Creates a web application context (reactive or servlet based) and sets a
server.port=0Environment property (which usually triggers
listening on a random port). Often used in conjunction with a
LocalServerPort injected field on the test.
Returns the enum constant of this type with the specified name.
The string must match exactly an identifier used to declare an
enum constant in this type. (Extraneous whitespace characters are
name - the name of the enum constant to be returned.