When generating assert the right side should be the "correct" side.

I have this testcase:
```rs
#[test_case(false => true; "Should invert")]
fn foo(statement: bool) -> bool {
statement
}

```
And the error I get is this:
```
left: `true`,
right: `false`,
```
It would be nice if when I read "right" it would be the corrent (right) expression.