Auto merge of #7866 - rust-lang:edition-2021-tests, r=Manishearth

update most tests to 2021 edition

Some tests would no longer work at all, so I added `edition:2015` or `edition:2018` to them.

Notably 2021 panics are not yet detected correctly. Once ready, this closes #7842.

---

changelog: none

Author: bors

Cargo.toml

@@ -28,7 +28,7 @@ tempfile = { version = "3.2", optional = true }
 
 [dev-dependencies]
 cargo_metadata = "0.12"
-compiletest_rs = { version = "0.7", features = ["tmp"] }
+compiletest_rs = { version = "0.7.1", features = ["tmp"] }
 tester = "0.9"
 regex = "1.5"
 # This is used by the `collect-metadata` alias.

tests/compile-test.rs

@@ -104,7 +104,10 @@ fn extern_flags() -> String {
 }
 
 fn default_config() -> compiletest::Config {
-    let mut config = compiletest::Config::default();
+    let mut config = compiletest::Config {
+        edition: Some("2021".into()),
+        ..compiletest::Config::default()
+    };
 
     if let Ok(filters) = env::var("TESTNAME") {
         config.filters = filters.split(',').map(std::string::ToString::to_string).collect();

tests/ui-toml/functions_maxlines/test.rs

@@ -1,5 +1,3 @@
-// edition:2018
-
 #![warn(clippy::too_many_lines)]
 
 // This function should be considered one line.

tests/ui-toml/functions_maxlines/test.stderr

@@ -1,5 +1,5 @@
 error: this function has too many lines (2/1)
-  --> $DIR/test.rs:20:1
+  --> $DIR/test.rs:18:1
    |
 LL | / fn too_many_lines() {
 LL | |     println!("This is bad.");
@@ -10,7 +10,7 @@ LL | | }
    = note: `-D clippy::too-many-lines` implied by `-D warnings`
 
 error: this function has too many lines (4/1)
-  --> $DIR/test.rs:26:1
+  --> $DIR/test.rs:24:1
    |
 LL | / async fn async_too_many_lines() {
 LL | |     println!("This is bad.");
@@ -19,7 +19,7 @@ LL | | }
    | |_^
 
 error: this function has too many lines (4/1)
-  --> $DIR/test.rs:32:1
+  --> $DIR/test.rs:30:1
    |
 LL | / fn closure_too_many_lines() {
 LL | |     let _ = {
@@ -30,7 +30,7 @@ LL | | }
    | |_^
 
 error: this function has too many lines (2/1)
-  --> $DIR/test.rs:54:1
+  --> $DIR/test.rs:52:1
    |
 LL | / fn comment_before_code() {
 LL | |     let _ = "test";

tests/ui/assertions_on_constants.rs

@@ -1,3 +1,4 @@
+//FIXME: suggestions are wrongly expanded, this should be fixed along with #7843
 #![allow(non_fmt_panics)]
 
 macro_rules! assert_const {
@@ -6,15 +7,14 @@ macro_rules! assert_const {
         debug_assert!($len < 0);
     };
 }
-
 fn main() {
     assert!(true);
     assert!(false);
     assert!(true, "true message");
     assert!(false, "false message");
 
     let msg = "panic message";
-    assert!(false, msg.to_uppercase());
+    assert!(false, "{}", msg.to_uppercase());
 
     const B: bool = true;
     assert!(B);

tests/ui/assertions_on_constants.stderr

@@ -26,22 +26,13 @@ LL |     assert!(true, "true message");
    = help: remove it
    = note: this error originates in the macro `assert` (in Nightly builds, run with -Z macro-backtrace for more info)
 
