feat: Added ctor overload to pass in a string

Author: linkdotnet

CHANGELOG.md

@@ -6,6 +6,10 @@ All notable changes to **ValueStringBuilder** will be documented in this file. T
 
 ## [Unreleased]
 
+### Addeed
+
+- Added overload which allows an initial string for the ValueStringBuilder
+
 ## [1.5.1] - 2022-11-05
 
 ### Added

src/LinkDotNet.StringBuilder/ValueStringBuilder.cs

@@ -41,6 +41,17 @@ public ValueStringBuilder(Span<char> initialBuffer)
         arrayFromPool = null;
     }
 
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ValueStringBuilder"/> struct.
+    /// </summary>
+    /// <param name="initialText">The initial text used to initialize this instance. If <paramref name="initialText"/> is <c>null</c>
+    /// the <see cref="ValueStringBuilder"/> will return an empty string (<see cref="string.Empty"/>).
+    /// </param>
+    public ValueStringBuilder(ReadOnlySpan<char> initialText)
+    {
+        Append(initialText);
+    }
+
     /// <summary>
     /// Gets the current length of the represented string.
     /// </summary>

tests/LinkDotNet.StringBuilder.UnitTests/ValueStringBuilderTests.cs

@@ -384,4 +384,12 @@ public void ConcatDifferentTypesWithFiveArguments()
 
         result.Should().Be("Test1234");
     }
+
+    [Fact]
+    public void ShouldAcceptInitialCharBuffer()
+    {
+        var result = new ValueStringBuilder("Hello World").ToString();
+
+        result.Should().Be("Hello World");
+    }
 }