in c# i need to  Create an application named TurningDemo that creates instances of four classes: Page, Corner, Pancake, and Leaf. Create an interface named ITurnable that contains a single method named Turn(). The classes named Page, Corner, Pancake, and Leaf implement ITurnable. Create each class’s Turn() method to display an appropriate message. For example: The Page’s Turn() method should display You turn a page in a book. The Corner’s Turn() method should display You turn corners to go around the block. The Pancake's Turn() method should display You turn a pancake when it's done on one side. The Leaf's Turn() method should display A leaf turns colors in the fall. i keep getting the errors Unit Test Incomplete Page class defined Build Status Build Failed

Microsoft Visual C#
7th Edition
ISBN:9781337102100
Author:Joyce, Farrell.
Publisher:Joyce, Farrell.
Chapter10: Introduction To Inheritance
Section: Chapter Questions
Problem 8E: Create an application named TurningDemo that creates instances of four classes: Page, Corner,...
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in c# i need to 

Create an application named TurningDemo that creates instances of four classes: Page, Corner, Pancake, and Leaf.

Create an interface named ITurnable that contains a single method named Turn(). The classes named Page, Corner, Pancake, and Leaf implement ITurnable.

Create each class’s Turn() method to display an appropriate message. For example:

The Page’s Turn() method should display You turn a page in a book.
The Corner’s Turn() method should display You turn corners to go around the block.
The Pancake's Turn() method should display You turn a pancake when it's done on one side.
The Leaf's Turn() method should display A leaf turns colors in the fall.
i keep getting the errors

Unit Test
Incomplete
Page class defined

Build Status
Build Failed
Build Output

Compilation failed: 3 error(s), 0 warnings

NtTest65b2de8e.cs(12,26): error CS0246: The type or namespace name `ITurnable' could not be found. Are you missing `TurningDemo' using directive?
NtTest65b2de8e.cs(23,7): error CS0246: The type or namespace name `Page' could not be found. Are you missing `TurningDemo' using directive?
NtTest65b2de8e.cs(24,7): error CS0841: A local variable `page' cannot be used before it is declared
Test Contents
[TestFixture]
public class PageClassTest
{
  [Test]
  public void PageTest()
  {
    Assert.IsTrue(typeof(ITurnable).IsAssignableFrom(typeof(Page)),
    "`Page` class should implement `IRecoverable` class");
  }

  [Test]
  public void PageTest2()
  {
    using (StringWriter sw = new StringWriter())
    {
      Console.SetOut(sw);

      Page page = new Page();
      page.Turn();

      string expected = "You turn a page in a book";
      Assert.AreEqual(expected, sw.ToString().Trim());
    }
  }
}

Unit Test
Incomplete

Leaf class defined

Build Status
Build Failed
Build Output

Compilation failed: 3 error(s), 0 warnings

NtTest0aa0f224.cs(12,26): error CS0246: The type or namespace name `ITurnable' could not be found. Are you missing `TurningDemo' using directive?
NtTest0aa0f224.cs(23,7): error CS0246: The type or namespace name `Leaf' could not be found. Are you missing `TurningDemo' using directive?
NtTest0aa0f224.cs(24,7): error CS0841: A local variable `leaf' cannot be used before it is declared
Test Contents
[TestFixture]
public class LeafClassTest
{
  [Test]
  public void LeafTest()
  {
    Assert.IsTrue(typeof(ITurnable).IsAssignableFrom(typeof(Leaf)),
    "`Leaf` class should implement `IRecoverable` class");
  }

  [Test]
  public void LeafTest2()
  {
    using (StringWriter sw = new StringWriter())
    {
      Console.SetOut(sw);

      Leaf leaf = new Leaf();
      leaf.Turn();

      string expected = "A leaf turns colors in the fall";
      Assert.AreEqual(expected, sw.ToString().Trim());
    }
  }
}

Unit Test

Incomplete
Pancake class defined

Build Status
Build Failed
Build Output
Compilation failed: 3 error(s), 0 warnings

NtTest6579ef66.cs(12,26): error CS0246: The type or namespace name `ITurnable' could not be found. Are you missing `TurningDemo' using directive?
NtTest6579ef66.cs(23,7): error CS0246: The type or namespace name `Pancake' could not be found. Are you missing `TurningDemo' using directive?
NtTest6579ef66.cs(24,7): error CS0841: A local variable `pancake' cannot be used before it is declared
Test Contents
[TestFixture]
public class PancakeClassTest
{
  [Test]
  public void PancakeTest()
  {
    Assert.IsTrue(typeof(ITurnable).IsAssignableFrom(typeof(Pancake)),
    "`Pancake` class should implement `IRecoverable` class");
  }

  [Test]
  public void PancakeTest2()
  {
    using (StringWriter sw = new StringWriter())
    {
      Console.SetOut(sw);

      Pancake pancake = new Pancake();
      pancake.Turn();

      string expected = "You turn a pancake when it's done on one side";
      Assert.AreEqual(expected, sw.ToString().Trim());
    }
  }
}

Unit Test

Incomplete
Corner class defined

Build Status
Build Failed
Build Output
Compilation failed: 3 error(s), 0 warnings

NtTestc1345f97.cs(12,26): error CS0246: The type or namespace name `ITurnable' could not be found. Are you missing `TurningDemo' using directive?
NtTestc1345f97.cs(23,7): error CS0246: The type or namespace name `Corner' could not be found. Are you missing `TurningDemo' using directive?
NtTestc1345f97.cs(24,7): error CS0841: A local variable `corner' cannot be used before it is declared
Test Contents
[TestFixture]
public class CornerClassTest
{
  [Test]
  public void CornerTest()
  {
    Assert.IsTrue(typeof(ITurnable).IsAssignableFrom(typeof(Corner)),
    "`Corner` class should implement `IRecoverable` class");
  }

  [Test]
  public void CornerTest2()
  {
    using (StringWriter sw = new StringWriter())
    {
      Console.SetOut(sw);

      Corner corner = new Corner();
      corner.Turn();

      string expected = "You turn corners to go around the block";
      Assert.AreEqual(expected, sw.ToString().Trim());
    }
  }
}

 

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