Add tests for negative decimals rounding

Singulink · Apr 19, 2021 · a0f1115 · a0f1115
1 parent 7037766
commit a0f1115
Showing 1 changed file with 9 additions and 2 deletions.
diff --git a/Source/Singulink.Numerics.BigDecimal.Tests/RoundingTests.cs b/Source/Singulink.Numerics.BigDecimal.Tests/RoundingTests.cs
@@ -33,14 +33,21 @@ public void RoundOverHalf()
         }
 
         [TestMethod]
-        public void MidPointAwayFromZero()
+        public void MidpointAwayFromZero()
         {
             Assert.AreEqual(1235m, BigDecimal.Round(1234.5m, 0, MidpointRounding.AwayFromZero));
             Assert.AreEqual(1235m, BigDecimal.Round(1234.5675m, 0, MidpointRounding.AwayFromZero));
         }
 
         [TestMethod]
-        public void RoundingToNonExistantDigit()
+        public void NegativeDecimals()
+        {
+            Assert.AreEqual(0m, BigDecimal.Round(500m, -3));
+            Assert.AreEqual(-1000m, BigDecimal.Round(-500m, -3, MidpointRounding.AwayFromZero));
+        }
+
+        [TestMethod]
+        public void RoundingToNonExistentDigit()
         {
             // Ensures that rounding to a digit that doesn't exist in the mantissa works, i.e. 0.5 => 1