Audit use of unsafe in uri/scheme.rs #416
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The tests include an [u8] that is invalid UTF-8.
The comments describe the postcondition on parse_exact() that makes the one use of "unsafe" in Scheme::try_from(&'a [u8]) sound.
This was referenced Apr 25, 2020
seanmonstar
approved these changes
May 7, 2020
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Added simple test for creating a Scheme directly (with both valid and invalid input) then added comments explaining the postcondition that ensures the one use of "unsafe" is sound.
This is part of #412.