Refactored test: From_ValueAndUnit_ReturnsQuantityWithSameValueAndUnit (#1596)

Replaced the in-lined iteration with `Assert.All` and replaced the use
of the named property with the `Value`

Author: lipchev

CodeGen/Generators/UnitsNetGen/UnitTestBaseClassGenerator.cs

@@ -178,6 +178,7 @@ public string Generate()
 using System.Globalization;
 using System.Linq;
 using System.Threading;
+using UnitsNet.InternalHelpers;
 using UnitsNet.Tests.Helpers;
 using UnitsNet.Tests.TestsBase;
 using UnitsNet.Units;
@@ -322,19 +323,13 @@ public void Ctor_UnitSystem_ThrowsArgumentExceptionIfNotSupported()
 
         [Fact]
         public void From_ValueAndUnit_ReturnsQuantityWithSameValueAndUnit()
-        {{");
-            var i = 0;
-            foreach (var unit in _quantity.Units)
-            {
-                var quantityVariable = $"quantity{i++:D2}";
-                Writer.WL($@"
-            var {quantityVariable} = {_quantity.Name}.From(1, {GetUnitFullName(unit)});
-            AssertEx.EqualTolerance(1, {quantityVariable}.{unit.PluralName}, {unit.PluralName}Tolerance);
-            Assert.Equal({GetUnitFullName(unit)}, {quantityVariable}.Unit);
-");
-
-            }
-            Writer.WL($@"
+        {{
+            Assert.All(EnumHelper.GetValues<{_unitEnumName}>(), unit =>
+            {{
+                var quantity = {_quantity.Name}.From(1, unit);
+                Assert.Equal(1, quantity.Value);
+                Assert.Equal(unit, quantity.Unit);
+            }});
         }}
 
         [Fact]