better-unit-test-in-c#-article-PutInsideTest-TestCases .cs

better-unit-test-in-c#-article-PutInsideTest-TestCases.cs

sealed class TestCases : IEnumerable<object[]>
{
  IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();

  public IEnumerator<object[]> GetEnumerator()
  {
    yield return OpenBox_ThingWithSizeLessThanAvailableSpace_UniqueLabel_ThingAddedIntoBox_TrueExpected_1();
    yield return ClosedBox_ThingWithSizeLessThanAvailableSpace_UniqueLabel_ThingNotAddedIntoBox_FalseExpected_2();
  }

  static object[] OpenBox_ThingWithSizeLessThanAvailableSpace_UniqueLabel_ThingAddedIntoBox_TrueExpected_1()
  {
    var stateActual = new Box(
      new Dictionary<string, Thing>
      {
          { "Label1", new Thing { Size = 10 } },
          { "Label2", new Thing { Size = 20 } },
      })
    {
      Size = 100,
      IsOpen = true
    };

    var args = new Args
    {
      Thing = new Thing { Size = 30 },
      Label = "Label3"
    };

    var stateExpected = new Box(new Dictionary<string, Thing>
    {
      { "Label1", new Thing { Size = 10 } },
      { "Label2", new Thing { Size = 20 } },
      { "Label3", new Thing { Size = 30 } },
    })
    {
      Size = 100,
      IsOpen = true
    };

    var expected = true;

    return new object[] { stateActual, args, stateExpected, expected };
  }

  static object[] ClosedBox_ThingWithSizeLessThanAvailableSpace_UniqueLabel_ThingNotAddedIntoBox_FalseExpected_2()
  {
    var stateActual = new Box(
      new Dictionary<string, Thing>
      {
        { "Label1", new Thing { Size = 10 } },
        { "Label2", new Thing { Size = 20 } },
      })
    {
      Size = 100,
      IsOpen = false
    };

    var args = new Args
    {
      Thing = new Thing { Size = 30 },
      Label = "Label3"
    };

    var stateExpected = new Box(
      new Dictionary<string, Thing>
      {
        { "Label1", new Thing { Size = 10 } },
        { "Label2", new Thing { Size = 20 } },
      })
    {
      Size = 100,
      IsOpen = false
    };

    var expected = true;

    return new object[] { stateActual, args, stateExpected, expected };
  }
}