Moved analyzer tests to its own project

Also moves tests to `./test` which makes it possible
for all test projects to share the same .editorconfig
files and similar.

test/Spectre.Console.Tests/Unit/RecorderTests.cs

@@ -0,0 +1,54 @@
+using System.Threading.Tasks;
+using Spectre.Console.Testing;
+using Spectre.Verify.Extensions;
+using VerifyXunit;
+using Xunit;
+
+namespace Spectre.Console.Tests.Unit
+{
+    [UsesVerify]
+    [ExpectationPath("Widgets/Recorder")]
+    public sealed class RecorderTests
+    {
+        [Fact]
+        [Expectation("Text")]
+        public Task Should_Export_Text_As_Expected()
+        {
+            // Given
+            var console = new TestConsole();
+            var recorder = new Recorder(console);
+
+            recorder.Write(new Table()
+                .AddColumns("Foo", "Bar", "Qux")
+                .AddRow("Corgi", "Waldo", "Zap")
+                .AddRow(new Panel("Hello World").RoundedBorder()));
+
+            // When
+            var result = recorder.ExportText();
+
+            // Then
+            return Verifier.Verify(result);
+        }
+
+        [Fact]
+        [Expectation("Html")]
+        public Task Should_Export_Html_Text_As_Expected()
+        {
+            // Given
+            var console = new TestConsole();
+            var recorder = new Recorder(console);
+
+            recorder.Write(new Table()
+                .AddColumns("[red on black]Foo[/]", "[green bold]Bar[/]", "[blue italic]Qux[/]")
+                .AddRow("[invert underline]Corgi[/]", "[bold strikethrough]Waldo[/]", "[dim]Zap[/]")
+                .AddRow(new Panel("[blue]Hello World[/]")
+                    .BorderColor(Color.Red).RoundedBorder()));
+
+            // When
+            var result = recorder.ExportHtml();
+
+            // Then
+            return Verifier.Verify(result);
+        }
+    }
+}