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Add test for Formatter flags.

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This commit is contained in:
Mara Bos 2025-03-21 17:04:29 +01:00
parent 9b7060ad31
commit d7685f0d0b
1 changed files with 20 additions and 0 deletions
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20
library/coretests/tests/fmt/mod.rs
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@ -58,6 +58,7 @@ fn formatting_options_ctor() {
}
#[test]
#[allow(deprecated)]
fn formatting_options_flags() {
use core::fmt::*;
for sign in [None, Some(Sign::Plus), Some(Sign::Minus)] {
@ -75,6 +76,25 @@ fn formatting_options_flags() {
assert_eq!(formatting_options.get_alternate(), alternate);
assert_eq!(formatting_options.get_sign_aware_zero_pad(), sign_aware_zero_pad);
assert_eq!(formatting_options.get_debug_as_hex(), debug_as_hex);
let mut output = String::new();
let fmt = Formatter::new(&mut output, formatting_options);
assert_eq!(fmt.options(), formatting_options);
assert_eq!(fmt.sign_minus(), sign == Some(Sign::Minus));
assert_eq!(fmt.sign_plus(), sign == Some(Sign::Plus));
assert_eq!(fmt.alternate(), alternate);
assert_eq!(fmt.sign_aware_zero_pad(), sign_aware_zero_pad);
// The flags method is deprecated.
// This checks compatibility with older versions of Rust.
assert_eq!(fmt.flags() & 1 != 0, sign == Some(Sign::Plus));
assert_eq!(fmt.flags() & 2 != 0, sign == Some(Sign::Minus));
assert_eq!(fmt.flags() & 4 != 0, alternate);
assert_eq!(fmt.flags() & 8 != 0, sign_aware_zero_pad);
assert_eq!(fmt.flags() & 16 != 0, debug_as_hex == Some(DebugAsHex::Lower));
assert_eq!(fmt.flags() & 32 != 0, debug_as_hex == Some(DebugAsHex::Upper));
assert_eq!(fmt.flags() & 0xFFFF_FFC0, 0);
}
}
}