Auto merge of #3626 - phansch:rustfix_works, r=oli-obk

Add run-rustfix where it already works

This PR adds `// run-rustfix` headers to tests for `MachineApplicable` lints where
applying the suggestions works without any errors.

Author: bors

tests/ui/cast_lossless_float.fixed

@@ -0,0 +1,26 @@
+// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// run-rustfix
+
+#[warn(clippy::cast_lossless)]
+#[allow(clippy::no_effect, clippy::unnecessary_operation)]
+fn main() {
+    // Test clippy::cast_lossless with casts to floating-point types
+    f32::from(1i8);
+    f64::from(1i8);
+    f32::from(1u8);
+    f64::from(1u8);
+    f32::from(1i16);
+    f64::from(1i16);
+    f32::from(1u16);
+    f64::from(1u16);
+    f64::from(1i32);
+    f64::from(1u32);
+}

tests/ui/cast_lossless_float.rs

@@ -7,6 +7,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// run-rustfix
+
 #[warn(clippy::cast_lossless)]
 #[allow(clippy::no_effect, clippy::unnecessary_operation)]
 fn main() {

tests/ui/cast_lossless_float.stderr

@@ -1,61 +1,61 @@
 error: casting i8 to f32 may become silently lossy if types change
-  --> $DIR/cast_lossless_float.rs:14:5
+  --> $DIR/cast_lossless_float.rs:16:5
    |
 LL |     1i8 as f32;
    |     ^^^^^^^^^^ help: try: `f32::from(1i8)`
    |
    = note: `-D clippy::cast-lossless` implied by `-D warnings`
 
 error: casting i8 to f64 may become silently lossy if types change
-  --> $DIR/cast_lossless_float.rs:15:5
+  --> $DIR/cast_lossless_float.rs:17:5
    |
 LL |     1i8 as f64;
    |     ^^^^^^^^^^ help: try: `f64::from(1i8)`
 
 error: casting u8 to f32 may become silently lossy if types change
-  --> $DIR/cast_lossless_float.rs:16:5
+  --> $DIR/cast_lossless_float.rs:18:5
    |
 LL |     1u8 as f32;
    |     ^^^^^^^^^^ help: try: `f32::from(1u8)`
 
 error: casting u8 to f64 may become silently lossy if types change
-  --> $DIR/cast_lossless_float.rs:17:5
+  --> $DIR/cast_lossless_float.rs:19:5
    |
 LL |     1u8 as f64;
    |     ^^^^^^^^^^ help: try: `f64::from(1u8)`
 
 error: casting i16 to f32 may become silently lossy if types change
-  --> $DIR/cast_lossless_float.rs:18:5
+  --> $DIR/cast_lossless_float.rs:20:5
    |
 LL |     1i16 as f32;
    |     ^^^^^^^^^^^ help: try: `f32::from(1i16)`
 
 error: casting i16 to f64 may become silently lossy if types change
-  --> $DIR/cast_lossless_float.rs:19:5
+  --> $DIR/cast_lossless_float.rs:21:5
    |
 LL |     1i16 as f64;
    |     ^^^^^^^^^^^ help: try: `f64::from(1i16)`
 
 error: casting u16 to f32 may become silently lossy if types change
-  --> $DIR/cast_lossless_float.rs:20:5
+  --> $DIR/cast_lossless_float.rs:22:5
    |
 LL |     1u16 as f32;
    |     ^^^^^^^^^^^ help: try: `f32::from(1u16)`
 
 error: casting u16 to f64 may become silently lossy if types change
-  --> $DIR/cast_lossless_float.rs:21:5
+  --> $DIR/cast_lossless_float.rs:23:5
    |
 LL |     1u16 as f64;
    |     ^^^^^^^^^^^ help: try: `f64::from(1u16)`
 
 error: casting i32 to f64 may become silently lossy if types change
-  --> $DIR/cast_lossless_float.rs:22:5
+  --> $DIR/cast_lossless_float.rs:24:5
    |
 LL |     1i32 as f64;
    |     ^^^^^^^^^^^ help: try: `f64::from(1i32)`
 
 error: casting u32 to f64 may become silently lossy if types change
-  --> $DIR/cast_lossless_float.rs:23:5
+  --> $DIR/cast_lossless_float.rs:25:5
    |
 LL |     1u32 as f64;
    |     ^^^^^^^^^^^ help: try: `f64::from(1u32)`

