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mem_discriminant: split test, make rustfixable

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This commit is contained in:
Manish Goregaokar 2019-09-25 04:59:10 -07:00
parent 483e140bce
commit 0d8e4d7c37
5 changed files with 100 additions and 33 deletions
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45
tests/ui/mem_discriminant.fixed Normal file
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@ -0,0 +1,45 @@
// run-rustfix
#![deny(clippy::mem_discriminant_non_enum)]
use std::mem;
enum Foo {
One(usize),
Two(u8),
}
fn main() {
// bad
mem::discriminant(&Some(2));
mem::discriminant(&None::<u8>);
mem::discriminant(&Foo::One(5));
mem::discriminant(&Foo::Two(5));
let ro = &Some(3);
let rro = &ro;
mem::discriminant(ro);
mem::discriminant(*rro);
mem::discriminant(*rro);
macro_rules! mem_discriminant_but_in_a_macro {
($param:expr) => {
mem::discriminant($param)
};
}
mem_discriminant_but_in_a_macro!(*rro);
let rrrrro = &&&rro;
mem::discriminant(****rrrrro);
mem::discriminant(****rrrrro);
// ok
mem::discriminant(&Some(2));
mem::discriminant(&None::<u8>);
mem::discriminant(&Foo::One(5));
mem::discriminant(&Foo::Two(5));
mem::discriminant(ro);
mem::discriminant(*rro);
mem::discriminant(****rrrrro);
}

6
tests/ui/mem_discriminant.rs
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@ -1,3 +1,5 @@
// run-rustfix
#![deny(clippy::mem_discriminant_non_enum)]
use std::mem;
@ -7,16 +9,12 @@ enum Foo {
Two(u8),
}
struct A(Foo);
fn main() {
// bad
mem::discriminant(&"hello");
mem::discriminant(&&Some(2));
mem::discriminant(&&None::<u8>);
mem::discriminant(&&Foo::One(5));
mem::discriminant(&&Foo::Two(5));
mem::discriminant(&A(Foo::One(0)));
let ro = &Some(3);
let rro = &ro;

