Suppress warnings

Author: HashidaTKS

BrowserGuard.Tests/NetLogger/NetLogSenderTests.cs

@@ -237,14 +237,14 @@ public void KeepsWithoutRetryingWhenNoIntervalIsSet()
                 "https://collector.example.com/log", null, collector, spool,
                 retryInterval: TimeSpan.Zero);
             sender.Enqueue(Entry);
-            Assert.Equal(1, Kept(PendingPath).Length);
+            Assert.Single(Kept(PendingPath));
             var attempts = collector.Bodies.Count;
 
             collector.Status = HttpStatusCode.OK;
             Thread.Sleep(500);
 
             Assert.Equal(attempts, collector.Bodies.Count);
-            Assert.Equal(1, Kept(PendingPath).Length);
+            Assert.Single(Kept(PendingPath));
         }
 
         // A collector that answers with an error must not stop the ones after it.

BrowserGuard.Tests/UploadFileBridge/FileBridgeTests.cs

@@ -65,7 +65,7 @@ string Source(string name = "report.xlsx", string content = "hello")
         }
 
         string[] Copies => Directory.Exists(Destination)
-            ? Directory.GetFiles(Destination).Select(Path.GetFileName).OrderBy(name => name).ToArray()!
+            ? [.. Directory.GetFiles(Destination).Select(path => Path.GetFileName(path) ?? "").OrderBy(name => name)]
             : [];
 
         [Fact]

BrowserGuard/Configuration/ConfigLoader.cs

@@ -33,20 +33,20 @@ internal static Config LoadConfig()
             }
         }
 
-        internal static string GetConfigPath()
+        internal static string? GetConfigPath()
         {
             const string registryPath = @"SOFTWARE\BrowserGuard";
             const string valueName = "ConfigFile";
             try
             {
-                using (RegistryKey key = Registry.LocalMachine.OpenSubKey(registryPath))
+                using (RegistryKey? key = Registry.LocalMachine.OpenSubKey(registryPath))
                 {
                     if (key == null)
                     {
                         Console.Error.WriteLine($"cannot read {registryPath}: key not found");
                         return null;
                     }
-                    object value = key.GetValue(valueName);
+                    object? value = key.GetValue(valueName);
                     if (value is string configFile)
                     {
                         return configFile;