Auto merge of #9327 - Serial-ATA:non_ascii_literal_macro, r=Alexendoo

Fix [`non_ascii_literal`] in tests

changelog: Don't lint [`non_ascii_literal`] when using non-ascii comments in tests
changelog: Don't lint [`non_ascii_literal`] when `allow`ed on tests

closes: #7739
closes: #8263

4 files changed, 110 insertions, 39 deletions

diff --git a/clippy_lints/src/unicode.rs b/clippy_lints/src/unicode.rs
index cc64d17be05..8980283e5c8 100644
--- a/clippy_lints/src/unicode.rs
+++ b/clippy_lints/src/unicode.rs
@@ -1,5 +1,6 @@
 use clippy_utils::diagnostics::span_lint_and_sugg;
 use clippy_utils::is_lint_allowed;
+use clippy_utils::macros::span_is_local;
 use clippy_utils::source::snippet;
 use rustc_ast::ast::LitKind;
 use rustc_errors::Applicability;
@@ -98,6 +99,10 @@ fn escape<T: Iterator<Item = char>>(s: T) -> String {
 }
 
 fn check_str(cx: &LateContext<'_>, span: Span, id: HirId) {
+    if !span_is_local(span) {
+        return;
+    }
+
     let string = snippet(cx, span, "");
     if string.chars().any(|c| ['\u{200B}', '\u{ad}', '\u{2060}'].contains(&c)) {
         span_lint_and_sugg(
@@ -113,6 +118,7 @@ fn check_str(cx: &LateContext<'_>, span: Span, id: HirId) {
             Applicability::MachineApplicable,
         );
     }
+
     if string.chars().any(|c| c as u32 > 0x7F) {
         span_lint_and_sugg(
             cx,
@@ -128,6 +134,7 @@ fn check_str(cx: &LateContext<'_>, span: Span, id: HirId) {
             Applicability::MachineApplicable,
         );
     }
+
     if is_lint_allowed(cx, NON_ASCII_LITERAL, id) && string.chars().zip(string.nfc()).any(|(a, b)| a != b) {
         span_lint_and_sugg(
             cx,
diff --git a/tests/ui/unicode.fixed b/tests/ui/unicode.fixed
index 328cda369e1..94b4723452f 100644
--- a/tests/ui/unicode.fixed
+++ b/tests/ui/unicode.fixed
@@ -1,4 +1,7 @@
 // run-rustfix
+// compile-flags: --test
+#![allow(dead_code)]
+
 #[warn(clippy::invisible_characters)]
 fn zero() {
     print!("Here >\u{200B}< is a ZWS, and \u{200B}another");
@@ -15,22 +18,43 @@ fn canon() {
     print!("a\u{0300}h?"); // also ok
 }
 
-#[warn(clippy::non_ascii_literal)]
-fn uni() {
-    print!("\u{dc}ben!");
-    print!("\u{DC}ben!"); // this is ok
-}
+mod non_ascii_literal {
+    #![deny(clippy::non_ascii_literal)]
+
+    fn uni() {
+        print!("\u{dc}ben!");
+        print!("\u{DC}ben!"); // this is ok
+    }
+
+    // issue 8013
+    fn single_quote() {
+        const _EMPTY_BLOCK: char = '\u{25b1}';
+        const _FULL_BLOCK: char = '\u{25b0}';
+    }
+
+    #[test]
+    pub fn issue_7739() {
+        // Ryū crate: https://github.com/dtolnay/ryu
+    }
+
+    mod issue_8263 {
+        #![deny(clippy::non_ascii_literal)]
+
+        // Re-allow for a single test
+        #[test]
+        #[allow(clippy::non_ascii_literal)]
+        fn allowed() {
+            let _ = "悲しいかな、ここに日本語を書くことはできない。";
+        }
 
-// issue 8013
-#[warn(clippy::non_ascii_literal)]
-fn single_quote() {
-    const _EMPTY_BLOCK: char = '\u{25b1}';
-    const _FULL_BLOCK: char = '\u{25b0}';
+        #[test]
+        fn denied() {
+            let _ = "\u{60b2}\u{3057}\u{3044}\u{304b}\u{306a}\u{3001}\u{3053}\u{3053}\u{306b}\u{65e5}\u{672c}\u{8a9e}\u{3092}\u{66f8}\u{304f}\u{3053}\u{3068}\u{306f}\u{3067}\u{304d}\u{306a}\u{3044}\u{3002}";
+        }
+    }
 }
 
 fn main() {
     zero();
-    uni();
     canon();
-    single_quote();
 }
diff --git a/tests/ui/unicode.rs b/tests/ui/unicode.rs
index 7828d6bcbea..6ad0b255b94 100644
--- a/tests/ui/unicode.rs
+++ b/tests/ui/unicode.rs
@@ -1,4 +1,7 @@
 // run-rustfix
+// compile-flags: --test
+#![allow(dead_code)]
+
 #[warn(clippy::invisible_characters)]
 fn zero() {
     print!("Here >​< is a ZWS, and ​another");
@@ -15,22 +18,43 @@ fn canon() {
     print!("a\u{0300}h?"); // also ok
 }
 
