Fixed Multi Param Match logic (#256)

* fix?

* 1.0.9

* <PackageReference Include="System.Linq.Dynamic.Core" Version="1.0.11" />

* fix tests ?

* fix

* RequestMessageParamMatcher

src/WireMock.Net/Matchers/ExactMatcher.cs

@@ -39,7 +39,12 @@ namespace WireMock.Matchers
         /// <inheritdoc cref="IStringMatcher.IsMatch"/>
         public double IsMatch(string input)
         {
-            return MatchBehaviourHelper.Convert(MatchBehaviour, MatchScores.ToScore(_values.Select(value => value.Equals(input))));
+            if (_values.Length == 1)
+            {
+                return MatchBehaviourHelper.Convert(MatchBehaviour, MatchScores.ToScore(_values[0] == input));
+            }
+
+            return MatchBehaviourHelper.Convert(MatchBehaviour, MatchScores.ToScore(_values.Contains(input)));
         }
 
         /// <inheritdoc cref="IStringMatcher.GetPatterns"/>

src/WireMock.Net/Matchers/MatchScores.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 
 namespace WireMock.Matchers
@@ -54,6 +55,7 @@ namespace WireMock.Matchers
         /// </summary>
         /// <param name="values">The values.</param>
         /// <returns>average score</returns>
+        [SuppressMessage("ReSharper", "PossibleMultipleEnumeration")]
         public static double ToScore(IEnumerable<bool> values)
         {
             return values.Any() ? values.Select(ToScore).Average() : Mismatch;
@@ -64,6 +66,7 @@ namespace WireMock.Matchers
         /// </summary>
         /// <param name="values">The values.</param>
         /// <returns>average score</returns>
+        [SuppressMessage("ReSharper", "PossibleMultipleEnumeration")]
         public static double ToScore(IEnumerable<double> values)
         {
             return values.Any() ? values.Average() : Mismatch;

src/WireMock.Net/Matchers/Request/RequestMessageParamMatcher.cs

@@ -1,7 +1,7 @@
-using System;
+using JetBrains.Annotations;
+using System;
 using System.Collections.Generic;
 using System.Linq;
-using JetBrains.Annotations;
 using WireMock.Util;
 using WireMock.Validation;
 
@@ -106,15 +106,8 @@ namespace WireMock.Matchers.Request
 
             if (Matchers != null && Matchers.Any())
             {
-                // Matchers are defined, just use the matchers to calculate the match score.
-                var scores = new List<double>();
-                foreach (string valuePresentInRequestMessage in valuesPresentInRequestMessage)
-                {
-                    double score = Matchers.Max(m => m.IsMatch(valuePresentInRequestMessage));
-                    scores.Add(score);
-                }
-
-                return scores.Any() ? scores.Average() : MatchScores.Mismatch;
+                // Return the score based on Matchers and valuesPresentInRequestMessage
+                return CalculateScore(valuesPresentInRequestMessage);
             }
 
             if (Matchers == null || !Matchers.Any())
@@ -125,5 +118,35 @@ namespace WireMock.Matchers.Request
 
             return MatchScores.Mismatch;
         }
+
+        private double CalculateScore(WireMockList<string> valuesPresentInRequestMessage)
+        {
+            var total = new List<double>();
+
+            // If the total patterns in all matchers > values in message, use the matcher as base
+            if (Matchers.Sum(m => m.GetPatterns().Length) > valuesPresentInRequestMessage.Count)
+            {
+                foreach (var matcher in Matchers)
+                {
+                    double score = 0d;
+                    foreach (string valuePresentInRequestMessage in valuesPresentInRequestMessage)
+                    {
+                        score += matcher.IsMatch(valuePresentInRequestMessage) / matcher.GetPatterns().Length;
+                    }
+
+                    total.Add(score);
+                }
+            }
+            else
+            {
+                foreach (string valuePresentInRequestMessage in valuesPresentInRequestMessage)
+                {
+                    double score = Matchers.Max(m => m.IsMatch(valuePresentInRequestMessage));
+                    total.Add(score);
+                }
+            }
+
+            return total.Any() ? MatchScores.ToScore(total) : MatchScores.Mismatch;
+        }
     }
 }

src/WireMock.Net/WireMock.Net.csproj

@@ -57,7 +57,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="System.Linq.Dynamic.Core" Version="1.0.9" />
+    <PackageReference Include="System.Linq.Dynamic.Core" Version="1.0.11" />
     <PackageReference Include="RandomDataGenerator.Net" Version="1.0.7" />
   </ItemGroup>