Add dictionary tests for non-string reference type

src/benchmarks/micro/libraries/System.Collections/Sort.Types.cs → src/benchmarks/micro/libraries/System.Collections/DataTypes.cs

@@ -47,4 +47,19 @@ public BigStruct(int value)
 
         public int CompareTo(BigStruct other) => _int1.CompareTo(other._int1);
     }
+
+    public class SmallClass : IEquatable<SmallClass>, IComparable<SmallClass>
+    {
+        public int Value;
+
+        public SmallClass(int value) => Value = value;
+
+        public int CompareTo(SmallClass other) => other == null ? -1 : Value.CompareTo(other.Value);
+
+        public bool Equals(SmallClass other) => other != null && Value == other.Value;
+
+        public override bool Equals(object obj) => obj is SmallClass other && Equals(other);
+
+        public override int GetHashCode() => Value;
+    }
 }

src/benchmarks/micro/libraries/System.Collections/TryGetValue/TryGetValueFalse.cs

@@ -15,7 +15,9 @@
 namespace System.Collections
 {
     [BenchmarkCategory(Categories.Libraries, Categories.Collections, Categories.GenericCollections)]
-    [GenericTypeArguments(typeof(int), typeof(int))] // value type
+    [GenericTypeArguments(typeof(int), typeof(int))] // primitive value type
+    [GenericTypeArguments(typeof(BigStruct), typeof(BigStruct))] // big value type
+    [GenericTypeArguments(typeof(SmallClass), typeof(SmallClass))] // reference type
     [GenericTypeArguments(typeof(string), typeof(string))] // reference type
     public class TryGetValueFalse<TKey, TValue>
     {

src/benchmarks/micro/libraries/System.Collections/TryGetValue/TryGetValueTrue.cs

@@ -15,7 +15,9 @@
 namespace System.Collections
 {
     [BenchmarkCategory(Categories.Libraries, Categories.Collections, Categories.GenericCollections)]
-    [GenericTypeArguments(typeof(int), typeof(int))] // value type
+    [GenericTypeArguments(typeof(int), typeof(int))] // primitive value type
+    [GenericTypeArguments(typeof(BigStruct), typeof(BigStruct))] // big value type
+    [GenericTypeArguments(typeof(SmallClass), typeof(SmallClass))] // reference type
     [GenericTypeArguments(typeof(string), typeof(string))] // reference type
     public class TryGetValueTrue<TKey, TValue>
     {

src/harness/BenchmarkDotNet.Extensions/ValuesGenerator.cs

@@ -5,6 +5,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Reflection;
 using System.Runtime.CompilerServices;
 using System.Text;
 
@@ -222,6 +223,9 @@ private static T GenerateValue<T>(Random random)
             if (typeof(T) == typeof(Guid))
                 return (T)(object)GenerateRandomGuid(random);   // note: may return malformed Guids (not logically valid per RFC 4122 formatting)
 
+            if (typeof(T).GetConstructor(new[] { typeof(int) }) is ConstructorInfo ctor)
+                return (T)ctor.Invoke(new[] { (object)random.Next() });
+
             throw new NotImplementedException($"{typeof(T).Name} is not implemented");
         }