Add full update integration test

test/TestApp/ConsoleLogger.cs

@@ -0,0 +1,19 @@
+using Microsoft.Extensions.Logging;
+
+class ConsoleLogger : ILogger
+{
+    public IDisposable BeginScope<TState>(TState state) where TState : notnull
+    {
+        return null;
+    }
+
+    public bool IsEnabled(LogLevel logLevel)
+    {
+        return true;
+    }
+
+    public void Log<TState>(LogLevel logLevel, EventId eventId, TState state, Exception exception, Func<TState, Exception, string> formatter)
+    {
+        Console.WriteLine(formatter(state, exception));
+    }
+}

test/TestApp/Const.cs

@@ -0,0 +1 @@
+class Const { public const string TEST_STRING = "Hello, World!"; }

test/TestApp/Program.cs

@@ -0,0 +1,64 @@
+using Squirrel;
+using Squirrel.Locators;
+
+try {
+    if (args.Length >= 1 && args[0].StartsWith("--squirrel")) {
+        // squirrel hooks
+        File.AppendAllText(Path.Combine(AppContext.BaseDirectory, "args.txt"), String.Join(" ", args) + Environment.NewLine);
+        return 0;
+    }
+
+    if (args.Length == 1 && args[0] == "version") {
+        var locator = SquirrelLocator.GetDefault(new ConsoleLogger());
+        Console.WriteLine(locator.CurrentlyInstalledVersion);
+        return 0;
+    }
+
+    if (args.Length == 1 && args[0] == "test") {
+        Console.WriteLine(Const.TEST_STRING);
+        return 0;
+    }
+
+    if (args.Length == 2) {
+        if (args[0] == "check") {
+            var um = new UpdateManager(args[1], null, new ConsoleLogger());
+            var info = um.CheckForUpdates();
+            if (info == null) {
+                Console.WriteLine("no updates");
+                return 0;
+            } else {
+                Console.WriteLine("update: " + info.TargetFullRelease.Version);
+                return 0;
+            }
+        }
+
+        if (args[0] == "download") {
+            var um = new UpdateManager(args[1], null, new ConsoleLogger());
+            var info = um.CheckForUpdates();
+            if (info == null) {
+                Console.WriteLine("no updates");
+                return -1;
+            }
+            um.DownloadUpdates(info, (x) => Console.WriteLine(x));
+            return 0;
+        }
+
+        if (args[0] == "apply") {
+            var um = new UpdateManager(args[1], null, new ConsoleLogger());
+            if (!um.IsUpdatePendingRestart) {
+                Console.WriteLine("not pending restart");
+                return -1;
+            }
+            Console.WriteLine("applying...");
+            um.ApplyUpdatesAndExit();
+            return 0;
+        }
+    }
+
+} catch (Exception ex) {
+    Console.WriteLine("exception: " + ex.ToString());
+    return -1;
+}
+
+Console.WriteLine("Invalid args: " + String.Join(", ", args));
+return -1;

test/TestApp/TestApp.csproj

@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\Squirrel\Squirrel.csproj" />
+  </ItemGroup>
+
+</Project>