Add Slice_SourceNotEmpty_OutOfRange_ExpectArgumentOutOfRangeException…

… test

src/flatcollections-array/FlatArray.Tests/Tests.FlatArray.T/Array/Array.Slice.SourceNotEmpty_OutOfRange.cs

@@ -0,0 +1,64 @@
+using System;
+using Xunit;
+using static PrimeFuncPack.UnitTest.TestData;
+using static System.FormattableString;
+
+namespace PrimeFuncPack.Core.Tests;
+
+partial class FlatArrayTest
+{
+    [Theory]
+    [MemberData(nameof(Slice_SourceNotEmpty_OutOfRange_ExpectArgumentOutOfRangeException_CaseSource))]
+    public void Slice_SourceNotEmpty_OutOfRange_ExpectArgumentOutOfRangeException(
+        FlatArray<int> source,
+        int start,
+        int length)
+    {
+        var actualException = Assert.Throws<ArgumentOutOfRangeException>(() => _ = source.Slice(start, length));
+        var expectedMessage = Invariant(
+            $"Segment must be within the array bounds. Segment start was {start}. Segment length was {length}. Array length was {source.Length}.");
+        Assert.Equal(expectedMessage, actualException.Message);
+    }
+
+    public static TheoryData<FlatArray<int>, int, int> Slice_SourceNotEmpty_OutOfRange_ExpectArgumentOutOfRangeException_CaseSource
+    {
+        get
+        {
+            TheoryData<FlatArray<int>, int, int> result = [];
+
+            result.Add(
+                new[] { MinusFifteen }.InitializeFlatArray(),
+                -1, 0);
+
+            result.Add(
+                new[] { MinusFifteen }.InitializeFlatArray(),
+                0, 2);
+
+            result.Add(
+                new[] { MinusFifteen }.InitializeFlatArray(),
+                2, 0);
+
+            result.Add(
+                new[] { MinusFifteen, PlusFifteen }.InitializeFlatArray(),
+                2, 1);
+
+            result.Add(
+                new[] { MinusFifteen, PlusFifteen }.InitializeFlatArray(),
+                3, 1);
+
+            result.Add(
+                new[] { MinusFifteen, MinusOne, Zero, One, PlusFifteen }.InitializeFlatArray(),
+                5, int.MaxValue);
+
+            result.Add(
+                new[] { MinusFifteen, MinusOne, Zero, One, PlusFifteen, int.MinValue }.InitializeFlatArray(5),
+                4, 2);
+
+            result.Add(
+                new[] { MinusFifteen, MinusOne, Zero, One, PlusFifteen, int.MaxValue }.InitializeFlatArray(5),
+                int.MinValue, int.MaxValue);
+
+            return result;
+        }
+    }
+}