From f0a16b856011c8e63fac98fd6c127c2a0bbd532e Mon Sep 17 00:00:00 2001
From: Maybe Waffle <waffle.lapkin@gmail.com>
Date: Tue, 1 Mar 2022 14:11:42 +0300
Subject: [PATCH] Use rustfix in copy suggestion test

---
 .../use_of_moved_value_clone_suggestions.rs   |  6 ++
 ...se_of_moved_value_clone_suggestions.stderr | 13 ++++
 .../use_of_moved_value_copy_suggestions.fixed | 72 +++++++++++++++++++
 .../use_of_moved_value_copy_suggestions.rs    | 17 +++--
 ...use_of_moved_value_copy_suggestions.stderr | 36 +++++-----
 5 files changed, 119 insertions(+), 25 deletions(-)
 create mode 100644 src/test/ui/moves/use_of_moved_value_clone_suggestions.rs
 create mode 100644 src/test/ui/moves/use_of_moved_value_clone_suggestions.stderr
 create mode 100644 src/test/ui/moves/use_of_moved_value_copy_suggestions.fixed

diff --git a/src/test/ui/moves/use_of_moved_value_clone_suggestions.rs b/src/test/ui/moves/use_of_moved_value_clone_suggestions.rs
new file mode 100644
index 0000000000000..d5c8d4e6bdf2b
--- /dev/null
+++ b/src/test/ui/moves/use_of_moved_value_clone_suggestions.rs
@@ -0,0 +1,6 @@
+// `Rc` is not ever `Copy`, we should not suggest adding `T: Copy` constraint
+fn duplicate_rc<T>(t: std::rc::Rc<T>) -> (std::rc::Rc<T>, std::rc::Rc<T>) {
+    (t, t) //~ use of moved value: `t`
+}
+
+fn main() {}
diff --git a/src/test/ui/moves/use_of_moved_value_clone_suggestions.stderr b/src/test/ui/moves/use_of_moved_value_clone_suggestions.stderr
new file mode 100644
index 0000000000000..c25981e6f8063
--- /dev/null
+++ b/src/test/ui/moves/use_of_moved_value_clone_suggestions.stderr
@@ -0,0 +1,13 @@
+error[E0382]: use of moved value: `t`
+  --> $DIR/use_of_moved_value_clone_suggestions.rs:3:9
+   |
+LL | fn duplicate_rc<T>(t: std::rc::Rc<T>) -> (std::rc::Rc<T>, std::rc::Rc<T>) {
+   |                    - move occurs because `t` has type `Rc<T>`, which does not implement the `Copy` trait
+LL |     (t, t)
+   |      -  ^ value used here after move
+   |      |
+   |      value moved here
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0382`.
diff --git a/src/test/ui/moves/use_of_moved_value_copy_suggestions.fixed b/src/test/ui/moves/use_of_moved_value_copy_suggestions.fixed
new file mode 100644
index 0000000000000..d31046c77006e
--- /dev/null
+++ b/src/test/ui/moves/use_of_moved_value_copy_suggestions.fixed
@@ -0,0 +1,72 @@
+// run-rustfix
+#![allow(dead_code)]
+
+fn duplicate_t<T: Copy>(t: T) -> (T, T) {
+    //~^ HELP consider restricting type parameter `T`
+    (t, t) //~ use of moved value: `t`
+}
+
+fn duplicate_opt<T: Copy>(t: Option<T>) -> (Option<T>, Option<T>) {
+    //~^ HELP consider restricting type parameter `T`
+    (t, t) //~ use of moved value: `t`
+}
+
+fn duplicate_tup1<T: Copy>(t: (T,)) -> ((T,), (T,)) {
+    //~^ HELP consider restricting type parameter `T`
+    (t, t) //~ use of moved value: `t`
+}
+
+fn duplicate_tup2<A: Copy, B: Copy>(t: (A, B)) -> ((A, B), (A, B)) {
+    //~^ HELP consider restricting type parameters
+    (t, t) //~ use of moved value: `t`
+}
+
+fn duplicate_custom<T: Trait + Copy>(t: S<T>) -> (S<T>, S<T>) {
+    //~^ HELP consider restricting type parameter `T`
+    (t, t) //~ use of moved value: `t`
+}
+
+struct S<T>(T);
+trait Trait {}
+impl<T: Trait + Clone> Clone for S<T> {
+    fn clone(&self) -> Self {
+        Self(self.0.clone())
+    }
+}
+impl<T: Trait + Copy> Copy for S<T> {}
+
+trait A {}
+trait B {}
+
+// Test where bounds are added with different bound placements
+fn duplicate_custom_1<T: Trait + Copy>(t: S<T>) -> (S<T>, S<T>) where {
+    //~^ HELP consider restricting type parameter `T`
+    (t, t) //~ use of moved value: `t`
+}
+
+fn duplicate_custom_2<T>(t: S<T>) -> (S<T>, S<T>)
+where
+    T: A + Trait + Copy,
+    //~^ HELP consider further restricting this bound
+{
+    (t, t) //~ use of moved value: `t`
+}
+
+fn duplicate_custom_3<T>(t: S<T>) -> (S<T>, S<T>)
+where
+    T: A,
+    T: B, T: Trait, T: Copy
+    //~^ HELP consider further restricting type parameter `T`
+{
+    (t, t) //~ use of moved value: `t`
+}
+
+fn duplicate_custom_4<T: A>(t: S<T>) -> (S<T>, S<T>)
+where
+    T: B + Trait + Copy,
+    //~^ HELP consider further restricting this bound
+{
+    (t, t) //~ use of moved value: `t`
+}
+
+fn main() {}
diff --git a/src/test/ui/moves/use_of_moved_value_copy_suggestions.rs b/src/test/ui/moves/use_of_moved_value_copy_suggestions.rs
index 0930927c49d66..7cc5189fac017 100644
--- a/src/test/ui/moves/use_of_moved_value_copy_suggestions.rs
+++ b/src/test/ui/moves/use_of_moved_value_copy_suggestions.rs
@@ -1,20 +1,28 @@
+// run-rustfix
+#![allow(dead_code)]
+
 fn duplicate_t<T>(t: T) -> (T, T) {
+    //~^ HELP consider restricting type parameter `T`
     (t, t) //~ use of moved value: `t`
 }
 
