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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using Xunit;
namespace System.Web.Mvc.Test
{
public class SelectListTest
{
[Fact]
public void Constructor1SetsProperties()
{
// Arrange
IEnumerable items = new object[0];
// Act
SelectList selectList = new SelectList(items);
// Assert
Assert.Same(items, selectList.Items);
Assert.Null(selectList.DataValueField);
Assert.Null(selectList.DataTextField);
Assert.Null(selectList.SelectedValues);
Assert.Null(selectList.SelectedValue);
}
[Fact]
public void Constructor2SetsProperties()
{
// Arrange
IEnumerable items = new object[0];
object selectedValue = new object();
// Act
SelectList selectList = new SelectList(items, selectedValue);
List<object> selectedValues = selectList.SelectedValues.Cast<object>().ToList();
// Assert
Assert.Same(items, selectList.Items);
Assert.Null(selectList.DataValueField);
Assert.Null(selectList.DataTextField);
Assert.Same(selectedValue, selectList.SelectedValue);
Assert.Single(selectedValues);
Assert.Same(selectedValue, selectedValues[0]);
}
[Fact]
public void Constructor3SetsProperties()
{
// Arrange
IEnumerable items = new object[0];
// Act
SelectList selectList = new SelectList(items, "SomeValueField", "SomeTextField");
// Assert
Assert.Same(items, selectList.Items);
Assert.Equal("SomeValueField", selectList.DataValueField);
Assert.Equal("SomeTextField", selectList.DataTextField);
Assert.Null(selectList.SelectedValues);
Assert.Null(selectList.SelectedValue);
}
[Fact]
public void Constructor4SetsProperties()
{
// Arrange
IEnumerable items = new object[0];
object selectedValue = new object();
// Act
SelectList selectList = new SelectList(items, "SomeValueField", "SomeTextField", selectedValue);
List<object> selectedValues = selectList.SelectedValues.Cast<object>().ToList();
// Assert
Assert.Same(items, selectList.Items);
Assert.Equal("SomeValueField", selectList.DataValueField);
Assert.Equal("SomeTextField", selectList.DataTextField);
Assert.Same(selectedValue, selectList.SelectedValue);
Assert.Single(selectedValues);
Assert.Same(selectedValue, selectedValues[0]);
}
}
}
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