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Side by Side Diff: tests/language/src/DoubleToStringAsPrecisionTest.dart

Issue 10248007: test rename overhaul: step 8 - language tests (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Created 8 years, 8 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 // Test basic integer operations.
5
6 main() {
7 Expect.equals("NaN", (double.NAN).toStringAsPrecision(1));
8 Expect.equals("Infinity", (double.INFINITY).toStringAsPrecision(2));
9 Expect.equals("-Infinity", (-double.INFINITY).toStringAsPrecision(2));
10 Expect.equals("0.000555000000000000", (0.000555).toStringAsPrecision(15));
11 Expect.equals("5.55000000000000e-7", (0.000000555).toStringAsPrecision(15));
12 Expect.equals("-5.55000000000000e-7", (-0.000000555).toStringAsPrecision(15));
13 Expect.equals("1e+8", (123456789.0).toStringAsPrecision(1));
14 Expect.equals("123456789", (123456789.0).toStringAsPrecision(9));
15 Expect.equals("1.2345679e+8", (123456789.0).toStringAsPrecision(8));
16 Expect.equals("1.234568e+8", (123456789.0).toStringAsPrecision(7));
17 Expect.equals("-1.234568e+8", (-123456789.0).toStringAsPrecision(7));
18 Expect.equals("-1.2e-9", (-.0000000012345).toStringAsPrecision(2));
19 Expect.equals("-1.2e-8", (-.000000012345).toStringAsPrecision(2));
20 Expect.equals("-1.2e-7", (-.00000012345).toStringAsPrecision(2));
21 Expect.equals("-0.0000012", (-.0000012345).toStringAsPrecision(2));
22 Expect.equals("-0.000012", (-.000012345).toStringAsPrecision(2));
23 Expect.equals("-0.00012", (-.00012345).toStringAsPrecision(2));
24 Expect.equals("-0.0012", (-.0012345).toStringAsPrecision(2));
25 Expect.equals("-0.012", (-.012345).toStringAsPrecision(2));
26 Expect.equals("-0.12", (-.12345).toStringAsPrecision(2));
27 Expect.equals("-1.2", (-1.2345).toStringAsPrecision(2));
28 Expect.equals("-12", (-12.345).toStringAsPrecision(2));
29 Expect.equals("-1.2e+2", (-123.45).toStringAsPrecision(2));
30 Expect.equals("-1.2e+3", (-1234.5).toStringAsPrecision(2));
31 Expect.equals("-1.2e+4", (-12345.0).toStringAsPrecision(2));
32 Expect.equals("-1.235e+4", (-12345.67).toStringAsPrecision(4));
33 Expect.equals("-1.234e+4", (-12344.67).toStringAsPrecision(4));
34 Expect.equals("-0.0", (-0.0).toStringAsPrecision(2));
35 Expect.equals("-0", (-0.0).toStringAsPrecision(1));
36 // Test that we round up even when the last digit generated is even.
37 // dtoa does not do this in its original form.
38 Expect.equals("1.3", 1.25.toStringAsPrecision(2));
39 Expect.equals("1.4", 1.35.toStringAsPrecision(2));
40 }
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