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+using System;
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+using System.Collections.Generic;
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+using System.Linq;
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+using Terminal.Gui;
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+using Xunit;
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+
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+// Alias Console to MockConsole so we don't accidentally use Console
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+using Console = Terminal.Gui.FakeConsole;
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+
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+namespace Terminal.Gui.DrawingTests;
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+public class AttributeTests {
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+ [Fact]
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+ public void Constuctors_Constuct ()
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+ {
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+ var driver = new FakeDriver ();
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+ Application.Init (driver);
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+ driver.Init (() => { });
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+
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+ // Test parameterless constructor
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+ var attr = new Attribute ();
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+
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+ Assert.Equal (-1, attr.Value);
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+ Assert.Equal ((Color)Color.White, attr.Foreground);
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+ Assert.Equal ((Color)Color.Black, attr.Background);
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+
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+ // Test foreground, background
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+ var fg = new Color ();
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+ fg = (Color)Color.Red;
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+
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+ var bg = new Color ();
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+ bg = (Color)Color.Blue;
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+
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+ attr = new Attribute (fg, bg);
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+
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+ Assert.True (attr.Initialized);
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+ Assert.True (attr.HasValidColors);
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+ Assert.Equal (fg, attr.Foreground);
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+ Assert.Equal (bg, attr.Background);
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+
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+ attr = new Attribute (fg);
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+ Assert.True (attr.Initialized);
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+ Assert.True (attr.HasValidColors);
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+ Assert.Equal (fg, attr.Foreground);
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+ Assert.Equal (fg, attr.Background);
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+
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+ attr = new Attribute (bg);
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+ Assert.True (attr.Initialized);
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+ Assert.True (attr.HasValidColors);
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+ Assert.Equal (bg, attr.Foreground);
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+ Assert.Equal (bg, attr.Background);
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+
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+ driver.End ();
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+ Application.Shutdown ();
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+ }
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+
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+ [Fact]
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+ public void Implicit_Assign ()
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+ {
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+ var driver = new FakeDriver ();
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+ Application.Init (driver);
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+ driver.Init (() => { });
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+
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+ var attr = new Attribute ();
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+
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+ var value = 42;
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+ var fg = new Color ();
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+ fg = (Color)Color.Red;
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+
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+ var bg = new Color ();
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+ bg = (Color)Color.Blue;
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+
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+ // Test conversion to int
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+ attr = new Attribute (value, fg, bg);
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+ int value_implicit = attr.Value;
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+ Assert.Equal (value, value_implicit);
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+
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+ Assert.Equal (value, attr.Value);
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+
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+ driver.End ();
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+ Application.Shutdown ();
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+ }
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+
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+ [Fact]
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+ public void Make_SetsNotInitialized_NoDriver ()
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+ {
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+ var fg = new Color ();
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+ fg = (Color)Color.Red;
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+
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+ var bg = new Color ();
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+ bg = (Color)Color.Blue;
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+
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+ var a = Attribute.Make (fg, bg);
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+
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+ Assert.False (a.Initialized);
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+ }
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+
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+ [Fact]
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+ public void Make_Creates ()
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+ {
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+ var driver = new FakeDriver ();
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+ Application.Init (driver);
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+ driver.Init (() => { });
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+
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+ var fg = new Color ();
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+ fg = (Color)Color.Red;
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+
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+ var bg = new Color ();
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+ bg = (Color)Color.Blue;
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+
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+ var attr = Attribute.Make (fg, bg);
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+ Assert.True (attr.Initialized);
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+ Assert.Equal (fg, attr.Foreground);
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+ Assert.Equal (bg, attr.Background);
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+
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+ driver.End ();
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+ Application.Shutdown ();
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+ }
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+
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+ [Fact]
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+ public void Make_Creates_NoDriver ()
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+ {
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+
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+ var fg = new Color ();
