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// RUN: %dafny /compile:0 /print:"%t.print" /dprint:"%t.dprint" "%s" > "%t"
// RUN: %diff "%s.expect" "%t"
//everything should work OK in this test file
trait T1
{
function method Plus (x:int, y:int) : int
requires x>y;
{
x + y
}
function method bb(x:int):int
requires x>10;
function method BodyLess1(a:int) : int
requires a > 0;
function method dd(a:int) : int
method Testing()
}
class C1 extends T1
{
function method dd(x:int):int
{
2
}
method Testing()
{
var x:int := 11;
x := bb(x);
}
function method bb(x:int):int
requires x >10;
{
x
}
function method BodyLess1(bda:int) : int
requires bda > (-10);
{
2
}
method CallBodyLess(x:int)
requires x > (-10);
{
var k:int := BodyLess1(x);
assert (k==2);
}
}
trait T2
{
function method F(x: int): int
requires x < 100;
ensures F(x) < 100;
method M(x: int) returns (y: int)
requires 0 <= x;
ensures x < y;
}
class C2 extends T2
{
function method F(x: int): int
requires x < 100;
ensures F(x) < 100;
{
x
}
method M(x: int) returns (y: int)
requires -2000 <= x; // a more permissive precondition than in the interface
ensures 2*x < y; // a more detailed postcondition than in the interface
{
y := (2 * x) + 1;
}
}
trait T3
{
function method F(y: int): int
function method G(y: int): int { 12 }
method M(y: int)
method N(y: int) {
var a:int := 100;
assert a==100;
}
}
class C3 extends T3
{
function method NewFunc (a:int, b:int) : int
{
a + b
}
function method F(y: int): int { 20 }
method M(y: int) {
var a:int := 100;
assert a==100;
}
}
trait t
{
function f(s2:int):int
ensures f(s2) > 0;
//requires s != null && s.Length > 1;
//reads s, s2;
}
class c extends t
{
function f(s3:int):int
ensures f(s3) > 1;
//requires s0 != null && s0.Length > (0);
//reads s0;
{
2
}
}
trait TT
{
static function method M(a:int, b:int) : int
ensures M(a,b) == a + b;
{
a + b
}
}
class CC extends TT
{
method Testing(a:int,b:int)
{
assert (TT.M(a,b) == a + b);
}
}
trait T4
{
function method F(y: int): int
function method G(y: int): int
{
100
}
method M(y: int) returns (kobra:int)
requires y > 0;
ensures kobra > 0;
method N(y: int)
{
var x: int;
var y : int;
y := 10;
x := 1000;
y := y + x;
}
}
class C4 extends T4
{
function method F(y: int): int
{
200
}
method M(kk:int) returns (ksos:int)
requires kk > (-1);
ensures ksos > 0;
{
ksos:=10;
}
}
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