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Diffstat (limited to '')
-rw-r--r-- | third_party/rust/bitflags/src/tests/from_name.rs | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/third_party/rust/bitflags/src/tests/from_name.rs b/third_party/rust/bitflags/src/tests/from_name.rs new file mode 100644 index 0000000000..1d9a4e48b6 --- /dev/null +++ b/third_party/rust/bitflags/src/tests/from_name.rs @@ -0,0 +1,42 @@ +use super::*; + +use crate::Flags; + +#[test] +fn cases() { + case(Some(1), "A", TestFlags::from_name); + case(Some(1 << 1), "B", TestFlags::from_name); + case(Some(1 | 1 << 1 | 1 << 2), "ABC", TestFlags::from_name); + + case(None, "", TestFlags::from_name); + case(None, "a", TestFlags::from_name); + case(None, "0x1", TestFlags::from_name); + case(None, "A | B", TestFlags::from_name); + + case(Some(0), "ZERO", TestZero::from_name); + + case(Some(2), "二", TestUnicode::from_name); + + case(None, "_", TestExternal::from_name); + + case(None, "", TestExternal::from_name); +} + +#[track_caller] +fn case<T: Flags>(expected: Option<T::Bits>, input: &str, inherent: impl FnOnce(&str) -> Option<T>) +where + <T as Flags>::Bits: std::fmt::Debug + PartialEq, +{ + assert_eq!( + expected, + inherent(input).map(|f| f.bits()), + "T::from_name({:?})", + input + ); + assert_eq!( + expected, + T::from_name(input).map(|f| f.bits()), + "Flags::from_name({:?})", + input + ); +} |