46
tests/ui/mem_discriminant.stderr
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@ -1,25 +1,19 @@
error: calling `mem::discriminant` on non-enum type `&str`
--> $DIR/mem_discriminant.rs:14:5
|
LL | mem::discriminant(&"hello");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
note: lint level defined here
--> $DIR/mem_discriminant.rs:1:9
|
LL | #![deny(clippy::mem_discriminant_non_enum)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: calling `mem::discriminant` on non-enum type `&std::option::Option<i32>`
--> $DIR/mem_discriminant.rs:15:5
--> $DIR/mem_discriminant.rs:14:5
|
LL | mem::discriminant(&&Some(2));
| ^^^^^^^^^^^^^^^^^^---------^
| |
| help: try dereferencing: `&Some(2)`
|
note: lint level defined here
--> $DIR/mem_discriminant.rs:3:9
|
LL | #![deny(clippy::mem_discriminant_non_enum)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: calling `mem::discriminant` on non-enum type `&std::option::Option<u8>`
--> $DIR/mem_discriminant.rs:16:5
--> $DIR/mem_discriminant.rs:15:5
|
LL | mem::discriminant(&&None::<u8>);
| ^^^^^^^^^^^^^^^^^^------------^
@ -27,7 +21,7 @@ LL | mem::discriminant(&&None::<u8>);
| help: try dereferencing: `&None::<u8>`
error: calling `mem::discriminant` on non-enum type `&Foo`
--> $DIR/mem_discriminant.rs:17:5
--> $DIR/mem_discriminant.rs:16:5
|
LL | mem::discriminant(&&Foo::One(5));
| ^^^^^^^^^^^^^^^^^^-------------^
@ -35,21 +29,15 @@ LL | mem::discriminant(&&Foo::One(5));
| help: try dereferencing: `&Foo::One(5)`
error: calling `mem::discriminant` on non-enum type `&Foo`
--> $DIR/mem_discriminant.rs:18:5
--> $DIR/mem_discriminant.rs:17:5
|
LL | mem::discriminant(&&Foo::Two(5));
| ^^^^^^^^^^^^^^^^^^-------------^
| |
| help: try dereferencing: `&Foo::Two(5)`
error: calling `mem::discriminant` on non-enum type `A`
--> $DIR/mem_discriminant.rs:19:5
|
LL | mem::discriminant(&A(Foo::One(0)));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: calling `mem::discriminant` on non-enum type `&std::option::Option<i32>`
--> $DIR/mem_discriminant.rs:23:5
--> $DIR/mem_discriminant.rs:21:5
|
LL | mem::discriminant(&ro);
| ^^^^^^^^^^^^^^^^^^---^
@ -57,7 +45,7 @@ LL | mem::discriminant(&ro);
| help: try dereferencing: `ro`
error: calling `mem::discriminant` on non-enum type `&std::option::Option<i32>`
--> $DIR/mem_discriminant.rs:24:5
--> $DIR/mem_discriminant.rs:22:5
|
LL | mem::discriminant(rro);
| ^^^^^^^^^^^^^^^^^^---^
@ -65,7 +53,7 @@ LL | mem::discriminant(rro);
| help: try dereferencing: `*rro`
error: calling `mem::discriminant` on non-enum type `&&std::option::Option<i32>`
--> $DIR/mem_discriminant.rs:25:5
--> $DIR/mem_discriminant.rs:23:5
|
LL | mem::discriminant(&rro);
| ^^^^^^^^^^^^^^^^^^----^
@ -73,7 +61,7 @@ LL | mem::discriminant(&rro);
| help: try dereferencing: `*rro`
error: calling `mem::discriminant` on non-enum type `&&std::option::Option<i32>`
--> $DIR/mem_discriminant.rs:29:13
--> $DIR/mem_discriminant.rs:27:13
|
LL | mem::discriminant($param)
| ^^^^^^^^^^^^^^^^^^^^^^^^^
@ -85,7 +73,7 @@ LL | mem_discriminant_but_in_a_macro!(&rro);
| in this macro invocation
error: calling `mem::discriminant` on non-enum type `&&&&&std::option::Option<i32>`
--> $DIR/mem_discriminant.rs:36:5
--> $DIR/mem_discriminant.rs:34:5
|
LL | mem::discriminant(&rrrrro);
| ^^^^^^^^^^^^^^^^^^-------^
@ -93,12 +81,12 @@ LL | mem::discriminant(&rrrrro);
| help: try dereferencing: `****rrrrro`
error: calling `mem::discriminant` on non-enum type `&&&std::option::Option<i32>`
--> $DIR/mem_discriminant.rs:37:5
--> $DIR/mem_discriminant.rs:35:5
|
LL | mem::discriminant(*rrrrro);
| ^^^^^^^^^^^^^^^^^^-------^
| |
| help: try dereferencing: `****rrrrro`
error: aborting due to 12 previous errors
error: aborting due to 10 previous errors

16
tests/ui/mem_discriminant_unfixable.rs Normal file
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@ -0,0 +1,16 @@
#![deny(clippy::mem_discriminant_non_enum)]
use std::mem;
enum Foo {
One(usize),
Two(u8),
}
struct A(Foo);
fn main() {
// bad
mem::discriminant(&"hello");
mem::discriminant(&A(Foo::One(0)));
}

20
tests/ui/mem_discriminant_unfixable.stderr Normal file
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@ -0,0 +1,20 @@
error: calling `mem::discriminant` on non-enum type `&str`
--> $DIR/mem_discriminant_unfixable.rs:14:5
|
LL | mem::discriminant(&"hello");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
note: lint level defined here
--> $DIR/mem_discriminant_unfixable.rs:1:9
|
LL | #![deny(clippy::mem_discriminant_non_enum)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: calling `mem::discriminant` on non-enum type `A`
--> $DIR/mem_discriminant_unfixable.rs:15:5
|
LL | mem::discriminant(&A(Foo::One(0)));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: aborting due to 2 previous errors