 fn duplicate_opt<T>(t: Option<T>) -> (Option<T>, Option<T>) {
+    //~^ HELP consider restricting type parameter `T`
     (t, t) //~ use of moved value: `t`
 }
 
 fn duplicate_tup1<T>(t: (T,)) -> ((T,), (T,)) {
+    //~^ HELP consider restricting type parameter `T`
     (t, t) //~ use of moved value: `t`
 }
 
 fn duplicate_tup2<A, B>(t: (A, B)) -> ((A, B), (A, B)) {
+    //~^ HELP consider restricting type parameters
     (t, t) //~ use of moved value: `t`
 }
 
 fn duplicate_custom<T>(t: S<T>) -> (S<T>, S<T>) {
+    //~^ HELP consider restricting type parameter `T`
     (t, t) //~ use of moved value: `t`
 }
 
@@ -32,12 +40,14 @@ trait B {}
 
 // Test where bounds are added with different bound placements
 fn duplicate_custom_1<T>(t: S<T>) -> (S<T>, S<T>) where {
+    //~^ HELP consider restricting type parameter `T`
     (t, t) //~ use of moved value: `t`
 }
 
 fn duplicate_custom_2<T>(t: S<T>) -> (S<T>, S<T>)
 where
     T: A,
+    //~^ HELP consider further restricting this bound
 {
     (t, t) //~ use of moved value: `t`
 }
@@ -46,6 +56,7 @@ fn duplicate_custom_3<T>(t: S<T>) -> (S<T>, S<T>)
 where
     T: A,
     T: B,
+    //~^ HELP consider further restricting type parameter `T`
 {
     (t, t) //~ use of moved value: `t`
 }
@@ -53,13 +64,9 @@ where
 fn duplicate_custom_4<T: A>(t: S<T>) -> (S<T>, S<T>)
 where
     T: B,
+    //~^ HELP consider further restricting this bound
 {
     (t, t) //~ use of moved value: `t`
 }
 
-// `Rc` is not ever `Copy`, we should not suggest adding `T: Copy` constraint
-fn duplicate_rc<T>(t: std::rc::Rc<T>) -> (std::rc::Rc<T>, std::rc::Rc<T>) {
-    (t, t) //~ use of moved value: `t`
-}
-
 fn main() {}
diff --git a/src/test/ui/moves/use_of_moved_value_copy_suggestions.stderr b/src/test/ui/moves/use_of_moved_value_copy_suggestions.stderr
index c32ac2cd78aa0..8e72697ca30bb 100644
--- a/src/test/ui/moves/use_of_moved_value_copy_suggestions.stderr
+++ b/src/test/ui/moves/use_of_moved_value_copy_suggestions.stderr
@@ -1,8 +1,9 @@
 error[E0382]: use of moved value: `t`
-  --> $DIR/use_of_moved_value_copy_suggestions.rs:2:9
+  --> $DIR/use_of_moved_value_copy_suggestions.rs:6:9
    |
 LL | fn duplicate_t<T>(t: T) -> (T, T) {
    |                   - move occurs because `t` has type `T`, which does not implement the `Copy` trait
+LL |
 LL |     (t, t)
    |      -  ^ value used here after move
    |      |
@@ -14,10 +15,11 @@ LL | fn duplicate_t<T: Copy>(t: T) -> (T, T) {
    |                 ++++++
 
 error[E0382]: use of moved value: `t`
-  --> $DIR/use_of_moved_value_copy_suggestions.rs:6:9
+  --> $DIR/use_of_moved_value_copy_suggestions.rs:11:9
    |
 LL | fn duplicate_opt<T>(t: Option<T>) -> (Option<T>, Option<T>) {
    |                     - move occurs because `t` has type `Option<T>`, which does not implement the `Copy` trait
+LL |
 LL |     (t, t)
    |      -  ^ value used here after move
    |      |
@@ -29,10 +31,11 @@ LL | fn duplicate_opt<T: Copy>(t: Option<T>) -> (Option<T>, Option<T>) {
    |                   ++++++
 
