Commit a1495b48: Added CalculatePreviousPage and CalculateNextPage to IPagedList and PagedList...

Added CalculatePreviousPage and CalculateNextPage to IPagedList and PagedList...

a1495b48

Pedro Silva

committed May 16, 2020

master

succeeded

Files

Details



	D20Tek.Common
	D20Tek.Common.xml
	D20Tek.Common.Shared/DataTypes/Collections
	IPagedList.cs
	PagedListBase.cs
	D20Tek.Common.Standard
	D20Tek.Common.Standard.xml
	D20Tek.Common.UnitTests/DataTypes/Collections
	PagedListTests.cs

D20Tek.Common.xml

+18

/D20Tek.Common/D20Tek.Common.xml

View

</member>

</member>

</member>

</member>

<param name="index">Index of element to get.</param>

<returns>Element at specified index.</returns>

</member>

Calculates the value of the previous page number from the current page.

</summary>

<returns>Previous page number.</returns>

</member>

Calculates the value of the next page number from the current page.

</summary>

<returns>Previous page number.</returns>

</member>

Class that represents a list that has been separated into different pages.

IPagedList.cs

+12

/D20Tek.Common.Shared/DataTypes/Collections/IPagedList.cs

View

/// <param name="index">Index of element to get.</param>

/// <returns>Element at specified index.</returns>

T this[int index] { get; }

/// <summary>

/// Calculates the value of the previous page number from the current page.

/// </summary>

/// <returns>Previous page number.</returns>

int CalculatePreviousPage();

/// <summary>

/// Calculates the value of the next page number from the current page.

/// </summary>

/// <returns>Previous page number.</returns>

int CalculateNextPage();

}

PagedListBase.cs

+14

/D20Tek.Common.Shared/DataTypes/Collections/PagedListBase.cs

View

/// <typeparam name="T">Type of element in the list.</typeparam>

public abstract class PagedListBase<T> : IPagedList<T>

{

private const int DefaultStartingPage = 1;

/// <summary>

/// Initializes a new instance of the <see cref="PagedListBase{T}"/> class.

/// </summary>

public T this[int index] => this.PagedView[index];

/// <inheritdoc/>

public int CalculatePreviousPage()

{

return Math.Max(this.PageNumber - 1, DefaultStartingPage);

}

/// <inheritdoc/>

public int CalculateNextPage()

{

return Math.Min(this.PageNumber + 1, this.PageCount);

}

/// <inheritdoc/>

public IEnumerator<T> GetEnumerator()

{

return this.PagedView.GetEnumerator();

D20Tek.Common.Standard.xml

+18

/D20Tek.Common.Standard/D20Tek.Common.Standard.xml

View

</member>

</member>

</member>

</member>

<param name="index">Index of element to get.</param>

<returns>Element at specified index.</returns>

</member>

Calculates the value of the previous page number from the current page.

</summary>

<returns>Previous page number.</returns>

</member>

Calculates the value of the next page number from the current page.

</summary>

<returns>Previous page number.</returns>

</member>

Class that represents a list that has been separated into different pages.

PagedListTests.cs

+72

/D20Tek.Common.UnitTests/DataTypes/Collections/PagedListTests.cs

View

Assert.AreEqual(5, list.Count);

Assert.IsNotNull(list.GetEnumerator());

}

[TestMethod]

public void CalculatePreviousPage_AtOtherPage()

{

// setup

var full = new List<int> { 4, 8, 2, 20, 12, 6, 10, 100, 3 };

var list = new PagedList<int>(full, 2, 5);

// test

var prev = list.CalculatePreviousPage();

// validate

Assert.IsNotNull(list);

Assert.AreEqual(2, list.PageNumber);

Assert.IsTrue(list.HasPreviousPage);

Assert.IsFalse(list.HasNextPage);

Assert.AreEqual(1, prev);

}

[TestMethod]

public void CalculatePreviousPage_AtFirstPage()

{

// setup

var full = new List<int> { 4, 8, 2, 20, 12, 6, 10, 100, 3 };

var list = new PagedList<int>(full, 1, 5);

// test

var prev = list.CalculatePreviousPage();

// validate

Assert.IsNotNull(list);

Assert.AreEqual(1, list.PageNumber);

Assert.IsFalse(list.HasPreviousPage);

Assert.IsTrue(list.HasNextPage);

Assert.AreEqual(1, prev);

}

[TestMethod]

public void CalculateNextPage_AtLastPage()

{

// setup

var full = new List<int> { 4, 8, 2, 20, 12, 6, 10, 100, 3 };

var list = new PagedList<int>(full, 2, 5);

// test

var next = list.CalculateNextPage();

// validate

Assert.IsNotNull(list);

Assert.AreEqual(2, list.PageNumber);

Assert.IsTrue(list.HasPreviousPage);

Assert.IsFalse(list.HasNextPage);

Assert.AreEqual(2, next);

}

[TestMethod]

public void CalculateNextPage_AtOtherPage()

{

// setup

var full = new List<int> { 4, 8, 2, 20, 12, 6, 10, 100, 3 };

var list = new PagedList<int>(full, 1, 5);

// test

var next = list.CalculateNextPage();

// validate

Assert.IsNotNull(list);

Assert.AreEqual(1, list.PageNumber);

Assert.IsFalse(list.HasPreviousPage);

Assert.IsTrue(list.HasNextPage);

Assert.AreEqual(2, next);

}