Add test to test InvariantCulture serialization of numbers in different cultures

Author: mythz

tests/ServiceStack.Text.Tests/CultureInfoTests.cs

@@ -89,5 +89,43 @@ public void Serializes_long_double_without_E_notation()
 			Assert.That(doubleStr, Is.EqualTo("1234567890123456"));
 		}
 
+        public class NumberClass
+        {
+            public int IntValue { get; set; }
+            public uint UIntValue { get; set; }
+            public long LongValue { get; set; }
+            public ulong ULongValue { get; set; }
+            public float FloatValue { get; set; }
+            public double DoubleValue { get; set; }
+            public decimal DecimalValue { get; set; }
+
+            public static NumberClass Create(int i)
+            {
+                return new NumberClass
+                {
+                    IntValue = i*1000,
+                    UIntValue = (uint) (i * 1000),
+                    LongValue = i * 1000,
+                    ULongValue = (ulong) (i * 1000),
+                    FloatValue = (float) (i * 1000 + .999),
+                    DoubleValue = i * 1000 + .999,
+                    DecimalValue = (decimal) (i * 1000 + .999),
+                };
+            }
+        }
+
+	    [Test]
+	    public void Does_use_invariant_culture_for_numbers()
+	    {
+	        var dto = NumberClass.Create(1);
+            dto.ToJson().Print();
+            dto.ToJsv().Print();
+            dto.ToCsv().Print();
+
+            Assert.That(dto.ToJson(), Is.Not.StringContaining("1000,9"));
+            Assert.That(dto.ToJsv(), Is.Not.StringContaining("1000,9"));
+            Assert.That(dto.ToCsv(), Is.Not.StringContaining("1000,9"));
+	    }
+
 	}
 }