Index: test/codegen/corelib/integer_to_string_test.dart |
diff --git a/test/codegen/corelib/integer_to_string_test.dart b/test/codegen/corelib/integer_to_string_test.dart |
new file mode 100644 |
index 0000000000000000000000000000000000000000..e6f94ed7b97374f6a7e5f50db4c60aef0d5f2a48 |
--- /dev/null |
+++ b/test/codegen/corelib/integer_to_string_test.dart |
@@ -0,0 +1,88 @@ |
+// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
+// for details. All rights reserved. Use of this source code is governed by a |
+// BSD-style license that can be found in the LICENSE file. |
+ |
+import "package:expect/expect.dart"; |
+ |
+main() { |
+ /// Test that converting [value] to a string gives [expect]. |
+ /// Also test that `-value` gives `"-"+expect`. |
+ test(int value, String expect) { |
+ Expect.equals(expect, value.toString()); |
+ Expect.equals(expect, "$value"); |
+ Expect.equals(expect, (new StringBuffer()..write(value)).toString()); |
+ if (value == 0) return; |
+ expect = "-$expect"; |
+ value = -value; |
+ Expect.equals(expect, value.toString()); |
+ Expect.equals(expect, "$value"); |
+ Expect.equals(expect, (new StringBuffer()..write(value)).toString()); |
+ } |
+ |
+ // Very simple tests. |
+ test(0, "0"); |
+ test(1, "1"); |
+ test(2, "2"); |
+ test(5, "5"); |
+ |
+ // Binary special cases. |
+ |
+ // ~2^30. |
+ test(0x3fffffff, "1073741823"); |
+ test(0x40000000, "1073741824"); |
+ test(0x40000001, "1073741825"); |
+ // ~2^31. |
+ test(0x7fffffff, "2147483647"); |
+ test(0x80000000, "2147483648"); |
+ test(0x80000001, "2147483649"); |
+ // ~2^32. |
+ test(0xffffffff, "4294967295"); |
+ test(0x100000000, "4294967296"); |
+ test(0x100000001, "4294967297"); |
+ |
+ // ~2^51. |
+ test(0x7ffffffffffff, "2251799813685247"); |
+ test(0x8000000000000, "2251799813685248"); |
+ test(0x8000000000001, "2251799813685249"); |
+ // ~2^52. |
+ test(0xfffffffffffff, "4503599627370495"); |
+ test(0x10000000000000, "4503599627370496"); |
+ test(0x10000000000001, "4503599627370497"); |
+ // ~2^53. |
+ test(0x1fffffffffffff, "9007199254740991"); |
+ test(0x20000000000000, "9007199254740992"); |
+ test(0x20000000000001, "9007199254740993"); /// 01: ok |
+ // ~2^62. |
+ test(0x3fffffffffffffff, "4611686018427387903"); /// 01: continued |
+ test(0x4000000000000000, "4611686018427387904"); /// 01: continued |
+ test(0x4000000000000001, "4611686018427387905"); /// 01: continued |
+ // ~2^63. |
+ test(0x7fffffffffffffff, "9223372036854775807"); /// 01: continued |
+ test(0x8000000000000000, "9223372036854775808"); /// 01: continued |
+ test(0x8000000000000001, "9223372036854775809"); /// 01: continued |
+ // ~2^64. |
+ test(0xffffffffffffffff, "18446744073709551615"); /// 01: continued |
+ test(0x10000000000000000, "18446744073709551616"); /// 01: continued |
+ test(0x10000000000000001, "18446744073709551617"); /// 01: continued |
+ // Big bignum. |
+ test(123456789012345678901234567890, /// 01: continued |
+ "123456789012345678901234567890"); /// 01: continued |
+ |
+ // Decimal special cases. |
+ |
+ int number = 10; |
+ // Numbers 99..99, 100...00, and 100..01 up to 23 digits. |
+ for (int i = 1; i < 15; i++) { // Works in dart2js up to 10^15. |
+ test(number - 1, "9" * i); |
+ test(number, "1" + "0" * i); |
+ test(number + 1, "1" + "0" * (i - 1) + "1"); |
+ number *= 10; |
+ } |
+ // Fails to represent exactly in dart2js. |
+ for (int i = 15; i < 22; i++) { /// 01: continued |
+ test(number - 1, "9" * i); /// 01: continued |
+ test(number, "1" + "0" * i); /// 01: continued |
+ test(number + 1, "1" + "0" * (i - 1) + "1"); /// 01: continued |
+ number *= 10; /// 01: continued |
+ } /// 01: continued |
+} |