-error: `assert!(false, "false message")` should probably be replaced
+error: `assert!(false, $crate::const_format_args!($($t)+))` should probably be replaced
   --> $DIR/assertions_on_constants.rs:14:5
    |
 LL |     assert!(false, "false message");
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = help: use `panic!("false message")` or `unreachable!("false message")`
-   = note: this error originates in the macro `assert` (in Nightly builds, run with -Z macro-backtrace for more info)
-
-error: `assert!(false, msg.to_uppercase())` should probably be replaced
-  --> $DIR/assertions_on_constants.rs:17:5
-   |
-LL |     assert!(false, msg.to_uppercase());
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = help: use `panic!(msg.to_uppercase())` or `unreachable!(msg.to_uppercase())`
+   = help: use `panic!($crate::const_format_args!($($t)+))` or `unreachable!($crate::const_format_args!($($t)+))`
    = note: this error originates in the macro `assert` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: `assert!(true)` will be optimized out by the compiler
@@ -62,13 +53,13 @@ LL |     assert!(C);
    = help: use `panic!()` or `unreachable!()`
    = note: this error originates in the macro `assert` (in Nightly builds, run with -Z macro-backtrace for more info)
 
-error: `assert!(false, "C message")` should probably be replaced
+error: `assert!(false, $crate::const_format_args!($($t)+))` should probably be replaced
   --> $DIR/assertions_on_constants.rs:24:5
    |
 LL |     assert!(C, "C message");
    |     ^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = help: use `panic!("C message")` or `unreachable!("C message")`
+   = help: use `panic!($crate::const_format_args!($($t)+))` or `unreachable!($crate::const_format_args!($($t)+))`
    = note: this error originates in the macro `assert` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: `debug_assert!(true)` will be optimized out by the compiler
@@ -80,5 +71,5 @@ LL |     debug_assert!(true);
    = help: remove it
    = note: this error originates in the macro `$crate::assert` (in Nightly builds, run with -Z macro-backtrace for more info)
 
-error: aborting due to 9 previous errors
+error: aborting due to 8 previous errors
 

tests/ui/async_yields_async.fixed

@@ -1,5 +1,4 @@
 // run-rustfix
-// edition:2018
 
 #![feature(async_closure)]
 #![warn(clippy::async_yields_async)]

tests/ui/async_yields_async.rs

@@ -1,5 +1,4 @@
 // run-rustfix
-// edition:2018
 
 #![feature(async_closure)]
 #![warn(clippy::async_yields_async)]

tests/ui/async_yields_async.stderr

@@ -1,5 +1,5 @@
 error: an async construct yields a type which is itself awaitable
-  --> $DIR/async_yields_async.rs:40:9
+  --> $DIR/async_yields_async.rs:39:9
    |
 LL |        let _h = async {
    |   ____________________-
@@ -20,7 +20,7 @@ LL +         }.await
    |
 
 error: an async construct yields a type which is itself awaitable
-  --> $DIR/async_yields_async.rs:45:9
+  --> $DIR/async_yields_async.rs:44:9
    |
 LL |       let _i = async {
    |  ____________________-
@@ -33,7 +33,7 @@ LL | |     };
    | |_____- outer async construct
 
 error: an async construct yields a type which is itself awaitable
-  --> $DIR/async_yields_async.rs:51:9
+  --> $DIR/async_yields_async.rs:50:9
    |
 LL |        let _j = async || {
    |   _______________________-
@@ -53,7 +53,7 @@ LL +         }.await
    |
 
 error: an async construct yields a type which is itself awaitable
-  --> $DIR/async_yields_async.rs:56:9
+  --> $DIR/async_yields_async.rs:55:9
    |
 LL |       let _k = async || {
    |  _______________________-
@@ -66,7 +66,7 @@ LL | |     };
    | |_____- outer async construct
 
 error: an async construct yields a type which is itself awaitable
-  --> $DIR/async_yields_async.rs:58:23
+  --> $DIR/async_yields_async.rs:57:23
    |
 LL |     let _l = async || CustomFutureType;
    |                       ^^^^^^^^^^^^^^^^
@@ -76,7 +76,7 @@ LL |     let _l = async || CustomFutureType;
    |                       help: consider awaiting this value: `CustomFutureType.await`
 
 error: an async construct yields a type which is itself awaitable
-  --> $DIR/async_yields_async.rs:64:9
+  --> $DIR/async_yields_async.rs:63:9
    |
 LL |       let _m = async || {
    |  _______________________-

tests/ui/await_holding_lock.rs

@@ -1,4 +1,3 @@
-// edition:2018
 #![warn(clippy::await_holding_lock)]
 
 use std::sync::Mutex;