Add optimized modulo helpers for unsigned integers

2025-09-21 10:14:26 +02:00
1 parent 2c2bc62cb2
commit 95a0b030f6
@@ -0,0 +1,85 @@
+using FluentAssertions;
+using Xunit;
+
+namespace PerfectNumbers.Core.Tests;
+
+public class UIntExtensionsTests
+{
+    [Theory]
+    [Trait("Category", "Fast")]
+    [InlineData(0U)]
+    [InlineData(1U)]
+    [InlineData(1234567890U)]
+    [InlineData(uint.MaxValue)]
+    public void Mod3_matches_operator(uint value)
+    {
+        value.Mod3().Should().Be(value % 3U);
+    }
+
+    [Theory]
+    [Trait("Category", "Fast")]
+    [InlineData(0U)]
+    [InlineData(1U)]
+    [InlineData(1234567890U)]
+    [InlineData(uint.MaxValue)]
+    public void Mod5_matches_operator(uint value)
+    {
+        value.Mod5().Should().Be(value % 5U);
+    }
+
+    [Theory]
+    [Trait("Category", "Fast")]
+    [InlineData(0U)]
+    [InlineData(1U)]
+    [InlineData(1234567890U)]
+    [InlineData(uint.MaxValue)]
+    public void Mod7_matches_operator(uint value)
+    {
+        value.Mod7().Should().Be(value % 7U);
+    }
+
+    [Theory]
+    [Trait("Category", "Fast")]
+    [InlineData(0U)]
+    [InlineData(1U)]
+    [InlineData(1234567890U)]
+    [InlineData(uint.MaxValue)]
+    public void Mod8_matches_operator(uint value)
+    {
+        value.Mod8().Should().Be(value % 8U);
+    }
+
+    [Theory]
+    [Trait("Category", "Fast")]
+    [InlineData(0U)]
+    [InlineData(1U)]
+    [InlineData(1234567890U)]
+    [InlineData(uint.MaxValue)]
+    public void Mod10_matches_operator(uint value)
+    {
+        value.Mod10().Should().Be(value % 10U);
+    }
+
+    [Theory]
+    [Trait("Category", "Fast")]
+    [InlineData(0U)]
+    [InlineData(1U)]
+    [InlineData(1234567890U)]
+    [InlineData(uint.MaxValue)]
+    public void Mod11_matches_operator(uint value)
+    {
+        value.Mod11().Should().Be(value % 11U);
+    }
+
+    [Theory]
+    [Trait("Category", "Fast")]
+    [InlineData(0U)]
+    [InlineData(1U)]
+    [InlineData(1234567890U)]
+    [InlineData(uint.MaxValue)]
+    public void Mod128_matches_operator(uint value)
+    {
+        value.Mod128().Should().Be(value % 128U);
+    }
+}
+