Question

1) One of functionalities of a compiler is to determine if variable names are correct. Here is the variable naming convention of Java programming language.

“Variable names are case-sensitive. A variable's name can be any legal identifier — an unlimited-length sequence of Unicode letters and digits, beginning with a letter, the dollar sign "$", or the underscore character "_". White space is not permitted. Subsequent characters may be letters, digits, dollar signs, or underscore characters.”

Also, you can assume that the input domain for this includes any length string with characters that developers can type using regular windows keyboard.

Suppose you are using equivalent partitioning technique to test the variable name verification module of the Java compiler.

a) Identify Equivalent Partitions based on the above description

b) Develop test cases in a tabular format given below based on your equivalent partitions above.

Test Case #

Partition Tested

Input(s)

Expected output

Answer 1

Possible partition: I cose sensitive : variables are cose - Sensitive 2. Storting characters : $, under score, alphabetic character 3. special character :$, underscore (-) 4. Length of character secuence. It does not contain any limit Test case partition text | - Input - уу output varid o 8 - X Y Z vaid, xyz, not eawal to Xyz valid - x y z es ee eo @xyz 6xyz m I to orxo o = d m es es valid vaid invalid invalid valid invaid valid A$ YUZ A@ yuz w w A_xyz AYYZ Invalid w xyz$- Valid + w XY Zxyz vand.