Add PairingService with safe alphabet and 10-min TTL

2026-06-11 18:53:32 +00:00
parent 720583de0a
commit db5c4e59a4
2 changed files with 112 additions and 0 deletions
@@ -0,0 +1,28 @@
+using backend.Pairing;
+using FluentAssertions;
+using Xunit;
+
+namespace backend.tests;
+
+public class PairingServiceTests
+{
+    [Fact]
+    public void Generated_codes_use_only_safe_alphabet_and_are_8_chars()
+    {
+        var svc = new PairingService();
+        for (var i = 0; i < 50; i++)
+        {
+            var code = svc.GenerateCode();
+            code.Length.Should().Be(8);
+            code.Should().MatchRegex("^[A-HJ-KM-NP-Z2-9]+$");
+        }
+    }
+
+    [Fact]
+    public void Generated_codes_are_not_all_identical()
+    {
+        var svc = new PairingService();
+        var codes = Enumerable.Range(0, 20).Select(_ => svc.GenerateCode()).ToHashSet();
+        codes.Count.Should().BeGreaterThan(15);
+    }
+}