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using VersOne.Epub.Schema;
namespace VersOne.Epub.Test.Unit.Schema.Ops.Navigation
{
public class Epub3NavSpanTests
{
private const string TEXT = "Text";
private const string TITLE = "Title";
private const string ALT = "Alt";
[Fact(DisplayName = "Constructing a Epub3NavSpan instance with non-null parameters should succeed")]
public void ConstructorWithNonNullParametersTest()
{
Epub3NavSpan epub3NavSpan = new(TEXT, TITLE, ALT);
Assert.Equal(TEXT, epub3NavSpan.Text);
Assert.Equal(TITLE, epub3NavSpan.Title);
Assert.Equal(ALT, epub3NavSpan.Alt);
}
[Fact(DisplayName = "Constructor should throw ArgumentNullException if text parameter is null")]
public void ConstructorWithNullTextTest()
{
Assert.Throws<ArgumentNullException>(() => new Epub3NavSpan(null!, TITLE, ALT));
}
[Fact(DisplayName = "Constructing a Epub3NavSpan instance with null title parameter should succeed")]
public void ConstructorWithNullTitleTest()
{
Epub3NavSpan epub3NavSpan = new(TEXT, null, ALT);
Assert.Equal(TEXT, epub3NavSpan.Text);
Assert.Null(epub3NavSpan.Title);
Assert.Equal(ALT, epub3NavSpan.Alt);
}
[Fact(DisplayName = "Constructing a Epub3NavSpan instance with null alt parameter should succeed")]
public void ConstructorWithNullAltTest()
{
Epub3NavSpan epub3NavSpan = new(TEXT, TITLE, null);
Assert.Equal(TEXT, epub3NavSpan.Text);
Assert.Equal(TITLE, epub3NavSpan.Title);
Assert.Null(epub3NavSpan.Alt);
}
}
}
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