Auto merge of #7285 - camsteffen:mini-macro-move, r=flip1995

Move mini-macro to tests/ui/auxilary

changelog: none

Merges `/mini-macro` into `/tests/ui/auxilary/proc_macro_derive.rs`.

The mini-macro crate is an artifact of the distant past. A lot has changed (#2284) and it doesn't make sense as a top-level crate anymore. Especially since we can use the auxilary folder to accompolish the same thing.

11 files changed, 43 insertions, 75 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 458c28c2748..b003b15a11d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -33,7 +33,6 @@ tempfile = { version = "3.1.0", optional = true }
 cargo_metadata = "0.12"
 compiletest_rs = { version = "0.6.0", features = ["tmp"] }
 tester = "0.9"
-clippy-mini-macro-test = { version = "0.2", path = "mini-macro" }
 serde = { version = "1.0", features = ["derive"] }
 derive-new = "0.5"
 regex = "1.4"
diff --git a/mini-macro/Cargo.toml b/mini-macro/Cargo.toml
deleted file mode 100644
index 0d95c86aef0..00000000000
--- a/mini-macro/Cargo.toml
+++ /dev/null
@@ -1,14 +0,0 @@
-[package]
-name = "clippy-mini-macro-test"
-version = "0.2.0"
-authors = ["The Rust Clippy Developers"]
-license = "MIT OR Apache-2.0"
-description = "A macro to test clippy's procedural macro checks"
-repository = "https://github.com/rust-lang/rust-clippy"
-edition = "2018"
-
-[lib]
-name = "clippy_mini_macro_test"
-proc-macro = true
-
-[dependencies]
diff --git a/mini-macro/src/lib.rs b/mini-macro/src/lib.rs
deleted file mode 100644
index 2b793589049..00000000000
--- a/mini-macro/src/lib.rs
+++ /dev/null
@@ -1,29 +0,0 @@
-#![feature(proc_macro_quote)]
-#![deny(rust_2018_idioms)]
-// FIXME: Remove this attribute once the weird failure is gone.
-#![allow(unused_extern_crates)]
-extern crate proc_macro;
-
-use proc_macro::{quote, TokenStream};
-
-#[proc_macro_derive(ClippyMiniMacroTest)]
-/// # Panics
-///
-/// Panics if the macro derivation fails
-pub fn mini_macro(_: TokenStream) -> TokenStream {
-    quote!(
-        #[allow(unused)]
-        fn needless_take_by_value(s: String) {
-            println!("{}", s.len());
-        }
-        #[allow(unused)]
-        fn needless_loop(items: &[u8]) {
-            for i in 0..items.len() {
-                println!("{}", items[i]);
-            }
-        }
-        fn line_wrapper() {
-            println!("{}", line!());
-        }
-    )
-}
diff --git a/tests/ui/auxiliary/proc_macro_derive.rs b/tests/ui/auxiliary/proc_macro_derive.rs
index aebeaf34679..4b7b7fec78f 100644
--- a/tests/ui/auxiliary/proc_macro_derive.rs
+++ b/tests/ui/auxiliary/proc_macro_derive.rs
@@ -53,3 +53,22 @@ pub fn derive_use_self(_input: TokenStream) -> proc_macro::TokenStream {
         }
     }
 }
+
+#[proc_macro_derive(ClippyMiniMacroTest)]
+pub fn mini_macro(_: TokenStream) -> TokenStream {
+    quote!(
+        #[allow(unused)]
+        fn needless_take_by_value(s: String) {
+            println!("{}", s.len());
+        }
+        #[allow(unused)]
+        fn needless_loop(items: &[u8]) {
+            for i in 0..items.len() {
+                println!("{}", items[i]);
+            }
+        }
+        fn line_wrapper() {
+            println!("{}", line!());
+        }
+    )
+}
diff --git a/tests/ui/crashes/procedural_macro.rs b/tests/ui/crashes/procedural_macro.rs
deleted file mode 100644
index c7468493380..00000000000
--- a/tests/ui/crashes/procedural_macro.rs
+++ /dev/null
@@ -1,11 +0,0 @@
-#[macro_use]
-extern crate clippy_mini_macro_test;
-
-#[deny(warnings)]
-fn main() {
-    let x = Foo;
-    println!("{:?}", x);
-}
-
-#[derive(ClippyMiniMacroTest, Debug)]
-struct Foo;
diff --git a/tests/ui/macro_use_imports.fixed b/tests/ui/macro_use_imports.fixed
index 51c66a46368..70d49d9f2c4 100644
--- a/tests/ui/macro_use_imports.fixed
+++ b/tests/ui/macro_use_imports.fixed
@@ -1,6 +1,7 @@
 // compile-flags: --edition 2018
 // aux-build:macro_rules.rs
 // aux-build:macro_use_helper.rs
+// aux-build:proc_macro_derive.rs
 // run-rustfix
 // ignore-32bit
 
