Fix tests failing due to manipulating shared static state

Move unit abbreviations out of UnitInfo and into UnitAbbreviationsCache, so manipulating one cache instance won't affect another instance.

Author: angularsen

UnitsNet.Serialization.JsonNet/AbbreviatedUnitsConverter.cs

@@ -45,7 +45,7 @@ public AbbreviatedUnitsConverter()
         /// </summary>
         /// <param name="comparer">The comparer used to compare the property/quantity names (e.g. StringComparer.OrdinalIgnoreCase) </param>
         public AbbreviatedUnitsConverter(IEqualityComparer<string?> comparer)
-            : this(new Dictionary<string, QuantityInfo>(Quantity.ByName, comparer), UnitAbbreviationsCache.Default, comparer)
+            : this(new Dictionary<string, QuantityInfo>(Quantity.ByName, comparer), UnitsNetSetup.Default.UnitAbbreviations, comparer)
         {
         }
 

UnitsNet.Tests/AlphabeticalOrderer.cs

@@ -0,0 +1,29 @@
+// Licensed under MIT No Attribution, see LICENSE file at the root.
+// Copyright 2013 Andreas Gullberg Larsen ([email protected]). Maintained at https://github.com/angularsen/UnitsNet.
+
+using System.Collections.Generic;
+using System.Linq;
+using Xunit.Abstractions;
+using Xunit.Sdk;
+
+namespace UnitsNet.Tests;
+
+/// <summary>
+///     Useful for debugging tests where a particular order of tests is required.
+/// </summary>
+/// <example>
+/// Add the attribute to your test class:
+/// <code>
+/// <![CDATA[
+/// [TestCaseOrderer(
+/// ordererTypeName: "UnitsNet.Tests.AlphabeticalOrderer",
+/// ordererAssemblyName: "UnitsNet.Tests")]
+/// ]]>
+/// </code>
+/// </example>
+public class AlphabeticalOrderer : ITestCaseOrderer
+{
+    public IEnumerable<TTestCase> OrderTestCases<TTestCase>(
+        IEnumerable<TTestCase> testCases) where TTestCase : ITestCase =>
+        testCases.OrderBy(testCase => testCase.TestMethod.Method.Name);
+}

UnitsNet.Tests/BaseUnitsTests.cs

@@ -140,13 +140,14 @@ public void ToStringGivesExpectedResult()
                 AmountOfSubstanceUnit.Mole,
                 LuminousIntensityUnit.Candela);
 
-            var m = UnitAbbreviationsCache.Default.GetDefaultAbbreviation(LengthUnit.Meter);
-            var kg = UnitAbbreviationsCache.Default.GetDefaultAbbreviation(MassUnit.Kilogram);
-            var s = UnitAbbreviationsCache.Default.GetDefaultAbbreviation(DurationUnit.Second);
-            var A = UnitAbbreviationsCache.Default.GetDefaultAbbreviation(ElectricCurrentUnit.Ampere);
-            var K = UnitAbbreviationsCache.Default.GetDefaultAbbreviation(TemperatureUnit.Kelvin);
-            var mol = UnitAbbreviationsCache.Default.GetDefaultAbbreviation(AmountOfSubstanceUnit.Mole);
-            var cd = UnitAbbreviationsCache.Default.GetDefaultAbbreviation(LuminousIntensityUnit.Candela);
+            UnitAbbreviationsCache cache = UnitsNetSetup.Default.UnitAbbreviations;
+            var m = cache.GetDefaultAbbreviation(LengthUnit.Meter);
+            var kg = cache.GetDefaultAbbreviation(MassUnit.Kilogram);
+            var s = cache.GetDefaultAbbreviation(DurationUnit.Second);
+            var A = cache.GetDefaultAbbreviation(ElectricCurrentUnit.Ampere);
+            var K = cache.GetDefaultAbbreviation(TemperatureUnit.Kelvin);
+            var mol = cache.GetDefaultAbbreviation(AmountOfSubstanceUnit.Mole);
+            var cd = cache.GetDefaultAbbreviation(LuminousIntensityUnit.Candela);
 
