diff options
Diffstat (limited to 'src/tools/clippy/tests/ui/unnecessary_join.rs')
-rw-r--r-- | src/tools/clippy/tests/ui/unnecessary_join.rs | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/unnecessary_join.rs b/src/tools/clippy/tests/ui/unnecessary_join.rs new file mode 100644 index 000000000..0a21656a7 --- /dev/null +++ b/src/tools/clippy/tests/ui/unnecessary_join.rs @@ -0,0 +1,37 @@ +// run-rustfix + +#![warn(clippy::unnecessary_join)] + +fn main() { + // should be linted + let vector = vec!["hello", "world"]; + let output = vector + .iter() + .map(|item| item.to_uppercase()) + .collect::<Vec<String>>() + .join(""); + println!("{}", output); + + // should be linted + let vector = vec!["hello", "world"]; + let output = vector + .iter() + .map(|item| item.to_uppercase()) + .collect::<Vec<_>>() + .join(""); + println!("{}", output); + + // should not be linted + let vector = vec!["hello", "world"]; + let output = vector + .iter() + .map(|item| item.to_uppercase()) + .collect::<Vec<String>>() + .join("\n"); + println!("{}", output); + + // should not be linted + let vector = vec!["hello", "world"]; + let output = vector.iter().map(|item| item.to_uppercase()).collect::<String>(); + println!("{}", output); +} |