tests/ui/cast_lossless_integer.fixed

@@ -0,0 +1,34 @@
+// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// run-rustfix
+
+#[warn(clippy::cast_lossless)]
+#[allow(clippy::no_effect, clippy::unnecessary_operation)]
+fn main() {
+    // Test clippy::cast_lossless with casts to integer types
+    i16::from(1i8);
+    i32::from(1i8);
+    i64::from(1i8);
+    i16::from(1u8);
+    i32::from(1u8);
+    i64::from(1u8);
+    u16::from(1u8);
+    u32::from(1u8);
+    u64::from(1u8);
+    i32::from(1i16);
+    i64::from(1i16);
+    i32::from(1u16);
+    i64::from(1u16);
+    u32::from(1u16);
+    u64::from(1u16);
+    i64::from(1i32);
+    i64::from(1u32);
+    u64::from(1u32);
+}

tests/ui/cast_lossless_integer.rs

@@ -7,6 +7,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// run-rustfix
+
 #[warn(clippy::cast_lossless)]
 #[allow(clippy::no_effect, clippy::unnecessary_operation)]
 fn main() {

tests/ui/cast_lossless_integer.stderr

@@ -1,109 +1,109 @@
 error: casting i8 to i16 may become silently lossy if types change
-  --> $DIR/cast_lossless_integer.rs:14:5
+  --> $DIR/cast_lossless_integer.rs:16:5
    |
 LL |     1i8 as i16;
    |     ^^^^^^^^^^ help: try: `i16::from(1i8)`
    |
    = note: `-D clippy::cast-lossless` implied by `-D warnings`
 
 error: casting i8 to i32 may become silently lossy if types change
-  --> $DIR/cast_lossless_integer.rs:15:5
+  --> $DIR/cast_lossless_integer.rs:17:5
    |
 LL |     1i8 as i32;
    |     ^^^^^^^^^^ help: try: `i32::from(1i8)`
 
 error: casting i8 to i64 may become silently lossy if types change
-  --> $DIR/cast_lossless_integer.rs:16:5
+  --> $DIR/cast_lossless_integer.rs:18:5
    |
 LL |     1i8 as i64;
    |     ^^^^^^^^^^ help: try: `i64::from(1i8)`
 
 error: casting u8 to i16 may become silently lossy if types change
-  --> $DIR/cast_lossless_integer.rs:17:5
+  --> $DIR/cast_lossless_integer.rs:19:5
    |
 LL |     1u8 as i16;
    |     ^^^^^^^^^^ help: try: `i16::from(1u8)`
 
 error: casting u8 to i32 may become silently lossy if types change
-  --> $DIR/cast_lossless_integer.rs:18:5
+  --> $DIR/cast_lossless_integer.rs:20:5
    |
 LL |     1u8 as i32;
    |     ^^^^^^^^^^ help: try: `i32::from(1u8)`
 
 error: casting u8 to i64 may become silently lossy if types change
-  --> $DIR/cast_lossless_integer.rs:19:5
+  --> $DIR/cast_lossless_integer.rs:21:5
    |
 LL |     1u8 as i64;
    |     ^^^^^^^^^^ help: try: `i64::from(1u8)`
 
 error: casting u8 to u16 may become silently lossy if types change
-  --> $DIR/cast_lossless_integer.rs:20:5
+  --> $DIR/cast_lossless_integer.rs:22:5
    |
 LL |     1u8 as u16;
    |     ^^^^^^^^^^ help: try: `u16::from(1u8)`
 
 error: casting u8 to u32 may become silently lossy if types change
-  --> $DIR/cast_lossless_integer.rs:21:5
+  --> $DIR/cast_lossless_integer.rs:23:5
    |
 LL |     1u8 as u32;
    |     ^^^^^^^^^^ help: try: `u32::from(1u8)`
 
 error: casting u8 to u64 may become silently lossy if types change
-  --> $DIR/cast_lossless_integer.rs:22:5
+  --> $DIR/cast_lossless_integer.rs:24:5
    |
 LL |     1u8 as u64;
    |     ^^^^^^^^^^ help: try: `u64::from(1u8)`
 
 error: casting i16 to i32 may become silently lossy if types change
-  --> $DIR/cast_lossless_integer.rs:23:5
+  --> $DIR/cast_lossless_integer.rs:25:5
    |
 LL |     1i16 as i32;
    |     ^^^^^^^^^^^ help: try: `i32::from(1i16)`
 
 error: casting i16 to i64 may become silently lossy if types change
-  --> $DIR/cast_lossless_integer.rs:24:5
+  --> $DIR/cast_lossless_integer.rs:26:5
    |
 LL |     1i16 as i64;
    |     ^^^^^^^^^^^ help: try: `i64::from(1i16)`
 
 error: casting u16 to i32 may become silently lossy if types change
-  --> $DIR/cast_lossless_integer.rs:25:5
+  --> $DIR/cast_lossless_integer.rs:27:5
    |
 LL |     1u16 as i32;
    |     ^^^^^^^^^^^ help: try: `i32::from(1u16)`
 
