Update upstream source from tag 'upstream/1.52.1+dfsg1'

[rustc.git] / src / tools / clippy / tests / ui / wildcard_enum_match_arm.rs

diff --git a/src/tools/clippy/tests/ui/wildcard_enum_match_arm.rs b/src/tools/clippy/tests/ui/wildcard_enum_match_arm.rs
new file mode 100644 (file)
index 0000000..2dbf726
--- /dev/null
+++ b/src/tools/clippy/tests/ui/wildcard_enum_match_arm.rs
@@ -0,0 +1,103 @@
+// run-rustfix
+
+#![deny(clippy::wildcard_enum_match_arm)]
+#![allow(
+    unreachable_code,
+    unused_variables,
+    dead_code,
+    clippy::single_match,
+    clippy::wildcard_in_or_patterns,
+    clippy::unnested_or_patterns,
+    clippy::diverging_sub_expression
+)]
+
+use std::io::ErrorKind;
+
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+enum Color {
+    Red,
+    Green,
+    Blue,
+    Rgb(u8, u8, u8),
+    Cyan,
+}
+
+impl Color {
+    fn is_monochrome(self) -> bool {
+        match self {
+            Color::Red | Color::Green | Color::Blue => true,
+            Color::Rgb(r, g, b) => r | g == 0 || r | b == 0 || g | b == 0,
+            Color::Cyan => false,
+        }
+    }
+}
+
+fn main() {
+    let color = Color::Rgb(0, 0, 127);
+    match color {
+        Color::Red => println!("Red"),
+        _ => eprintln!("Not red"),
+    };
+    match color {
+        Color::Red => println!("Red"),
+        _not_red => eprintln!("Not red"),
+    };
+    let _str = match color {
+        Color::Red => "Red".to_owned(),
+        not_red => format!("{:?}", not_red),
+    };
+    match color {
+        Color::Red => {},
+        Color::Green => {},
+        Color::Blue => {},
+        Color::Cyan => {},
+        c if c.is_monochrome() => {},
+        Color::Rgb(_, _, _) => {},
+    };
+    let _str = match color {
+        Color::Red => "Red",
+        c @ Color::Green | c @ Color::Blue | c @ Color::Rgb(_, _, _) | c @ Color::Cyan => "Not red",
+    };
+    match color {
+        Color::Rgb(r, _, _) if r > 0 => "Some red",
+        _ => "No red",
+    };
+    match color {
+        Color::Red | Color::Green | Color::Blue | Color::Cyan => {},
+        Color::Rgb(..) => {},
+    };
+    let x: u8 = unimplemented!();
+    match x {
+        0 => {},
+        140 => {},
+        _ => {},
+    };
+    // We need to use an enum not defined in this test because non_exhaustive is ignored for the
+    // purposes of dead code analysis within a crate.
+    let error_kind = ErrorKind::NotFound;
+    match error_kind {
+        ErrorKind::NotFound => {},
+        _ => {},
+    }
+    match error_kind {
+        ErrorKind::NotFound => {},
+        ErrorKind::PermissionDenied => {},
+        ErrorKind::ConnectionRefused => {},
+        ErrorKind::ConnectionReset => {},
+        ErrorKind::ConnectionAborted => {},
+        ErrorKind::NotConnected => {},
+        ErrorKind::AddrInUse => {},
+        ErrorKind::AddrNotAvailable => {},
+        ErrorKind::BrokenPipe => {},
+        ErrorKind::AlreadyExists => {},
+        ErrorKind::WouldBlock => {},
+        ErrorKind::InvalidInput => {},
+        ErrorKind::InvalidData => {},
+        ErrorKind::TimedOut => {},
+        ErrorKind::WriteZero => {},
+        ErrorKind::Interrupted => {},
+        ErrorKind::Other => {},
+        ErrorKind::UnexpectedEof => {},
+        _ => {},
+    }
+}