diff options
Diffstat (limited to 'tests/ui/impl-trait/universal_in_impl_trait_in_parameters.rs')
-rw-r--r-- | tests/ui/impl-trait/universal_in_impl_trait_in_parameters.rs | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/tests/ui/impl-trait/universal_in_impl_trait_in_parameters.rs b/tests/ui/impl-trait/universal_in_impl_trait_in_parameters.rs new file mode 100644 index 000000000..e98912d95 --- /dev/null +++ b/tests/ui/impl-trait/universal_in_impl_trait_in_parameters.rs @@ -0,0 +1,30 @@ +// run-pass + +use std::fmt::Display; + +fn check_display_eq(iter: impl IntoIterator<Item = impl Display>) { + let mut collected = String::new(); + for it in iter { + let disp = format!("{} ", it); + collected.push_str(&disp); + } + assert_eq!("0 3 27 823 4891 1 0", collected.trim()); +} + +fn main() { + let i32_list = [0i32, 3, 27, 823, 4891, 1, 0]; + let i32_list_vec = vec![0i32, 3, 27, 823, 4891, 1, 0]; + let u32_list = [0u32, 3, 27, 823, 4891, 1, 0]; + let u32_list_vec = vec![0u32, 3, 27, 823, 4891, 1, 0]; + let u16_list = [0u16, 3, 27, 823, 4891, 1, 0]; + let str_list = ["0", "3", "27", "823", "4891", "1", "0"]; + let str_list_vec = vec!["0", "3", "27", "823", "4891", "1", "0"]; + + check_display_eq(&i32_list); + check_display_eq(i32_list_vec); + check_display_eq(&u32_list); + check_display_eq(u32_list_vec); + check_display_eq(&u16_list); + check_display_eq(&str_list); + check_display_eq(str_list_vec); +} |