Added BarTests

UnitTests/Views/BarTests.cs

@@ -0,0 +1,21 @@
+using JetBrains.Annotations;
+
+namespace Terminal.Gui.ViewsTests;
+
+[TestSubject (typeof (Bar))]
+public class BarTests
+{
+    [Fact]
+    public void Constructor_Defaults ()
+    {
+        var bar = new Bar ();
+
+        Assert.NotNull (bar);
+        Assert.True (bar.CanFocus);
+        Assert.IsType<DimAuto> (bar.Width);
+        Assert.IsType<DimAuto> (bar.Height);
+
+        // TOOD: more
+    }
+
+}