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UI test cleanup: Extract expect_fun_call tests
Note that the new stderr file does not include a `shadow-unrelated` error, because the new UI test file does not use `#![warn(clippy::all)]`
This commit is contained in:
Philipp Hansch
parent
5172271e70
commit
26569f3dde
69
tests/ui/expect_fun_call.rs
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69
tests/ui/expect_fun_call.rs
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@ -0,0 +1,69 @@
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// 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 { Foo }
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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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40
tests/ui/expect_fun_call.stderr
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40
tests/ui/expect_fun_call.stderr
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@ -0,0 +1,40 @@
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error: use of `expect` followed by a function call
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--> $DIR/expect_fun_call.rs:34:26
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34 | with_none_and_format.expect(&format!("Error {}: fake error", error_code));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| panic!("Error {}: fake error", error_code))`
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= note: `-D clippy::expect-fun-call` implied by `-D warnings`
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error: use of `expect` followed by a function call
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--> $DIR/expect_fun_call.rs:37:26
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37 | with_none_and_as_str.expect(format!("Error {}: fake error", error_code).as_str());
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| panic!("Error {}: fake error", error_code))`
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error: use of `expect` followed by a function call
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--> $DIR/expect_fun_call.rs:47:25
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47 | with_err_and_format.expect(&format!("Error {}: fake error", error_code));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| panic!("Error {}: fake error", error_code))`
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error: use of `expect` followed by a function call
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--> $DIR/expect_fun_call.rs:50:25
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50 | with_err_and_as_str.expect(format!("Error {}: fake error", error_code).as_str());
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| panic!("Error {}: fake error", error_code))`
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error: use of `expect` followed by a function call
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--> $DIR/expect_fun_call.rs:65:17
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65 | Some("foo").expect({ &format!("error") });
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| { let msg = { &format!("error") }; panic!(msg) }))`
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error: use of `expect` followed by a function call
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--> $DIR/expect_fun_call.rs:66:17
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66 | Some("foo").expect(format!("error").as_ref());
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| panic!("error"))`
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error: aborting due to 6 previous errors
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@ -353,61 +353,6 @@ fn or_fun_call() {
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let _ = stringy.unwrap_or("".to_owned());
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}
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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 { Foo }
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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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/// Checks implementation of `ITER_NTH` lint
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fn iter_nth() {
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let mut some_vec = vec![0, 1, 2, 3];
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@ -323,139 +323,83 @@ error: use of `unwrap_or` followed by a function call
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353 | let _ = stringy.unwrap_or("".to_owned());
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| ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| "".to_owned())`
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error: `error_code` is shadowed by `123_i32`
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--> $DIR/methods.rs:387:9
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387 | let error_code = 123_i32;
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| ^^^^^^^^^^
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= note: `-D clippy::shadow-unrelated` implied by `-D warnings`
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note: initialization happens here
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--> $DIR/methods.rs:387:22
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387 | let error_code = 123_i32;
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| ^^^^^^^
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note: previous binding is here
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--> $DIR/methods.rs:374:9
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374 | let error_code = 123_i32;
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| ^^^^^^^^^^
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error: use of `expect` followed by a function call
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--> $DIR/methods.rs:376:26
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376 | with_none_and_format.expect(&format!("Error {}: fake error", error_code));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| panic!("Error {}: fake error", error_code))`
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= note: `-D clippy::expect-fun-call` implied by `-D warnings`
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error: use of `expect` followed by a function call
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--> $DIR/methods.rs:379:26
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379 | with_none_and_as_str.expect(format!("Error {}: fake error", error_code).as_str());
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| panic!("Error {}: fake error", error_code))`
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error: use of `expect` followed by a function call
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--> $DIR/methods.rs:389:25
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389 | with_err_and_format.expect(&format!("Error {}: fake error", error_code));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| panic!("Error {}: fake error", error_code))`
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error: use of `expect` followed by a function call
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--> $DIR/methods.rs:392:25
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392 | with_err_and_as_str.expect(format!("Error {}: fake error", error_code).as_str());
