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Diffstat (limited to '')
-rw-r--r-- | src/tools/clippy/tests/ui/string_add.rs | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/string_add.rs b/src/tools/clippy/tests/ui/string_add.rs new file mode 100644 index 000000000..30fd17c59 --- /dev/null +++ b/src/tools/clippy/tests/ui/string_add.rs @@ -0,0 +1,26 @@ +// aux-build:macro_rules.rs + +#[macro_use] +extern crate macro_rules; + +#[warn(clippy::string_add)] +#[allow(clippy::string_add_assign, unused)] +fn main() { + // ignores assignment distinction + let mut x = "".to_owned(); + + for _ in 1..3 { + x = x + "."; + } + + let y = "".to_owned(); + let z = y + "..."; + + assert_eq!(&x, &z); + + let mut x = 1; + x = x + 1; + assert_eq!(2, x); + + string_add!(); +} |