Fixes #2469 - Revamp file structure and namespace (#2471)

* initial commit

* All tests pass

* Updated readme

* Revert "All tests pass"

This reverts commit 94ac462350.

* Revert "initial commit"

This reverts commit 36d92cc4e5.

* Moved Terminal.Gui files around

* Nuked .Graphs namespace

* Nuked .Graphs namespace

* Nuked .Trees namespace

* Nuked .Configuration namespace

* Nuked .Configuration namespace

* All tests pass

* tweaked tests

* removed unneeded usings

* re-enabled scrollview tests

* move scrollview test to ScrollViewTests

* Moved view navigation related tests to separate cs file

* Moved view scrollbarview related tests ScrollBarTestse

* Refactored View tests into smaller files

* Refactored driver tests

* Fixed a ton of BUGBUGs

UnitTests/Text/UnicodeTests.cs

@@ -0,0 +1,87 @@
+using NStack;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Terminal.Gui;
+using Xunit;
+using Xunit.Abstractions;
+
+// Alias Console to MockConsole so we don't accidentally use Console
+using Console = Terminal.Gui.FakeConsole;
+
+namespace Terminal.Gui.TextTests {
+	public class UnicodeTests {
+		readonly ITestOutputHelper output;
+
+		public UnicodeTests (ITestOutputHelper output)
+		{
+			this.output = output;
+		}
+
+		[Theory]
+		[InlineData (0x0000001F, 0x241F)]
+		[InlineData (0x0000007F, 0x247F)]
+		[InlineData (0x0000009F, 0x249F)]
+		[InlineData (0x0001001A, 0x1001A)]
+		public void MakePrintable_Converts_Control_Chars_To_Proper_Unicode (uint code, uint expected)
+		{
+			var actual = ConsoleDriver.MakePrintable (code);
+
+			Assert.Equal (expected, actual.Value);
+		}
+
+		[Theory]
+		[InlineData (0x20)]
+		[InlineData (0x7E)]
+		[InlineData (0xA0)]
+		[InlineData (0x010020)]
+		public void MakePrintable_Does_Not_Convert_Ansi_Chars_To_Unicode (uint code)
+		{
+			var actual = ConsoleDriver.MakePrintable (code);
+
+			Assert.Equal (code, actual.Value);
+		}
+		
+		[Fact, AutoInitShutdown]
+		public void AddRune_On_Clip_Left_Or_Right_Replace_Previous_Or_Next_Wide_Rune_With_Space ()
+		{
+			var tv = new TextView () {
+				Width = Dim.Fill (),
+				Height = Dim.Fill (),
+				Text = @"これは広いルーンラインです。
+これは広いルーンラインです。
+これは広いルーンラインです。
+これは広いルーンラインです。
+これは広いルーンラインです。
+これは広いルーンラインです。
+これは広いルーンラインです。
+これは広いルーンラインです。"
+			};
+			var win = new Window ("ワイドルーン") { Width = Dim.Fill (), Height = Dim.Fill () };
+			win.Add (tv);
+			Application.Top.Add (win);
+			var lbl = new Label ("ワイドルーン。");
+			var dg = new Dialog ("テスト", 14, 4, new Button ("選ぶ"));
+			dg.Add (lbl);
+			Application.Begin (Application.Top);
+			Application.Begin (dg);
+			((FakeDriver)Application.Driver).SetBufferSize (30, 10);
+
+			var expected = @"
+┌┤ワイドルーン├──────────────┐
+│これは広いルーンラインです。│
+│これは広いルーンラインです。│
+│これは ┌┤テスト├────┐ です。│
+│これは │ワイドルーン│ です。│
+│これは │  [ 選ぶ ]  │ です。│
+│これは └────────────┘ です。│
+│これは広いルーンラインです。│
+│これは広いルーンラインです。│
+└────────────────────────────┘
+";
+
+			var pos = TestHelpers.AssertDriverContentsWithFrameAre (expected, output);
+			Assert.Equal (new Rect (0, 0, 30, 10), pos);
+		}
+	}
+}