Normalize asserts

[tschuett]

What it does

Improves readability

Categories (optional)

• Kind: See https://github.com/rust-lang/rust-clippy/blob/master/README.md#clippy for list of lint kinds

What is the advantage of the recommended code over the original code

For example:

• Remove bounce checking inserted by ...
• Remove the need to duplicating/storing/typo ...

Drawbacks

None.

Example

assert!(result.len() == self.data.len());
assert!(result.len() != self.data.len());

Could be written as:

assert_eq!(result.len(), self.data.len());
assert_ne!(result.len(), self.data.len());

[alex-700]

Duplicate of #6637

[giraffate]

Thanks for your suggestion!

But I'm closing this because it seems to be a duplicate of #6637.