Common method for outputting arrays and lists of any type

In unit tests I might want to output the results of a returned list of any type. Instead of writing a new method for each type, here are some techniques with thanks to:

http://stackoverflow.com/questions/9655262/common-method-for-printing-arrays-and-lists-of-any-types

Using Join

Split is a useful function, here is the reverse Join

int[] actual = new int[] {1,2,3}

string actual = new string[] {“one”, “two”, “three”}

TestContext.WriteLine(string.Join(“, “, actual));

 

Using Generics

public void PrintCollection<T>(IEnumerable<T> col)
{
foreach (var item in col) TestContext.WriteLine(item);
}

 

Using ForEach(Action a)

http://msdn.microsoft.com/en-us/library/bwabdf9z(v=vs.110).aspx

[TestMethod()]
publicvoid AListTest()
{
List<string> target = newList<string>();
target.ForEach(PrintCollection2);
}

privatevoid PrintCollection2(string s)
{
TestContext.WriteLine(s);
}