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+ fg = (Color)Color.Red;
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+
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+ var bg = new Color ();
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+ bg = (Color)Color.Blue;
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+
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+ var attr = Attribute.Make (fg, bg);
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+ Assert.False (attr.Initialized);
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+ Assert.Equal (fg, attr.Foreground);
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+ Assert.Equal (bg, attr.Background);
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+ }
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+
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+ [Fact]
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+ public void Get_Asserts_NoDriver ()
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+ {
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+ Assert.Throws<InvalidOperationException> (() => Attribute.Get ());
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+ }
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+
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+ [Fact]
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+ public void Get_Gets ()
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+ {
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+ var driver = new FakeDriver ();
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+ Application.Init (driver);
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+ driver.Init (() => { });
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+
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+ var value = 42;
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+ var fg = new Color ();
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+ fg = (Color)Color.Red;
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+
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+ var bg = new Color ();
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+ bg = (Color)Color.Blue;
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+
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+ var attr = new Attribute (value, fg, bg);
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+
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+ driver.SetAttribute (attr);
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+
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+ var ret_attr = Attribute.Get ();
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+
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+ Assert.Equal (value, ret_attr.Value);
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+ Assert.Equal (fg, ret_attr.Foreground);
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+ Assert.Equal (bg, ret_attr.Background);
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+
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+ driver.End ();
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+ Application.Shutdown ();
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+ }
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+
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+ [Fact]
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+ [AutoInitShutdown]
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+ public void GetColors_Based_On_Value ()
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+ {
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+ var driver = Application.Driver;
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+ var attrValue = new Attribute (Color.Red, Color.Green).Value;
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+ driver.GetColors (attrValue, out ColorNames fg, out ColorNames bg);
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+
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+ Assert.Equal ((Color)Color.Red, (Color)fg);
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+ Assert.Equal ((Color)Color.Green, (Color)bg);
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+ }
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+
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+ [Fact]
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+ public void IsValid_Tests ()
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+ {
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+ var attr = new Attribute ();
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+ Assert.True (attr.HasValidColors);
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+
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+ attr = new Attribute (Color.Red, Color.Green);
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+ Assert.True (attr.HasValidColors);
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+
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+ //attr = new Attribute (Color.Red, (Color)(-1));
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+ //Assert.False (attr.HasValidColors);
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+
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+ //attr = new Attribute ((Color)(-1), Color.Green);
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+ //Assert.False (attr.HasValidColors);
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+
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+ //attr = new Attribute ((Color)(-1), (Color)(-1));
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+ //Assert.False (attr.HasValidColors);
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+ }
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+
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+ [Fact]
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+ public void Equals_NotInitialized ()
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+ {
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+ var attr1 = new Attribute (Color.Red, Color.Green);
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+ var attr2 = new Attribute (Color.Red, Color.Green);
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+
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+ Assert.True (attr1.Equals (attr2));
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+ Assert.True (attr2.Equals (attr1));
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+ }
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+
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+ [Fact]
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+ public void NotEquals_NotInitialized ()
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+ {
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+ var attr1 = new Attribute (Color.Red, Color.Green);
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+ var attr2 = new Attribute (Color.Green, Color.Red);
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+
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+ Assert.False (attr1.Equals (attr2));
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+ Assert.False (attr2.Equals (attr1));
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+ }
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+
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+ [Fact, AutoInitShutdown]
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+ public void Equals_Initialized ()
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+ {
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+ Assert.NotNull (Application.Driver);
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+
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+ var attr1 = new Attribute (Color.Red, Color.Green);
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+ var attr2 = new Attribute (Color.Red, Color.Green);
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+
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+ Assert.True (attr1.Equals (attr2));
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+ Assert.True (attr2.Equals (attr1));
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+ }
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+
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+ [Fact, AutoInitShutdown]
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+ public void NotEquals_Initialized ()
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+ {
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+ var attr1 = new Attribute (Color.Red, Color.Green);
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+ var attr2 = new Attribute (Color.Green, Color.Red);
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+
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+ Assert.False (attr1.Equals (attr2));
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+ Assert.False (attr2.Equals (attr1));
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+ }
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+}
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