public void CachedHashCodeExistsExpr()
{
var x = new BoundVariable(Token.NoToken, new TypedIdent(Token.NoToken, "x", BasicType.Int));
var y = new BoundVariable(Token.NoToken, new TypedIdent(Token.NoToken, "x", BasicType.Int));
var body = Expr.Gt(new IdentifierExpr(Token.NoToken, x, /*immutable=*/true),
new IdentifierExpr(Token.NoToken, y, /*immutable=*/true));
var exists = new ExistsExpr(Token.NoToken, new List<Variable>() {x, y}, body, /*immutable=*/ true);
Assert.AreEqual(exists.ComputeHashCode(), exists.GetHashCode());
}
public void SimpleExists()
{
var boundVar = new BoundVariable(Token.NoToken, new TypedIdent(Token.NoToken, "foo", Microsoft.Boogie.Type.Bool));
var id = new IdentifierExpr(Token.NoToken, boundVar);
var exists = new ExistsExpr(Token.NoToken, new List <Variable>()
{
boundVar
}, id);
var id2 = new IdentifierExpr(Token.NoToken, boundVar);
var exists2 = new ExistsExpr(Token.NoToken, new List <Variable>()
{
boundVar
}, id2);
Assert.AreNotSame(exists, exists2); // These are different references
Assert.IsTrue(exists.Equals(exists2)); // These are "structurally equal"
Assert.AreEqual(exists.GetHashCode(), exists2.GetHashCode()); // If the .Equals() is true then hash codes must be the same
}