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Add tests for float in array comparison

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briankabiro 2019-09-19 15:57:43 +03:00 committed by Marcin Serwin
parent d4409350dc
commit 0d00eafd32
2 changed files with 34 additions and 1 deletions
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7
tests/ui/float_cmp.rs
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@ -77,6 +77,13 @@ fn main() {
assert_eq!(a, b); // no errors
let a1: [f32; 1] = [0.0];
let a2: [f32; 1] = [1.1];
assert_eq!(a1[0], a2[0]);
assert_eq!(&a1[0], &a2[0]);
// no errors - comparing signums is ok
let x32 = 3.21f32;
1.23f32.signum() == x32.signum();

28
tests/ui/float_cmp.stderr
View file

@ -35,5 +35,31 @@ note: `f32::EPSILON` and `f64::EPSILON` are available.
LL | twice(x) != twice(ONE as f64);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: aborting due to 3 previous errors
error: strict comparison of f32 or f64
--> $DIR/float_cmp.rs:83:5
|
LL | assert_eq!(a1[0], a2[0]);
| ^^^^^^^^^^^^^^^^^^^^^^^^^
|
note: std::f32::EPSILON and std::f64::EPSILON are available.
--> $DIR/float_cmp.rs:83:5
|
LL | assert_eq!(a1[0], a2[0]);
| ^^^^^^^^^^^^^^^^^^^^^^^^^
= note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
error: strict comparison of f32 or f64
--> $DIR/float_cmp.rs:85:5
|
LL | assert_eq!(&a1[0], &a2[0]);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
note: std::f32::EPSILON and std::f64::EPSILON are available.
--> $DIR/float_cmp.rs:85:5
|
LL | assert_eq!(&a1[0], &a2[0]);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
= note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
error: aborting due to 5 previous errors