public void UnionBothNull()
{
var fisU = File.Union(null, null);
Assert.IsInstanceOf <List <FileInfo> >(fisU);
Assert.AreEqual(0, fisU.Count);
}
public void RemoveDuplicateUnion()
{
var fisA = new List <FileInfo>
{
new FileInfo("z:\\a.txt")
};
var fisB = new List <FileInfo>
{
new FileInfo("z:\\a.txt"),
new FileInfo("z:\\b.txt")
};
var fisU = File.Union(fisA, fisB);
Assert.AreEqual(2, fisU.Count);
Assert.IsTrue(fisU.Any(f => f.FullName == "z:\\a.txt"));
Assert.IsTrue(fisU.Any(f => f.FullName == "z:\\b.txt"));
// nothing has changed
Assert.AreEqual(1, fisA.Count);
Assert.IsTrue(fisA.Any(f => f.FullName == "z:\\a.txt"));
Assert.AreEqual(2, fisB.Count);
Assert.IsTrue(fisB.Any(f => f.FullName == "z:\\a.txt"));
Assert.IsTrue(fisB.Any(f => f.FullName == "z:\\b.txt"));
}
public void UnionSecondListIsNullList()
{
var fis = new List <FileInfo>
{
new FileInfo("z:\\a.txt"),
new FileInfo("z:\\b.txt")
};
var fisU = File.Union(fis, null);
Assert.AreEqual(2, fisU.Count);
Assert.IsTrue(fisU.Any(f => f.FullName == "z:\\a.txt"));
Assert.IsTrue(fisU.Any(f => f.FullName == "z:\\b.txt"));
Assert.AreEqual(2, fis.Count);
Assert.IsTrue(fis.Any(f => f.FullName == "z:\\a.txt"));
Assert.IsTrue(fis.Any(f => f.FullName == "z:\\b.txt"));
}
public void UnionSecondListIsEmpty()
{
var fisA = new List <FileInfo>
{
new FileInfo("z:\\a.txt"),
new FileInfo("z:\\b.txt")
};
var fisB = new List <FileInfo>();
var fisU = File.Union(fisA, fisB);
Assert.AreEqual(2, fisU.Count);
Assert.IsTrue(fisU.Any(f => f.FullName == "z:\\a.txt"));
Assert.IsTrue(fisU.Any(f => f.FullName == "z:\\b.txt"));
// nothing has changed
Assert.AreEqual(2, fisA.Count);
Assert.IsTrue(fisA.Any(f => f.FullName == "z:\\a.txt"));
Assert.IsTrue(fisA.Any(f => f.FullName == "z:\\b.txt"));
Assert.AreEqual(0, fisB.Count);
}