@@ -12,7 +13,7 @@
 extern crate macro_use_helper as mac;
 
 #[macro_use]
-extern crate clippy_mini_macro_test as mini_mac;
+extern crate proc_macro_derive as mini_mac;
 
 mod a {
     use mac::{pub_macro, inner_mod_macro, function_macro, ty_macro, pub_in_private_macro};
diff --git a/tests/ui/macro_use_imports.rs b/tests/ui/macro_use_imports.rs
index 2011129bc94..68370023861 100644
--- a/tests/ui/macro_use_imports.rs
+++ b/tests/ui/macro_use_imports.rs
@@ -1,6 +1,7 @@
 // compile-flags: --edition 2018
 // aux-build:macro_rules.rs
 // aux-build:macro_use_helper.rs
+// aux-build:proc_macro_derive.rs
 // run-rustfix
 // ignore-32bit
 
@@ -12,7 +13,7 @@
 extern crate macro_use_helper as mac;
 
 #[macro_use]
-extern crate clippy_mini_macro_test as mini_mac;
+extern crate proc_macro_derive as mini_mac;
 
 mod a {
     #[macro_use]
diff --git a/tests/ui/macro_use_imports.stderr b/tests/ui/macro_use_imports.stderr
index f8c86c8d917..49314b7506d 100644
--- a/tests/ui/macro_use_imports.stderr
+++ b/tests/ui/macro_use_imports.stderr
@@ -1,5 +1,5 @@
 error: `macro_use` attributes are no longer needed in the Rust 2018 edition
-  --> $DIR/macro_use_imports.rs:18:5
+  --> $DIR/macro_use_imports.rs:19:5
    |
 LL |     #[macro_use]
    |     ^^^^^^^^^^^^ help: remove the attribute and import the macro directly, try: `use mac::{pub_macro, inner_mod_macro, function_macro, ty_macro, pub_in_private_macro};`
@@ -7,22 +7,22 @@ LL |     #[macro_use]
    = note: `-D clippy::macro-use-imports` implied by `-D warnings`
 
 error: `macro_use` attributes are no longer needed in the Rust 2018 edition
-  --> $DIR/macro_use_imports.rs:20:5
+  --> $DIR/macro_use_imports.rs:25:5
    |
 LL |     #[macro_use]
-   |     ^^^^^^^^^^^^ help: remove the attribute and import the macro directly, try: `use mini_mac::ClippyMiniMacroTest;`
+   |     ^^^^^^^^^^^^ help: remove the attribute and import the macro directly, try: `use mac::inner::nested::string_add;`
 
 error: `macro_use` attributes are no longer needed in the Rust 2018 edition
-  --> $DIR/macro_use_imports.rs:22:5
+  --> $DIR/macro_use_imports.rs:21:5
    |
 LL |     #[macro_use]
-   |     ^^^^^^^^^^^^ help: remove the attribute and import the macro directly, try: `use mac::{inner::foofoo, inner::try_err};`
+   |     ^^^^^^^^^^^^ help: remove the attribute and import the macro directly, try: `use mini_mac::ClippyMiniMacroTest;`
 
 error: `macro_use` attributes are no longer needed in the Rust 2018 edition
-  --> $DIR/macro_use_imports.rs:24:5
+  --> $DIR/macro_use_imports.rs:23:5
    |
 LL |     #[macro_use]
-   |     ^^^^^^^^^^^^ help: remove the attribute and import the macro directly, try: `use mac::inner::nested::string_add;`
+   |     ^^^^^^^^^^^^ help: remove the attribute and import the macro directly, try: `use mac::{inner::foofoo, inner::try_err};`
 
 error: aborting due to 4 previous errors
 
diff --git a/tests/ui/unseparated_prefix_literals.fixed b/tests/ui/unseparated_prefix_literals.fixed
index 3c422cc4fee..f0c2ba7ccdf 100644
--- a/tests/ui/unseparated_prefix_literals.fixed
+++ b/tests/ui/unseparated_prefix_literals.fixed
@@ -1,10 +1,11 @@
 // run-rustfix
+// aux-build:proc_macro_derive.rs
 
