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

[rustc.git] / src / tools / clippy / tests / ui / option_as_ref_deref.fixed

diff --git a/src/tools/clippy/tests/ui/option_as_ref_deref.fixed b/src/tools/clippy/tests/ui/option_as_ref_deref.fixed
new file mode 100644 (file)
index 0000000..07d7f0b
--- /dev/null
+++ b/src/tools/clippy/tests/ui/option_as_ref_deref.fixed
@@ -0,0 +1,44 @@
+// run-rustfix
+
+#![allow(unused_imports, clippy::redundant_clone)]
+#![warn(clippy::option_as_ref_deref)]
+
+use std::ffi::{CString, OsString};
+use std::ops::{Deref, DerefMut};
+use std::path::PathBuf;
+
+fn main() {
+    let mut opt = Some(String::from("123"));
+
+    let _ = opt.clone().as_deref().map(str::len);
+
+    #[rustfmt::skip]
+    let _ = opt.clone().as_deref()
+        .map(str::len);
+
+    let _ = opt.as_deref_mut();
+
+    let _ = opt.as_deref();
+    let _ = opt.as_deref();
+    let _ = opt.as_deref_mut();
+    let _ = opt.as_deref_mut();
+    let _ = Some(CString::new(vec![]).unwrap()).as_deref();
+    let _ = Some(OsString::new()).as_deref();
+    let _ = Some(PathBuf::new()).as_deref();
+    let _ = Some(Vec::<()>::new()).as_deref();
+    let _ = Some(Vec::<()>::new()).as_deref_mut();
+
+    let _ = opt.as_deref();
+    let _ = opt.clone().as_deref_mut().map(|x| x.len());
+
+    let vc = vec![String::new()];
+    let _ = Some(1_usize).as_ref().map(|x| vc[*x].as_str()); // should not be linted
+
+    let _: Option<&str> = Some(&String::new()).as_ref().map(|x| x.as_str()); // should not be linted
+
+    let _ = opt.as_deref();
+    let _ = opt.as_deref_mut();
+
+    // Issue #5927
+    let _ = opt.as_deref();
+}