rust/tests/ui/author/if.stdout

if_chain! {
    if let StmtKind::Local(ref local) = stmt.kind;
    if let Some(ref init) = local.init;
    if let ExprKind::If(ref cond, ref then, Some(ref else_)) = init.kind;
    if let ExprKind::Block(ref block) = else_.kind;
    if let Some(trailing_expr) = &block.expr;
    if block.stmts.len() == 1;
    if let StmtKind::Semi(ref e, _) = block.stmts[0].kind
    if let ExprKind::Binary(ref op, ref left, ref right) = e.kind;
    if BinOpKind::Eq == op.node;
    if let ExprKind::Lit(ref lit) = left.kind;
    if let LitKind::Int(2, _) = lit.node;
    if let ExprKind::Lit(ref lit1) = right.kind;
    if let LitKind::Int(2, _) = lit1.node;
    if let ExprKind::Lit(ref lit2) = cond.kind;
    if let LitKind::Bool(true) = lit2.node;
    if let ExprKind::Block(ref block1) = then.kind;
    if let Some(trailing_expr1) = &block1.expr;
    if block1.stmts.len() == 1;
    if let StmtKind::Semi(ref e1, _) = block1.stmts[0].kind
    if let ExprKind::Binary(ref op1, ref left1, ref right1) = e1.kind;
    if BinOpKind::Eq == op1.node;
    if let ExprKind::Lit(ref lit3) = left1.kind;
    if let LitKind::Int(1, _) = lit3.node;
    if let ExprKind::Lit(ref lit4) = right1.kind;
    if let LitKind::Int(1, _) = lit4.node;
    if let PatKind::Wild = local.pat.kind;
    then {
        // report your lint here
    }
}