-#[warn(clippy::non_ascii_literal)]
-fn uni() {
-    print!("Üben!");
-    print!("\u{DC}ben!"); // this is ok
-}
+mod non_ascii_literal {
+    #![deny(clippy::non_ascii_literal)]
+
+    fn uni() {
+        print!("Üben!");
+        print!("\u{DC}ben!"); // this is ok
+    }
+
+    // issue 8013
+    fn single_quote() {
+        const _EMPTY_BLOCK: char = '▱';
+        const _FULL_BLOCK: char = '▰';
+    }
+
+    #[test]
+    pub fn issue_7739() {
+        // Ryū crate: https://github.com/dtolnay/ryu
+    }
+
+    mod issue_8263 {
+        #![deny(clippy::non_ascii_literal)]
+
+        // Re-allow for a single test
+        #[test]
+        #[allow(clippy::non_ascii_literal)]
+        fn allowed() {
+            let _ = "悲しいかな、ここに日本語を書くことはできない。";
+        }
 
-// issue 8013
-#[warn(clippy::non_ascii_literal)]
-fn single_quote() {
-    const _EMPTY_BLOCK: char = '▱';
-    const _FULL_BLOCK: char = '▰';
+        #[test]
+        fn denied() {
+            let _ = "悲しいかな、ここに日本語を書くことはできない。";
+        }
+    }
 }
 
 fn main() {
     zero();
-    uni();
     canon();
-    single_quote();
 }
diff --git a/tests/ui/unicode.stderr b/tests/ui/unicode.stderr
index 01d3f3c0296..ea74a81451e 100644
--- a/tests/ui/unicode.stderr
+++ b/tests/ui/unicode.stderr
@@ -1,5 +1,5 @@
 error: invisible character detected
-  --> $DIR/unicode.rs:4:12
+  --> $DIR/unicode.rs:7:12
    |
 LL |     print!("Here >​< is a ZWS, and ​another");
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider replacing the string with: `"Here >/u{200B}< is a ZWS, and /u{200B}another"`
@@ -7,19 +7,19 @@ LL |     print!("Here >​< is a ZWS, and ​another");
    = note: `-D clippy::invisible-characters` implied by `-D warnings`
 
 error: invisible character detected
-  --> $DIR/unicode.rs:6:12
+  --> $DIR/unicode.rs:9:12
    |
 LL |     print!("Here >­< is a SHY, and ­another");
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider replacing the string with: `"Here >/u{AD}< is a SHY, and /u{AD}another"`
 
 error: invisible character detected
-  --> $DIR/unicode.rs:8:12
+  --> $DIR/unicode.rs:11:12
    |
 LL |     print!("Here >⁠< is a WJ, and ⁠another");
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider replacing the string with: `"Here >/u{2060}< is a WJ, and /u{2060}another"`
 
 error: non-NFC Unicode sequence detected
-  --> $DIR/unicode.rs:14:12
+  --> $DIR/unicode.rs:17:12
    |
 LL |     print!("̀àh?");
    |            ^^^^^ help: consider replacing the string with: `"̀àh?"`
@@ -27,24 +27,40 @@ LL |     print!("̀àh?");
    = note: `-D clippy::unicode-not-nfc` implied by `-D warnings`
 
 error: literal non-ASCII character detected
-  --> $DIR/unicode.rs:20:12
+  --> $DIR/unicode.rs:25:16
    |
-LL |     print!("Üben!");
-   |            ^^^^^^^ help: consider replacing the string with: `"/u{dc}ben!"`
+LL |         print!("Üben!");
+   |                ^^^^^^^ help: consider replacing the string with: `"/u{dc}ben!"`
    |
-   = note: `-D clippy::non-ascii-literal` implied by `-D warnings`
+note: the lint level is defined here
+  --> $DIR/unicode.rs:22:13
+   |
+LL |     #![deny(clippy::non_ascii_literal)]
+   |             ^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: literal non-ASCII character detected
+  --> $DIR/unicode.rs:31:36
+   |
+LL |         const _EMPTY_BLOCK: char = '▱';
+   |                                    ^^^ help: consider replacing the string with: `'/u{25b1}'`
 
 error: literal non-ASCII character detected
-  --> $DIR/unicode.rs:27:32
+  --> $DIR/unicode.rs:32:35
    |
-LL |     const _EMPTY_BLOCK: char = '▱';
-   |                                ^^^ help: consider replacing the string with: `'/u{25b1}'`
+LL |         const _FULL_BLOCK: char = '▰';
+   |                                   ^^^ help: consider replacing the string with: `'/u{25b0}'`
 
 error: literal non-ASCII character detected
-  --> $DIR/unicode.rs:28:31
+  --> $DIR/unicode.rs:52:21
+   |
+LL |             let _ = "悲しいかな、ここに日本語を書くことはできない。";
+   |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider replacing the string with: `"/u{60b2}/u{3057}/u{3044}/u{304b}/u{306a}/u{3001}/u{3053}/u{3053}/u{306b}/u{65e5}/u{672c}/u{8a9e}/u{3092}/u{66f8}/u{304f}/u{3053}/u{3068}/u{306f}/u{3067}/u{304d}/u{306a}/u{3044}/u{3002}"`
+   |
+note: the lint level is defined here
+  --> $DIR/unicode.rs:41:17
    |
-LL |     const _FULL_BLOCK: char = '▰';
-   |                               ^^^ help: consider replacing the string with: `'/u{25b0}'`
+LL |         #![deny(clippy::non_ascii_literal)]
+   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: aborting due to 7 previous errors
+error: aborting due to 8 previous errors