mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-09-22 07:32:00 +00:00
71 lines
2.2 KiB
Rust
71 lines
2.2 KiB
Rust
// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![warn(clippy::expect_fun_call)]
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#![allow(clippy::useless_format)]
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/// Checks implementation of the `EXPECT_FUN_CALL` lint
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fn expect_fun_call() {
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struct Foo;
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impl Foo {
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fn new() -> Self {
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Foo
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}
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fn expect(&self, msg: &str) {
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panic!("{}", msg)
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}
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}
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let with_some = Some("value");
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with_some.expect("error");
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let with_none: Option<i32> = None;
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with_none.expect("error");
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let error_code = 123_i32;
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let with_none_and_format: Option<i32> = None;
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with_none_and_format.expect(&format!("Error {}: fake error", error_code));
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let with_none_and_as_str: Option<i32> = None;
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with_none_and_as_str.expect(format!("Error {}: fake error", error_code).as_str());
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let with_ok: Result<(), ()> = Ok(());
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with_ok.expect("error");
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let with_err: Result<(), ()> = Err(());
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with_err.expect("error");
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let error_code = 123_i32;
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let with_err_and_format: Result<(), ()> = Err(());
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with_err_and_format.expect(&format!("Error {}: fake error", error_code));
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let with_err_and_as_str: Result<(), ()> = Err(());
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with_err_and_as_str.expect(format!("Error {}: fake error", error_code).as_str());
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let with_dummy_type = Foo::new();
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with_dummy_type.expect("another test string");
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let with_dummy_type_and_format = Foo::new();
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with_dummy_type_and_format.expect(&format!("Error {}: fake error", error_code));
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let with_dummy_type_and_as_str = Foo::new();
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with_dummy_type_and_as_str.expect(format!("Error {}: fake error", error_code).as_str());
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//Issue #2979 - this should not lint
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let msg = "bar";
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Some("foo").expect(msg);
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Some("foo").expect({ &format!("error") });
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Some("foo").expect(format!("error").as_ref());
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}
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fn main() {}
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