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Diffstat (limited to '')
-rw-r--r-- | src/tools/clippy/tests/ui/print_literal.rs | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/print_literal.rs b/src/tools/clippy/tests/ui/print_literal.rs new file mode 100644 index 000000000..8665a3bb2 --- /dev/null +++ b/src/tools/clippy/tests/ui/print_literal.rs @@ -0,0 +1,38 @@ +#![warn(clippy::print_literal)] + +fn main() { + // these should be fine + print!("Hello"); + println!("Hello"); + let world = "world"; + println!("Hello {}", world); + println!("Hello {world}", world = world); + println!("3 in hex is {:X}", 3); + println!("2 + 1 = {:.4}", 3); + println!("2 + 1 = {:5.4}", 3); + println!("Debug test {:?}", "hello, world"); + println!("{0:8} {1:>8}", "hello", "world"); + println!("{1:8} {0:>8}", "hello", "world"); + println!("{foo:8} {bar:>8}", foo = "hello", bar = "world"); + println!("{bar:8} {foo:>8}", foo = "hello", bar = "world"); + println!("{number:>width$}", number = 1, width = 6); + println!("{number:>0width$}", number = 1, width = 6); + println!("{} of {:b} people know binary, the other half doesn't", 1, 2); + println!("10 / 4 is {}", 2.5); + println!("2 + 1 = {}", 3); + + // these should throw warnings + print!("Hello {}", "world"); + println!("Hello {} {}", world, "world"); + println!("Hello {}", "world"); + + // positional args don't change the fact + // that we're using a literal -- this should + // throw a warning + println!("{0} {1}", "hello", "world"); + println!("{1} {0}", "hello", "world"); + + // named args shouldn't change anything either + println!("{foo} {bar}", foo = "hello", bar = "world"); + println!("{bar} {foo}", foo = "hello", bar = "world"); +} |