found in the LICENSE file.

4

5 import "package:expect/expect.dart";

6

7 main() {

8 /// Test that converting [value] to a string gives [expect].

9 /// Also test that `-value` gives `"-"+expect`.

10 test(int value, String expect) {

11 Expect.equals(expect, value.toString());

12 Expect.equals(expect, "$value");

13 Expect.equals(expect, (new StringBuffer()..write(value)).toString());

14 if (value == 0) return;

15 expect = "-$expect";

16 value = -value;

17 Expect.equals(expect, value.toString());

18 Expect.equals(expect, "$value");

19 Expect.equals(expect, (new StringBuffer()..write(value)).toString());

20 }

21

22 // Very simple tests.

23 test(0, "0");

24 test(1, "1");

25 test(2, "2");

26 test(5, "5");

27

28 // Binary special cases.

29

30 // ~2^30.

31 test(0x3fffffff, "1073741823");

32 test(0x40000000, "1073741824");

33 test(0x40000001, "1073741825");

34 // ~2^31.

35 test(0x7fffffff, "2147483647");

36 test(0x80000000, "2147483648");

37 test(0x80000001, "2147483649");

38 // ~2^32.

39 test(0xffffffff, "4294967295");

40 test(0x100000000, "4294967296");

41 test(0x100000001, "4294967297");

42

43 // ~2^51.

44 test(0x7ffffffffffff, "2251799813685247");

45 test(0x8000000000000, "2251799813685248");

46 test(0x8000000000001, "2251799813685249");

47 // ~2^52.

48 test(0xfffffffffffff, "4503599627370495");

49 test(0x10000000000000, "4503599627370496");

50 test(0x10000000000001, "4503599627370497");

51 // ~2^53.

52 test(0x1fffffffffffff, "9007199254740991");

53 test(0x20000000000000, "9007199254740992");

54 test(0x20000000000001, "9007199254740993"); // //# 01: ok

55 // ~2^62.

56 test(0x3fffffffffffffff, "4611686018427387903"); // //# 01: continued

57 test(0x4000000000000000, "4611686018427387904"); // //# 01: continued

58 test(0x4000000000000001, "4611686018427387905"); // //# 01: continued

59 // ~2^63.

60 test(0x7fffffffffffffff, "9223372036854775807"); // //# 01: continued

61 test(0x8000000000000000, "9223372036854775808"); // //# 01: continued

62 test(0x8000000000000001, "9223372036854775809"); // //# 01: continued

63 // ~2^64.

64 test(0xffffffffffffffff, "18446744073709551615"); // //# 01: continued

65 test(0x10000000000000000, "18446744073709551616"); // //# 01: continued

66 test(0x10000000000000001, "18446744073709551617"); // //# 01: continued

67 // Big bignum.

68 test(123456789012345678901234567890, // //# 01: continued

69 "123456789012345678901234567890"); // //# 01: continued

70

71 // Decimal special cases.

72

73 int number = 10;

74 // Numbers 99..99, 100...00, and 100..01 up to 23 digits.

75 for (int i = 1; i < 15; i++) {

76 // Works in dart2js up to 10^15.

77 test(number - 1, "9" * i);

78 test(number, "1" + "0" * i);

79 test(number + 1, "1" + "0" * (i - 1) + "1");

80 number *= 10;

81 }

82 // Fails to represent exactly in dart2js.

83 for (int i = 15; i < 22; i++) { // //# 01: continued

84 test(number - 1, "9" * i); // //# 01: continued

85 test(number, "1" + "0" * i); // //# 01: continued

86 test(number + 1, "1" + "0" * (i - 1) + "1"); // //# 01: continued

87 number *= 10; // //# 01: continued

88 } // //# 01: continued

89 }

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