 #![warn(clippy::unseparated_literal_suffix)]
 #![allow(dead_code)]
 
 #[macro_use]
-extern crate clippy_mini_macro_test;
+extern crate proc_macro_derive;
 
 // Test for proc-macro attribute
 #[derive(ClippyMiniMacroTest)]
diff --git a/tests/ui/unseparated_prefix_literals.rs b/tests/ui/unseparated_prefix_literals.rs
index 09608661e0e..f44880b4147 100644
--- a/tests/ui/unseparated_prefix_literals.rs
+++ b/tests/ui/unseparated_prefix_literals.rs
@@ -1,10 +1,11 @@
 // run-rustfix
+// aux-build:proc_macro_derive.rs
 
 #![warn(clippy::unseparated_literal_suffix)]
 #![allow(dead_code)]
 
 #[macro_use]
-extern crate clippy_mini_macro_test;
+extern crate proc_macro_derive;
 
 // Test for proc-macro attribute
 #[derive(ClippyMiniMacroTest)]
diff --git a/tests/ui/unseparated_prefix_literals.stderr b/tests/ui/unseparated_prefix_literals.stderr
index a0c0be7a9d1..ab2f75e0c56 100644
--- a/tests/ui/unseparated_prefix_literals.stderr
+++ b/tests/ui/unseparated_prefix_literals.stderr
@@ -1,5 +1,5 @@
 error: integer type suffix should be separated by an underscore
-  --> $DIR/unseparated_prefix_literals.rs:23:18
+  --> $DIR/unseparated_prefix_literals.rs:24:18
    |
 LL |     let _fail1 = 1234i32;
    |                  ^^^^^^^ help: add an underscore: `1234_i32`
@@ -7,43 +7,43 @@ LL |     let _fail1 = 1234i32;
    = note: `-D clippy::unseparated-literal-suffix` implied by `-D warnings`
 
 error: integer type suffix should be separated by an underscore
-  --> $DIR/unseparated_prefix_literals.rs:24:18
+  --> $DIR/unseparated_prefix_literals.rs:25:18
    |
 LL |     let _fail2 = 1234u32;
    |                  ^^^^^^^ help: add an underscore: `1234_u32`
 
 error: integer type suffix should be separated by an underscore
-  --> $DIR/unseparated_prefix_literals.rs:25:18
+  --> $DIR/unseparated_prefix_literals.rs:26:18
    |
 LL |     let _fail3 = 1234isize;
    |                  ^^^^^^^^^ help: add an underscore: `1234_isize`
 
 error: integer type suffix should be separated by an underscore
-  --> $DIR/unseparated_prefix_literals.rs:26:18
+  --> $DIR/unseparated_prefix_literals.rs:27:18
    |
 LL |     let _fail4 = 1234usize;
    |                  ^^^^^^^^^ help: add an underscore: `1234_usize`
 
 error: integer type suffix should be separated by an underscore
-  --> $DIR/unseparated_prefix_literals.rs:27:18
+  --> $DIR/unseparated_prefix_literals.rs:28:18
    |
 LL |     let _fail5 = 0x123isize;
    |                  ^^^^^^^^^^ help: add an underscore: `0x123_isize`
 
 error: float type suffix should be separated by an underscore
-  --> $DIR/unseparated_prefix_literals.rs:31:19
+  --> $DIR/unseparated_prefix_literals.rs:32:19
    |
 LL |     let _failf1 = 1.5f32;
    |                   ^^^^^^ help: add an underscore: `1.5_f32`
 
 error: float type suffix should be separated by an underscore
-  --> $DIR/unseparated_prefix_literals.rs:32:19
+  --> $DIR/unseparated_prefix_literals.rs:33:19
    |
 LL |     let _failf2 = 1f32;
    |                   ^^^^ help: add an underscore: `1_f32`
 
 error: integer type suffix should be separated by an underscore
-  --> $DIR/unseparated_prefix_literals.rs:15:9
+  --> $DIR/unseparated_prefix_literals.rs:16:9
    |
 LL |         42usize
    |         ^^^^^^^ help: add an underscore: `42_usize`
@@ -54,7 +54,7 @@ LL |     let _ = lit_from_macro!();
    = note: this error originates in the macro `lit_from_macro` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: integer type suffix should be separated by an underscore
-  --> $DIR/unseparated_prefix_literals.rs:40:16
+  --> $DIR/unseparated_prefix_literals.rs:41:16
    |
 LL |     assert_eq!(4897u32, 32223);
    |                ^^^^^^^ help: add an underscore: `4897_u32`