Adds PbjReaderWriterTest (~1,560 lines) covering PbjReader (#907) and PbjWriter (#909): buffer behavior, growth, varint/zigzag/string round trips, UTF-8/surrogate edge cases, and I/O failure propagation.
Benefit: test coverage gate before any production code switches over to PbjReader/PbjWriter.
PR: #910
Adds
PbjReaderWriterTest(~1,560 lines) covering PbjReader (#907) and PbjWriter (#909): buffer behavior, growth, varint/zigzag/string round trips, UTF-8/surrogate edge cases, and I/O failure propagation.Benefit: test coverage gate before any production code switches over to PbjReader/PbjWriter.
PR: #910