 error: casting u16 to i64 may become silently lossy if types change
-  --> $DIR/cast_lossless_integer.rs:26:5
+  --> $DIR/cast_lossless_integer.rs:28:5
    |
 LL |     1u16 as i64;
    |     ^^^^^^^^^^^ help: try: `i64::from(1u16)`
 
 error: casting u16 to u32 may become silently lossy if types change
-  --> $DIR/cast_lossless_integer.rs:27:5
+  --> $DIR/cast_lossless_integer.rs:29:5
    |
 LL |     1u16 as u32;
    |     ^^^^^^^^^^^ help: try: `u32::from(1u16)`
 
 error: casting u16 to u64 may become silently lossy if types change
-  --> $DIR/cast_lossless_integer.rs:28:5
+  --> $DIR/cast_lossless_integer.rs:30:5
    |
 LL |     1u16 as u64;
    |     ^^^^^^^^^^^ help: try: `u64::from(1u16)`
 
 error: casting i32 to i64 may become silently lossy if types change
-  --> $DIR/cast_lossless_integer.rs:29:5
+  --> $DIR/cast_lossless_integer.rs:31:5
    |
 LL |     1i32 as i64;
    |     ^^^^^^^^^^^ help: try: `i64::from(1i32)`
 
 error: casting u32 to i64 may become silently lossy if types change
-  --> $DIR/cast_lossless_integer.rs:30:5
+  --> $DIR/cast_lossless_integer.rs:32:5
    |
 LL |     1u32 as i64;
    |     ^^^^^^^^^^^ help: try: `i64::from(1u32)`
 
 error: casting u32 to u64 may become silently lossy if types change
-  --> $DIR/cast_lossless_integer.rs:31:5
+  --> $DIR/cast_lossless_integer.rs:33:5
    |
 LL |     1u32 as u64;
    |     ^^^^^^^^^^^ help: try: `u64::from(1u32)`

tests/ui/double_comparison.fixed

@@ -0,0 +1,39 @@
+// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// run-rustfix
+
+fn main() {
+    let x = 1;
+    let y = 2;
+    if x <= y {
+        // do something
+    }
+    if x <= y {
+        // do something
+    }
+    if x >= y {
+        // do something
+    }
+    if x >= y {
+        // do something
+    }
+    if x != y {
+        // do something
+    }
+    if x != y {
+        // do something
+    }
+    if x == y {
+        // do something
+    }
+    if x == y {
+        // do something
+    }
+}

tests/ui/double_comparison.rs

@@ -7,6 +7,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// run-rustfix
+
 fn main() {
     let x = 1;
     let y = 2;

tests/ui/double_comparison.stderr

@@ -1,49 +1,49 @@
 error: This binary expression can be simplified
-  --> $DIR/double_comparison.rs:13:8
+  --> $DIR/double_comparison.rs:15:8
    |
 LL |     if x == y || x < y {
    |        ^^^^^^^^^^^^^^^ help: try: `x <= y`
    |
    = note: `-D clippy::double-comparisons` implied by `-D warnings`
 
 error: This binary expression can be simplified
-  --> $DIR/double_comparison.rs:16:8
+  --> $DIR/double_comparison.rs:18:8
    |
 LL |     if x < y || x == y {
    |        ^^^^^^^^^^^^^^^ help: try: `x <= y`
 
 error: This binary expression can be simplified
-  --> $DIR/double_comparison.rs:19:8
+  --> $DIR/double_comparison.rs:21:8
    |
 LL |     if x == y || x > y {
    |        ^^^^^^^^^^^^^^^ help: try: `x >= y`
 
 error: This binary expression can be simplified
-  --> $DIR/double_comparison.rs:22:8
+  --> $DIR/double_comparison.rs:24:8
    |
 LL |     if x > y || x == y {
    |        ^^^^^^^^^^^^^^^ help: try: `x >= y`
 
 error: This binary expression can be simplified
-  --> $DIR/double_comparison.rs:25:8
+  --> $DIR/double_comparison.rs:27:8
    |
 LL |     if x < y || x > y {
    |        ^^^^^^^^^^^^^^ help: try: `x != y`
 
 error: This binary expression can be simplified
-  --> $DIR/double_comparison.rs:28:8
+  --> $DIR/double_comparison.rs:30:8
    |
 LL |     if x > y || x < y {
    |        ^^^^^^^^^^^^^^ help: try: `x != y`
 
 error: This binary expression can be simplified
-  --> $DIR/double_comparison.rs:31:8
+  --> $DIR/double_comparison.rs:33:8
    |
 LL |     if x <= y && x >= y {
    |        ^^^^^^^^^^^^^^^^ help: try: `x == y`
 
 error: This binary expression can be simplified
-  --> $DIR/double_comparison.rs:34:8
+  --> $DIR/double_comparison.rs:36:8
    |
 LL |     if x >= y && x <= y {
    |        ^^^^^^^^^^^^^^^^ help: try: `x == y`