ExactMatcher : IgnoreCase (#817)

* ...

* mm

* fix some null warnings

* fx

src/WireMock.Net/Matchers/ExactMatcher.cs

@@ -1,7 +1,7 @@
+using System;
 using System.Linq;
 using AnyOfTypes;
 using Stef.Validation;
-using WireMock.Extensions;
 using WireMock.Models;
 
 namespace WireMock.Matchers;
@@ -9,8 +9,8 @@ namespace WireMock.Matchers;
 /// <summary>
 /// ExactMatcher
 /// </summary>
-/// <seealso cref="IStringMatcher" />
-public class ExactMatcher : IStringMatcher
+/// <seealso cref="IStringMatcher" /> and <seealso cref="IIgnoreCaseMatcher" />
+public class ExactMatcher : IStringMatcher, IIgnoreCaseMatcher
 {
     private readonly AnyOf<string, StringPattern>[] _values;
 
@@ -24,7 +24,16 @@ public class ExactMatcher : IStringMatcher
     /// Initializes a new instance of the <see cref="ExactMatcher"/> class.
     /// </summary>
     /// <param name="values">The values.</param>
-    public ExactMatcher(params AnyOf<string, StringPattern>[] values) : this(MatchBehaviour.AcceptOnMatch, false, MatchOperator.Or, values)
+    public ExactMatcher(params AnyOf<string, StringPattern>[] values) : this(MatchBehaviour.AcceptOnMatch, false, false, MatchOperator.Or, values)
+    {
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ExactMatcher"/> class.
+    /// </summary>
+    /// <param name="ignoreCase">Ignore the case from the pattern(s).</param>
+    /// <param name="values">The values.</param>
+    public ExactMatcher(bool ignoreCase, params AnyOf<string, StringPattern>[] values) : this(MatchBehaviour.AcceptOnMatch, ignoreCase, false, MatchOperator.Or, values)
     {
     }
 
@@ -32,11 +41,13 @@ public class ExactMatcher : IStringMatcher
     /// Initializes a new instance of the <see cref="ExactMatcher"/> class.
     /// </summary>
     /// <param name="matchBehaviour">The match behaviour.</param>
+    /// <param name="ignoreCase">Ignore the case from the pattern(s).</param>
     /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
     /// <param name="matchOperator">The <see cref="Matchers.MatchOperator"/> to use. (default = "Or")</param>
     /// <param name="values">The values.</param>
     public ExactMatcher(
         MatchBehaviour matchBehaviour,
+        bool ignoreCase = false,
         bool throwException = false,
         MatchOperator matchOperator = MatchOperator.Or,
         params AnyOf<string, StringPattern>[] values)
@@ -45,13 +56,18 @@ public class ExactMatcher : IStringMatcher
 
         MatchBehaviour = matchBehaviour;
         ThrowException = throwException;
+        IgnoreCase = ignoreCase;
         MatchOperator = matchOperator;
     }
 
     /// <inheritdoc cref="IStringMatcher.IsMatch"/>
     public double IsMatch(string? input)
     {
-        double score = MatchScores.ToScore(_values.Select(v => v.GetPattern() == input).ToArray(), MatchOperator);
+        Func<string?, bool> equals = IgnoreCase
+            ? pattern => string.Equals(pattern, input, StringComparison.OrdinalIgnoreCase)
+            : pattern => pattern == input;
+
+        double score = MatchScores.ToScore(_values.Select(v => equals(v)).ToArray(), MatchOperator);
         return MatchBehaviourHelper.Convert(MatchBehaviour, score);
     }
 
@@ -66,4 +82,7 @@ public class ExactMatcher : IStringMatcher
 
     /// <inheritdoc cref="IMatcher.Name"/>
     public string Name => "ExactMatcher";
+
+    /// <inheritdoc />
+    public bool IgnoreCase { get; }
 }