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Diffstat (limited to '')
-rw-r--r-- | src/tools/clippy/tests/ui/assertions_on_result_states.rs | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/assertions_on_result_states.rs b/src/tools/clippy/tests/ui/assertions_on_result_states.rs new file mode 100644 index 000000000..4c5af81ef --- /dev/null +++ b/src/tools/clippy/tests/ui/assertions_on_result_states.rs @@ -0,0 +1,69 @@ +// run-rustfix +#![warn(clippy::assertions_on_result_states)] + +use std::result::Result; + +struct Foo; + +#[derive(Debug)] +struct DebugFoo; + +#[derive(Copy, Clone, Debug)] +struct CopyFoo; + +macro_rules! get_ok_macro { + () => { + Ok::<_, DebugFoo>(Foo) + }; +} + +fn main() { + // test ok + let r: Result<Foo, DebugFoo> = Ok(Foo); + debug_assert!(r.is_ok()); + assert!(r.is_ok()); + + // test ok with non-debug error type + let r: Result<Foo, Foo> = Ok(Foo); + assert!(r.is_ok()); + + // test temporary ok + fn get_ok() -> Result<Foo, DebugFoo> { + Ok(Foo) + } + assert!(get_ok().is_ok()); + + // test macro ok + assert!(get_ok_macro!().is_ok()); + + // test ok that shouldn't be moved + let r: Result<CopyFoo, DebugFoo> = Ok(CopyFoo); + fn test_ref_unmoveable_ok(r: &Result<CopyFoo, DebugFoo>) { + assert!(r.is_ok()); + } + test_ref_unmoveable_ok(&r); + assert!(r.is_ok()); + r.unwrap(); + + // test ok that is copied + let r: Result<CopyFoo, CopyFoo> = Ok(CopyFoo); + assert!(r.is_ok()); + r.unwrap(); + + // test reference to ok + let r: Result<CopyFoo, CopyFoo> = Ok(CopyFoo); + fn test_ref_copy_ok(r: &Result<CopyFoo, CopyFoo>) { + assert!(r.is_ok()); + } + test_ref_copy_ok(&r); + r.unwrap(); + + // test err + let r: Result<DebugFoo, Foo> = Err(Foo); + debug_assert!(r.is_err()); + assert!(r.is_err()); + + // test err with non-debug value type + let r: Result<Foo, Foo> = Err(Foo); + assert!(r.is_err()); +} |