diff options
Diffstat (limited to '')
-rw-r--r-- | src/tools/clippy/tests/ui/inefficient_to_string.rs | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/inefficient_to_string.rs b/src/tools/clippy/tests/ui/inefficient_to_string.rs new file mode 100644 index 000000000..acdc55aa0 --- /dev/null +++ b/src/tools/clippy/tests/ui/inefficient_to_string.rs @@ -0,0 +1,31 @@ +// run-rustfix +#![deny(clippy::inefficient_to_string)] + +use std::borrow::Cow; + +fn main() { + let rstr: &str = "hello"; + let rrstr: &&str = &rstr; + let rrrstr: &&&str = &rrstr; + let _: String = rstr.to_string(); + let _: String = rrstr.to_string(); + let _: String = rrrstr.to_string(); + + let string: String = String::from("hello"); + let rstring: &String = &string; + let rrstring: &&String = &rstring; + let rrrstring: &&&String = &rrstring; + let _: String = string.to_string(); + let _: String = rstring.to_string(); + let _: String = rrstring.to_string(); + let _: String = rrrstring.to_string(); + + let cow: Cow<'_, str> = Cow::Borrowed("hello"); + let rcow: &Cow<'_, str> = &cow; + let rrcow: &&Cow<'_, str> = &rcow; + let rrrcow: &&&Cow<'_, str> = &rrcow; + let _: String = cow.to_string(); + let _: String = rcow.to_string(); + let _: String = rrcow.to_string(); + let _: String = rrrcow.to_string(); +} |