public void Constructor_WhenArgumentsValid_SetsProperties()
{
var superType = new FileType("superId", "superDescription", null);
var type = new FileType("id", "description", superType);
Assert.AreEqual("id", type.Id);
Assert.AreEqual("description", type.Description);
Assert.AreEqual(superType, type.SuperType);
}
public void IsSameOrSubtypeOf_WhenOtherTypeIsASuperType_ReturnsTrue()
{
var superSuperType = new FileType("superSuperId", "superSuperDescription", null);
var superType = new FileType("superId", "superDescription", superSuperType);
var type = new FileType("id", "description", superType);
Assert.IsTrue(type.IsSameOrSubtypeOf(superType));
Assert.IsTrue(type.IsSameOrSubtypeOf(superSuperType));
}
/// <summary>
/// Creates a file type object.
/// </summary>
/// <param name="id">The file type id.</param>
/// <param name="description">The file type description.</param>
/// <param name="superType">The super type of the file type, or null if none.</param>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="id"/>
/// or <paramref name="description"/> is null.</exception>
/// <exception cref="ArgumentException">Thrown if <paramref name="id"/> is empty.</exception>
public FileType(string id, string description, FileType superType)
{
if (id == null)
throw new ArgumentNullException("id");
if (id.Length == 0)
throw new ArgumentException("The file type id must not be empty.", "id");
if (description == null)
throw new ArgumentNullException("description");
this.id = id;
this.description = description;
this.superType = superType;
}
public void IsSameOrSubtypeOfAny_WhenOtherTypesIsNull_Throws()
{
var type = new FileType("id", "description", null);
Assert.Throws<ArgumentNullException>(() => type.IsSameOrSubtypeOfAny(null));
}
public void IsSameOrSubtypeOf_WhenOtherTypeIsUnrelated_ReturnsFalse()
{
var superType = new FileType("superId", "superDescription", null);
var type = new FileType("id", "description", superType);
var unrelatedType = new FileType("otherId", "otherDescription", superType);
Assert.IsFalse(type.IsSameOrSubtypeOf(unrelatedType));
}
public void IsSameOrSubtypeOf_WhenOtherTypeIsSame_ReturnsTrue()
{
var type = new FileType("id", "description", null);
Assert.IsTrue(type.IsSameOrSubtypeOf(type));
}
public void ToString_Always_ReturnsIdConcatenatedWithDescription()
{
var type = new FileType("id", "description", null);
Assert.AreEqual("id: description", type.ToString());
}
public void IsSameOrSubtypeOfAny_WhenOtherTypesContainsUnrelatedAndSame_ReturnsTrue()
{
var superType = new FileType("superId", "superDescription", null);
var type = new FileType("id", "description", superType);
var unrelatedType = new FileType("otherId", "otherDescription", superType);
Assert.IsTrue(type.IsSameOrSubtypeOfAny(unrelatedType, type));
}
public void IsSameOrSubtypeOfAny_WhenOtherTypesIsEmpty_ReturnsFalse()
{
var type = new FileType("id", "description", null);
Assert.IsFalse(type.IsSameOrSubtypeOfAny());
}
/// <summary>
/// Returns true if this file type is equal to or is a subtype of some other type.
/// </summary>
/// <param name="otherType">The other type.</param>
/// <returns>True if the condition is satisfied.</returns>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="otherType"/> is null.</exception>
public bool IsSameOrSubtypeOf(FileType otherType)
{
if (otherType == null)
throw new ArgumentNullException("otherType");
FileType currentType = this;
do
{
if (currentType == otherType)
return true;
currentType = currentType.SuperType;
}
while (currentType != null);
return false;
}
/// <summary>
/// Returns true if the file type is the same or a subtype of one of those specified by <see cref="FileTypes"/>.
/// </summary>
/// <param name="fileType">The file type.</param>
/// <param name="fileTypeManager">The file type manager used to resolve file type ids to file types.</param>
/// <returns>True if the framework is compatible.</returns>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="fileType"/> or <paramref name="fileTypeManager"/> is null.</exception>
public bool IsFrameworkCompatibleWithFileType(FileType fileType, IFileTypeManager fileTypeManager)
{
if (fileType == null)
throw new ArgumentNullException("fileType");
if (fileTypeManager == null)
throw new ArgumentNullException("fileTypeManager");
foreach (string fileTypeId in FileTypes)
{
FileType supportedFileType = fileTypeManager.GetFileTypeById(fileTypeId);
if (fileType.IsSameOrSubtypeOf(supportedFileType))
return true;
}
return false;
}