             Assert.Equal($"[Length]: {m}, [Mass]: {kg}, [Time]: {s}, [Current]: {A}, [Temperature]: {K}, [Amount]: {mol}, [LuminousIntensity]: {cd}", siBaseUnits.ToString());
         }

UnitsNet.Tests/QuantityIFormattableTests.cs

@@ -27,11 +27,12 @@ public void EmptyOrNullFormatStringEqualsGFormat()
         [Fact]
         public void AFormatGetsAbbreviations()
         {
-            Assert.Equal(UnitAbbreviationsCache.Default.GetDefaultAbbreviation(MyLength.Unit, CultureInfo.InvariantCulture), MyLength.ToString("a", CultureInfo.InvariantCulture));
-            Assert.Equal(UnitAbbreviationsCache.Default.GetDefaultAbbreviation(MyLength.Unit, CultureInfo.InvariantCulture), MyLength.ToString("a0", CultureInfo.InvariantCulture));
+            UnitAbbreviationsCache cache = UnitsNetSetup.Default.UnitAbbreviations;
+            Assert.Equal(cache.GetDefaultAbbreviation(MyLength.Unit, CultureInfo.InvariantCulture), MyLength.ToString("a", CultureInfo.InvariantCulture));
+            Assert.Equal(cache.GetDefaultAbbreviation(MyLength.Unit, CultureInfo.InvariantCulture), MyLength.ToString("a0", CultureInfo.InvariantCulture));
 
-            Assert.Equal(UnitAbbreviationsCache.Default.GetUnitAbbreviations(MyLength.Unit, CultureInfo.InvariantCulture)[1], MyLength.ToString("a1", CultureInfo.InvariantCulture));
-            Assert.Equal(UnitAbbreviationsCache.Default.GetUnitAbbreviations(MyLength.Unit, CultureInfo.InvariantCulture)[2], MyLength.ToString("a2", CultureInfo.InvariantCulture));
+            Assert.Equal(cache.GetUnitAbbreviations(MyLength.Unit, CultureInfo.InvariantCulture)[1], MyLength.ToString("a1", CultureInfo.InvariantCulture));
+            Assert.Equal(cache.GetUnitAbbreviations(MyLength.Unit, CultureInfo.InvariantCulture)[2], MyLength.ToString("a2", CultureInfo.InvariantCulture));
         }
 
         [Fact]

UnitsNet.Tests/UnitAbbreviationsCacheTests.cs

@@ -229,6 +229,24 @@ public void GetDefaultAbbreviationFallsBackToUsEnglishCulture()
             Assert.Equal("US english abbreviation for Unit1", abbreviation);
         }
 
+        [Fact]
+        public void MapUnitToAbbreviation_DoesNotAffectOtherCacheInstances()
+        {
+            var culture = AmericanCulture;
+            var unit = AreaUnit.SquareMeter;
+
+            var cache1 = new UnitAbbreviationsCache();
+            cache1.MapUnitToAbbreviation(unit, culture, "m^2");
+
+            var cache2 = new UnitAbbreviationsCache();
+            cache2.MapUnitToAbbreviation(unit, culture, "m2");
+
+            Assert.Equal(new[] { "m²", "m^2" }, cache1.GetUnitAbbreviations(unit, culture));
+            Assert.Equal(new[] { "m²", "m2" }, cache2.GetUnitAbbreviations(unit, culture));
+            Assert.Equal("m²", cache1.GetDefaultAbbreviation(unit, culture));
+            Assert.Equal("m²", cache2.GetDefaultAbbreviation(unit, culture));
+        }
+
         [Fact]
         public void MapUnitToAbbreviation_AddCustomUnit_DoesNotOverrideDefaultAbbreviationForAlreadyMappedUnits()
         {