public void Clear_DisplayBoxGetsCleared()
{
//Set up
int boxLines = 10;
int boxCols = 10;
DisplayBorder border1 = new DisplayBorder('#', 1);
DisplayBorder border2 = new DisplayBorder('#', 1);
DisplayBox box1 = new DisplayBox("Box1", 0, 0, boxCols, boxLines, border1);
DisplayBox box2 = new DisplayBox("Box2", 0, boxLines, boxCols, boxLines, border2);
DisplayScreen screen = new DisplayScreen(10, 20);
screen.Add(box1);
screen.Add(box2);
screen.LoadBorders();
screen.WriteString("Box1", "SomeText", ConsoleColor.Black, ConsoleColor.White, 0, 0);
screen.WriteString("Box2", "SomeText", ConsoleColor.Black, ConsoleColor.White, 0, 0);
string expectedString1 = string.Concat(Enumerable.Repeat(new string(' ', 10) + Environment.NewLine, 10));
//Action
screen.Clear("Box1");
StringWriter sw = new StringWriter();
Console.SetOut(sw);
screen.PrintScreen();
int splitPtr = (boxCols + 2) * boxLines;
string actualString1 = sw.ToString().Substring(0, splitPtr);
string actualString2 = sw.ToString().Substring(splitPtr);
//Assertion
Assert.Equal(expectedString1, actualString1); // Box1 should be cleared
Assert.NotEqual(expectedString1, actualString2); // but not Box2
}
public void Clear_OutputGetsCleared()
{
//Set up
int lines = 10;
int cols = 10;
DisplayBorder border = new DisplayBorder('#', 1);
DisplayBox box = new DisplayBox("MyBox", 0, 0, cols, lines, border);
DisplayScreen screen = new DisplayScreen(cols, lines);
screen.Add(box);
screen.LoadBorders();
screen.WriteString("MyBox", "SomeText", ConsoleColor.Black, ConsoleColor.White, 0, 0);
string expectedString = string.Concat(Enumerable.Repeat(new string(' ', 10) + Environment.NewLine, 10));
//Action
screen.Clear();
StringWriter sw = new StringWriter();
Console.SetOut(sw);
screen.PrintScreen();
string actualString = sw.ToString();
//Assertion
Assert.True(expectedString == actualString);
}