Reading Profiles (#3845)

Co-authored-by: Joseph Milazzo <joseph.v.milazzo@gmail.com>

API.Tests/Helpers/RandfHelper.cs

@@ -0,0 +1,124 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+
+namespace API.Tests.Helpers;
+
+public class RandfHelper
+{
+    private static readonly Random Random = new ();
+
+    /// <summary>
+    /// Returns true if all simple fields are equal
+    /// </summary>
+    /// <param name="obj1"></param>
+    /// <param name="obj2"></param>
+    /// <param name="ignoreFields">fields to ignore, note that the names are very weird sometimes</param>
+    /// <returns></returns>
+    /// <exception cref="ArgumentNullException"></exception>
+    /// <exception cref="ArgumentException"></exception>
+    public static bool AreSimpleFieldsEqual(object obj1, object obj2, IList<string> ignoreFields)
+    {
+        if (obj1 == null || obj2 == null)
+            throw new ArgumentNullException("Neither object can be null.");
+
+        Type type1 = obj1.GetType();
+        Type type2 = obj2.GetType();
+
+        if (type1 != type2)
+            throw new ArgumentException("Objects must be of the same type.");
+
+        FieldInfo[] fields = type1.GetFields(BindingFlags.Public | BindingFlags.Instance | BindingFlags.NonPublic);
+
+        foreach (var field in fields)
+        {
+            if (field.IsInitOnly) continue;
+            if (ignoreFields.Contains(field.Name)) continue;
+
+            Type fieldType = field.FieldType;
+
+            if (IsRelevantType(fieldType))
+            {
+                object value1 = field.GetValue(obj1);
+                object value2 = field.GetValue(obj2);
+
+                if (!Equals(value1, value2))
+                {
+                    throw new ArgumentException("Fields must be of the same type: " +  field.Name + " was  " + value1 + " and  " + value2);
+                }
+            }
+        }
+
+        return true;
+    }
+
+    private static bool IsRelevantType(Type type)
+    {
+        return type.IsPrimitive
+               || type == typeof(string)
+               || type.IsEnum;
+    }
+
+    /// <summary>
+    /// Sets all simple fields of the given object to a random value
+    /// </summary>
+    /// <param name="obj"></param>
+    /// <remarks>Simple is, primitive, string, or enum</remarks>
+    /// <exception cref="ArgumentNullException"></exception>
+    public static void SetRandomValues(object obj)
+    {
+        if (obj == null) throw new ArgumentNullException(nameof(obj));
+
+        Type type = obj.GetType();
+        FieldInfo[] fields = type.GetFields(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
+
+        foreach (var field in fields)
+        {
+            if (field.IsInitOnly) continue; // Skip readonly fields
+
+            object value = GenerateRandomValue(field.FieldType);
+            if (value != null)
+            {
+                field.SetValue(obj, value);
+            }
+        }
+    }
+
+    private static object GenerateRandomValue(Type type)
+    {
+        if (type == typeof(int))
+            return Random.Next();
+        if (type == typeof(float))
+            return (float)Random.NextDouble() * 100;
+        if (type == typeof(double))
+            return Random.NextDouble() * 100;
+        if (type == typeof(bool))
+            return Random.Next(2) == 1;
+        if (type == typeof(char))
+            return (char)Random.Next('A', 'Z' + 1);
+        if (type == typeof(byte))
+            return (byte)Random.Next(0, 256);
+        if (type == typeof(short))
+            return (short)Random.Next(short.MinValue, short.MaxValue);
+        if (type == typeof(long))
+            return (long)(Random.NextDouble() * long.MaxValue);
+        if (type == typeof(string))
+            return GenerateRandomString(10);
+        if (type.IsEnum)
+        {
+            var values = Enum.GetValues(type);
+            return values.GetValue(Random.Next(values.Length));
+        }
+
+        // Unsupported type
+        return null;
+    }
+
+    private static string GenerateRandomString(int length)
+    {
+        const string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+        return new string(Enumerable.Repeat(chars, length)
+            .Select(s => s[Random.Next(s.Length)]).ToArray());
+    }
+}