Fields
 / 1  -is there a field public static final String TEST_VERSION equal to "C"?
 
Constructors
 / 1  -is there a private constructor?
 
Methods
-join
 / 1 -are the strings concatenated somehow?
 / 2 -is the correct value returned?
 
-shortest
 / 1 -correctly throws the expected exception?
 / 2 -returns the correct value when s is shorter than t?
 / 2 -returns the correct value when t is shorter than s?
 
-distance
 / 1 -is there a loop over the characters of the strings?
 / 1 -in the loop body, are corresponding characters compared correctly?
 / 1 -in the loop body, is a counter incremented for matching characters?
 / 1 -is the correct result returned?
 
-mostFrequent
 / 4 -is the correct value returned?