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| panic!("Error {}: fake error", error_code))`
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error: use of `expect` followed by a function call
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--> $DIR/methods.rs:407:17
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407 | Some("foo").expect({ &format!("error") });
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| { let msg = { &format!("error") }; panic!(msg) }))`
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error: use of `expect` followed by a function call
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--> $DIR/methods.rs:408:17
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408 | Some("foo").expect(format!("error").as_ref());
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| panic!("error"))`
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error: called `.iter().nth()` on a Vec. Calling `.get()` is both faster and more readable
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--> $DIR/methods.rs:419:23
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--> $DIR/methods.rs:364:23
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419 | let bad_vec = some_vec.iter().nth(3);
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364 | let bad_vec = some_vec.iter().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^
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= note: `-D clippy::iter-nth` implied by `-D warnings`
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error: called `.iter().nth()` on a slice. Calling `.get()` is both faster and more readable
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--> $DIR/methods.rs:420:26
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--> $DIR/methods.rs:365:26
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420 | let bad_slice = &some_vec[..].iter().nth(3);
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365 | let bad_slice = &some_vec[..].iter().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `.iter().nth()` on a slice. Calling `.get()` is both faster and more readable
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--> $DIR/methods.rs:421:31
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--> $DIR/methods.rs:366:31
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421 | let bad_boxed_slice = boxed_slice.iter().nth(3);
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366 | let bad_boxed_slice = boxed_slice.iter().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `.iter().nth()` on a VecDeque. Calling `.get()` is both faster and more readable
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--> $DIR/methods.rs:422:29
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--> $DIR/methods.rs:367:29
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422 | let bad_vec_deque = some_vec_deque.iter().nth(3);
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367 | let bad_vec_deque = some_vec_deque.iter().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `.iter_mut().nth()` on a Vec. Calling `.get_mut()` is both faster and more readable
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--> $DIR/methods.rs:427:23
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--> $DIR/methods.rs:372:23
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427 | let bad_vec = some_vec.iter_mut().nth(3);
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372 | let bad_vec = some_vec.iter_mut().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `.iter_mut().nth()` on a slice. Calling `.get_mut()` is both faster and more readable
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--> $DIR/methods.rs:430:26
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--> $DIR/methods.rs:375:26
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430 | let bad_slice = &some_vec[..].iter_mut().nth(3);
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375 | let bad_slice = &some_vec[..].iter_mut().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `.iter_mut().nth()` on a VecDeque. Calling `.get_mut()` is both faster and more readable
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--> $DIR/methods.rs:433:29
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--> $DIR/methods.rs:378:29
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433 | let bad_vec_deque = some_vec_deque.iter_mut().nth(3);
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378 | let bad_vec_deque = some_vec_deque.iter_mut().nth(3);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
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--> $DIR/methods.rs:445:13
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--> $DIR/methods.rs:390:13
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445 | let _ = some_vec.iter().skip(42).next();
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390 | let _ = some_vec.iter().skip(42).next();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: `-D clippy::iter-skip-next` implied by `-D warnings`
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error: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
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--> $DIR/methods.rs:446:13
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--> $DIR/methods.rs:391:13
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446 | let _ = some_vec.iter().cycle().skip(42).next();
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391 | let _ = some_vec.iter().cycle().skip(42).next();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
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--> $DIR/methods.rs:447:13
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--> $DIR/methods.rs:392:13
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447 | let _ = (1..10).skip(10).next();
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392 | let _ = (1..10).skip(10).next();
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| ^^^^^^^^^^^^^^^^^^^^^^^
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error: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
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--> $DIR/methods.rs:448:14
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--> $DIR/methods.rs:393:14
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448 | let _ = &some_vec[..].iter().skip(3).next();
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393 | let _ = &some_vec[..].iter().skip(3).next();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: used unwrap() on an Option value. If you don't want to handle the None case gracefully, consider using expect() to provide a better panic message
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--> $DIR/methods.rs:457:13
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--> $DIR/methods.rs:402:13
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457 | let _ = opt.unwrap();
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402 | let _ = opt.unwrap();
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| ^^^^^^^^^^^^
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= note: `-D clippy::option-unwrap-used` implied by `-D warnings`
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error: aborting due to 57 previous errors
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error: aborting due to 50 previous errors
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