Casting from int to long

Author: alnuaimicoder

Api/src/UrlShortener.Core/Base62EncodingExtensions.cs

@@ -5,15 +5,15 @@ public static class Base62EncodingExtensions
     private const string Alphanumeric = "0123456789" +
                                         "abcdefghijklmnopqrstuvwxyz" +
                                         "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
-    public static string EncodeToBase62(this int number)
+    public static string EncodeToBase62(this long number)
     {
         if(number is 0) return Alphanumeric[0].ToString();
 
         var result = new Stack<char>();
 
         while (number > 0)
         {
-            result.Push(Alphanumeric[number % 62]);
+            result.Push(Alphanumeric[(int)(number % 62)]);
             number /= 62;
         }
 

Api/src/UrlShortener.Core/TokenProvider.cs

@@ -11,8 +11,8 @@ public void AssignRange(TokenRange tokenRange)
     {
         _tokenRange = tokenRange;
     }
-    public int GetToken()
+    public long GetToken()
     {
-        return _tokenRange!.Start;
+        return _tokenRange.Start;
     }
 }

Api/src/UrlShortener.Core/TokenRange.cs

@@ -1,3 +1,16 @@
 namespace UrlShortener.Core;
 
-public record TokenRange(int Start,int End);
+public record TokenRange
+{
+    public long Start { get; }
+    public long End { get; }
+
+    public TokenRange(long start, long end)
+    {
+        if(end< start)  
+            throw new ArgumentException("End must be greater than or equal to start");
+        
+        Start = start;
+        End = end;
+    }
+}

UrlShortener.Api.Core.Tests/TokenRangeScenarios.cs

@@ -0,0 +1,16 @@
+using UrlShortener.Core;
+
+namespace UrlShortener.Api.Core.Tests;
+
+public class TokenRangeScenarios
+{
+    [Fact]
+    public void When_start_token_is_greater_than_end_token_then_throws_exception()
+    {
+        var act = () => new TokenRange(10, 5);
+        
+        act.Should()
+            .Throw<ArgumentException>()
+            .WithMessage("End must be greater than or equal to start");
+    }
+}