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\begin{vdm_al}
class RotorTest
is subclass of TestCase
values
refcfg : inmap nat to nat =
{ 1 |-> 2, 3 |-> 4};
rotcfg : inmap nat to nat =
{ 1 |-> 1, 2 |-> 3, 3 |-> 2, 4 |-> 4}
instance variables
alph : Alphabet
operations
public RotorTest: seq of char ==> RotorTest
RotorTest(nm) == name := nm;
protected SetUp: () ==> ()
SetUp () == alph := new Alphabet("ABCD");
protected SimpleTest: () ==> ()
SimpleTest () ==
( dcl tc : Rotor := new Rotor(1,1,alph,rotcfg);
tc.SetNext(new Reflector(1,alph,refcfg));
AssertTrue(tc.Substitute(1) = 3);
AssertTrue(tc.Substitute(2) = 4);
AssertTrue(tc.Substitute(3) = 1);
AssertTrue(tc.Substitute(4) = 2);
tc.Rotate();
AssertTrue(tc.Substitute(1) = 2);
AssertTrue(tc.Substitute(2) = 1);
AssertTrue(tc.Substitute(3) = 4);
AssertTrue(tc.Substitute(4) = 3);
tc.Rotate();
AssertTrue(tc.Substitute(1) = 3);
AssertTrue(tc.Substitute(2) = 4);
AssertTrue(tc.Substitute(3) = 1);
AssertTrue(tc.Substitute(4) = 2);
tc.Rotate();
AssertTrue(tc.Substitute(1) = 2);
AssertTrue(tc.Substitute(2) = 1);
AssertTrue(tc.Substitute(3) = 4);
AssertTrue(tc.Substitute(4) = 3) );
protected ComplexTest: () ==> ()
ComplexTest () ==
( dcl tc1 : Rotor := new Rotor(1,1,alph,rotcfg),
tc2 : Rotor := new Rotor(1,1,alph,rotcfg);
tc1.SetNext(new Reflector(1,alph,refcfg));
tc2.SetNext(tc1);
AssertTrue(tc2.Substitute(1) = 2);
AssertTrue(tc2.Substitute(2) = 1);
AssertTrue(tc2.Substitute(3) = 4);
AssertTrue(tc2.Substitute(4) = 3);
tc2.Rotate();
AssertTrue(tc2.Substitute(1) = 2);
AssertTrue(tc2.Substitute(2) = 1);
AssertTrue(tc2.Substitute(3) = 4);
AssertTrue(tc2.Substitute(4) = 3);
tc2.Rotate();
AssertTrue(tc2.Substitute(1) = 3);
AssertTrue(tc2.Substitute(2) = 4);
AssertTrue(tc2.Substitute(3) = 1);
AssertTrue(tc2.Substitute(4) = 2);
tc2.Rotate();
AssertTrue(tc2.Substitute(1) = 2);
AssertTrue(tc2.Substitute(2) = 1);
AssertTrue(tc2.Substitute(3) = 4);
AssertTrue(tc2.Substitute(4) = 3);
tc2.Rotate();
AssertTrue(tc2.Substitute(1) = 3);
AssertTrue(tc2.Substitute(2) = 4);
AssertTrue(tc2.Substitute(3) = 1);
AssertTrue(tc2.Substitute(4) = 2);
tc2.Rotate();
AssertTrue(tc2.Substitute(1) = 2);
AssertTrue(tc2.Substitute(2) = 1);
AssertTrue(tc2.Substitute(3) = 4);
AssertTrue(tc2.Substitute(4) = 3);
tc2.Rotate();
AssertTrue(tc2.Substitute(1) = 2);
AssertTrue(tc2.Substitute(2) = 1);
AssertTrue(tc2.Substitute(3) = 4);
AssertTrue(tc2.Substitute(4) = 3);
tc2.Rotate();
AssertTrue(tc2.Substitute(1) = 4);
AssertTrue(tc2.Substitute(2) = 3);
AssertTrue(tc2.Substitute(3) = 2);
AssertTrue(tc2.Substitute(4) = 1) );
protected RunTest: () ==> ()
RunTest () == ( SimpleTest(); ComplexTest() );
protected TearDown: () ==> ()
TearDown () == skip;
end RotorTest
\end{vdm_al}
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