Allow Overriding the Test Name

Description

It would be very handy if we could control the TestName so we could create nice human-readable test names that show up in the test explorer.

Test frameworks like Mocha support this 😊. One example.

Reference: SO Post

Expected behavior

[TestMethod("My user friendly test name with special characters like | or * or \\ etc.")]
public void MyTest()
{
    ...
}

or

[TestMethod()]
[TestName("My user friendly test name with special characters like | or * or \\ etc.")]
public void MyTest()
{
    ...
}

Actual behavior

The method name is the test name 😪.

[nohwnd]

@mdpopescu was fixed in #715

[mdpopescu]

Nice, I just discovered this!

One observation: the parameter description on the constructor here is incorrect:

/// <param name="displayName">Message specifies reason for ignoring.</param>
public TestMethodAttribute(string displayName)

It was probably copied from Ignore and hasn’t been changed correctly.