pre-allocate the buffer, including a correctness test

hfiguiere / leftpad-rs

leftpad, in rust.

BSD 2-Clause "Simplified" License

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pre-allocate the buffer, including a correctness test #6

Open ConnyOnny opened 7 years ago

ConnyOnny commented 7 years ago

The buffer size is calculated correctly, even for a complicated unicode padchar. I also added a test for that (the debug_assert_eq will be used when the tests are run but not if the library is used in release mode). The added code has comments.