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implement box avoidance (JamesNK#2639)
Co-authored-by: Marc Gravell <[email protected]> Co-authored-by: James Newton-King <[email protected]>
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May 15, 2022
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,129 @@ | ||
| #region License | ||
| // Copyright (c) 2022 James Newton-King | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person | ||
| // obtaining a copy of this software and associated documentation | ||
| // files (the "Software"), to deal in the Software without | ||
| // restriction, including without limitation the rights to use, | ||
| // copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the | ||
| // Software is furnished to do so, subject to the following | ||
| // conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be | ||
| // included in all copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | ||
| // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES | ||
| // OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | ||
| // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT | ||
| // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, | ||
| // WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | ||
| // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | ||
| // OTHER DEALINGS IN THE SOFTWARE. | ||
| #endregion | ||
|
|
||
| using Newtonsoft.Json.Linq; | ||
| using System.Globalization; | ||
| using Newtonsoft.Json.Tests.Documentation.Samples.Linq; | ||
|
|
||
| #if DNXCORE50 | ||
| using Xunit; | ||
| using Test = Xunit.FactAttribute; | ||
| using Assert = Newtonsoft.Json.Tests.XUnitAssert; | ||
| #else | ||
| using NUnit.Framework; | ||
| #endif | ||
|
|
||
| namespace Newtonsoft.Json.Tests.Issues | ||
| { | ||
| [TestFixture] | ||
| public class Issue2638 | ||
| { | ||
| [Test] | ||
| public void DeserilizeUsesSharedBooleans() | ||
| { | ||
| Test(true); | ||
| Test(false); | ||
|
|
||
| static void Test(bool value) | ||
| { | ||
| var obj = (JObject)JToken.Parse(@"{""x"": XXX, ""y"": XXX}".Replace("XXX", value ? "true" : "false")); | ||
| var x = ((JValue)obj["x"]).Value; | ||
| var y = ((JValue)obj["y"]).Value; | ||
|
|
||
| Assert.AreEqual(value, (bool)x); | ||
| Assert.AreEqual(value, (bool)y); | ||
| Assert.AreSame(x, y); | ||
| } | ||
| } | ||
|
|
||
| [Test] | ||
| public void DeserilizeUsesSharedDoubleZeros() | ||
| { | ||
| Test(0, true); | ||
| Test(double.NaN, true); | ||
| Test(double.NegativeInfinity, true); | ||
| Test(double.PositiveInfinity, true); | ||
| Test(1, false); | ||
| Test(42.42, false); | ||
|
|
||
| static void Test(double value, bool expectSame) | ||
| { | ||
| var obj = (JObject)JToken.Parse(@"{""x"": XXX, ""y"": XXX}".Replace("XXX", value.ToString("0.0###", CultureInfo.InvariantCulture))); | ||
| var x = ((JValue)obj["x"]).Value; | ||
| var y = ((JValue)obj["y"]).Value; | ||
|
|
||
| Assert.AreEqual(value, (double)x); | ||
| Assert.AreEqual(value, (double)y); | ||
| if (expectSame) | ||
| { | ||
| Assert.AreSame(x, y); | ||
| } | ||
| else | ||
| { | ||
| Assert.AreNotSame(x, y); | ||
| } | ||
| var unboxed = (double)x; | ||
| Assert.AreEqual(double.IsNaN(value), double.IsNaN(unboxed)); | ||
| Assert.AreEqual(double.IsPositiveInfinity(value), double.IsPositiveInfinity(unboxed)); | ||
| Assert.AreEqual(double.IsNegativeInfinity(value), double.IsNegativeInfinity(unboxed)); | ||
| } | ||
| } | ||
|
|
||
| [Test] | ||
| public void DeserilizeUsesSharedSmallInt64() | ||
| { | ||
| Test(-2, false); | ||
| Test(-1, true); | ||
| Test(0, true); | ||
| Test(1, true); | ||
| Test(2, true); | ||
| Test(3, true); | ||
| Test(4, true); | ||
| Test(5, true); | ||
| Test(6, true); | ||
| Test(7, true); | ||
| Test(8, true); | ||
| Test(9, false); | ||
|
|
||
| static void Test(long value, bool expectSame) | ||
| { | ||
| var obj = (JObject)JToken.Parse(@"{""x"": XXX, ""y"": XXX}".Replace("XXX", value.ToString(CultureInfo.InvariantCulture))); | ||
| var x = ((JValue)obj["x"]).Value; | ||
| var y = ((JValue)obj["y"]).Value; | ||
|
|
||
| Assert.AreEqual(value, (long)x); | ||
| Assert.AreEqual(value, (long)y); | ||
| if (expectSame) | ||
| { | ||
| Assert.AreSame(x, y); | ||
| } | ||
| else | ||
| { | ||
| Assert.AreNotSame(x, y); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } |
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