 error[E0382]: use of moved value: `t`
-  --> $DIR/use_of_moved_value_copy_suggestions.rs:10:9
+  --> $DIR/use_of_moved_value_copy_suggestions.rs:16:9
    |
 LL | fn duplicate_tup1<T>(t: (T,)) -> ((T,), (T,)) {
    |                      - move occurs because `t` has type `(T,)`, which does not implement the `Copy` trait
+LL |
 LL |     (t, t)
    |      -  ^ value used here after move
    |      |
@@ -44,10 +47,11 @@ LL | fn duplicate_tup1<T: Copy>(t: (T,)) -> ((T,), (T,)) {
    |                    ++++++
 
 error[E0382]: use of moved value: `t`
-  --> $DIR/use_of_moved_value_copy_suggestions.rs:14:9
+  --> $DIR/use_of_moved_value_copy_suggestions.rs:21:9
    |
 LL | fn duplicate_tup2<A, B>(t: (A, B)) -> ((A, B), (A, B)) {
    |                         - move occurs because `t` has type `(A, B)`, which does not implement the `Copy` trait
+LL |
 LL |     (t, t)
    |      -  ^ value used here after move
    |      |
@@ -59,10 +63,11 @@ LL | fn duplicate_tup2<A: Copy, B: Copy>(t: (A, B)) -> ((A, B), (A, B)) {
    |                    ++++++   ++++++
 
 error[E0382]: use of moved value: `t`
-  --> $DIR/use_of_moved_value_copy_suggestions.rs:18:9
+  --> $DIR/use_of_moved_value_copy_suggestions.rs:26:9
    |
 LL | fn duplicate_custom<T>(t: S<T>) -> (S<T>, S<T>) {
    |                        - move occurs because `t` has type `S<T>`, which does not implement the `Copy` trait
+LL |
 LL |     (t, t)
    |      -  ^ value used here after move
    |      |
@@ -74,10 +79,11 @@ LL | fn duplicate_custom<T: Trait + Copy>(t: S<T>) -> (S<T>, S<T>) {
    |                      ++++++++++++++
 
 error[E0382]: use of moved value: `t`
-  --> $DIR/use_of_moved_value_copy_suggestions.rs:35:9
+  --> $DIR/use_of_moved_value_copy_suggestions.rs:44:9
    |
 LL | fn duplicate_custom_1<T>(t: S<T>) -> (S<T>, S<T>) where {
    |                          - move occurs because `t` has type `S<T>`, which does not implement the `Copy` trait
+LL |
 LL |     (t, t)
    |      -  ^ value used here after move
    |      |
@@ -89,7 +95,7 @@ LL | fn duplicate_custom_1<T: Trait + Copy>(t: S<T>) -> (S<T>, S<T>) where {
    |                        ++++++++++++++
 
 error[E0382]: use of moved value: `t`
-  --> $DIR/use_of_moved_value_copy_suggestions.rs:42:9
+  --> $DIR/use_of_moved_value_copy_suggestions.rs:52:9
    |
 LL | fn duplicate_custom_2<T>(t: S<T>) -> (S<T>, S<T>)
    |                          - move occurs because `t` has type `S<T>`, which does not implement the `Copy` trait
@@ -105,7 +111,7 @@ LL |     T: A + Trait + Copy,
    |          ++++++++++++++
 
 error[E0382]: use of moved value: `t`
-  --> $DIR/use_of_moved_value_copy_suggestions.rs:50:9
+  --> $DIR/use_of_moved_value_copy_suggestions.rs:61:9
    |
 LL | fn duplicate_custom_3<T>(t: S<T>) -> (S<T>, S<T>)
    |                          - move occurs because `t` has type `S<T>`, which does not implement the `Copy` trait
@@ -121,7 +127,7 @@ LL |     T: B, T: Trait, T: Copy
    |         ~~~~~~~~~~~~~~~~~~~
 
 error[E0382]: use of moved value: `t`
-  --> $DIR/use_of_moved_value_copy_suggestions.rs:57:9
+  --> $DIR/use_of_moved_value_copy_suggestions.rs:69:9
    |
 LL | fn duplicate_custom_4<T: A>(t: S<T>) -> (S<T>, S<T>)
    |                             - move occurs because `t` has type `S<T>`, which does not implement the `Copy` trait
@@ -136,16 +142,6 @@ help: consider further restricting this bound
 LL |     T: B + Trait + Copy,
    |          ++++++++++++++
 
-error[E0382]: use of moved value: `t`
-  --> $DIR/use_of_moved_value_copy_suggestions.rs:62:9
-   |
-LL | fn duplicate_rc<T>(t: std::rc::Rc<T>) -> (std::rc::Rc<T>, std::rc::Rc<T>) {
-   |                    - move occurs because `t` has type `Rc<T>`, which does not implement the `Copy` trait
-LL |     (t, t)
-   |      -  ^ value used here after move
-   |      |
-   |      value moved here
-
-error: aborting due to 10 previous errors
+error: aborting due to 9 previous errors
 
 For more information about this error, try `rustc --explain E0382`.