if_chain! {
    if let ExprKind::Struct(qpath, fields, None) = expr.kind;
    if match_qpath(qpath, &["Test"]);
    if fields.len() == 1;
    if fields[0].ident.as_str() == "field";
    if let ExprKind::If(cond, then, Some(else_expr)) = fields[0].expr.kind;
    if let ExprKind::DropTemps(expr1) = cond.kind;
    if let ExprKind::Lit(ref lit) = expr1.kind;
    if let LitKind::Bool(true) = lit.node;
    if let ExprKind::Block(block, None) = then.kind;
    if block.stmts.is_empty();
    if let Some(trailing_expr) = block.expr;
    if let ExprKind::Lit(ref lit1) = trailing_expr.kind;
    if let LitKind::Int(1, LitIntType::Unsuffixed) = lit1.node;
    if let ExprKind::Block(block1, None) = else_expr.kind;
    if block1.stmts.is_empty();
    if let Some(trailing_expr1) = block1.expr;
    if let ExprKind::Lit(ref lit2) = trailing_expr1.kind;
    if let LitKind::Int(0, LitIntType::Unsuffixed) = lit2.node;
    then {
        // report your lint here
    }
}
if_chain! {
    if let PatKind::Struct(ref qpath, fields, false) = arm.pat.kind;
    if match_qpath(qpath, &["Test"]);
    if fields.len() == 1;
    if fields[0].ident.as_str() == "field";
    if let PatKind::Lit(lit_expr) = fields[0].pat.kind;
    if let ExprKind::Lit(ref lit) = lit_expr.kind;
    if let LitKind::Int(1, LitIntType::Unsuffixed) = lit.node;
    if arm.guard.is_none();
    if let ExprKind::Block(block, None) = arm.body.kind;
    if block.stmts.is_empty();
    if block.expr.is_none();
    then {
        // report your lint here
    }
}
if_chain! {
    if let PatKind::TupleStruct(ref qpath, fields, None) = arm.pat.kind;
    if match_qpath(qpath, &["TestTuple"]);
    if fields.len() == 1;
    if let PatKind::Lit(lit_expr) = fields[0].kind;
    if let ExprKind::Lit(ref lit) = lit_expr.kind;
    if let LitKind::Int(1, LitIntType::Unsuffixed) = lit.node;
    if arm.guard.is_none();
    if let ExprKind::Block(block, None) = arm.body.kind;
    if block.stmts.is_empty();
    if block.expr.is_none();
    then {
        // report your lint here
    }
}
if_chain! {
    if let ExprKind::MethodCall(method_name, _, args, _) = expr.kind;
    if method_name.ident.as_str() == "test";
    if args.len() == 1;
    if let ExprKind::Path(ref qpath) = args[0].kind;
    if match_qpath(qpath, &["test_method_call"]);
    then {
        // report your lint here
    }
}