Expand testing coverage for 16-bit deltas in v1 codec #998
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We had limited coverage for 16-bit deltas previously: V1Custom test only exercised delta decoding on zero deltas, and VertexDeltas test only had positive deltas which could hide an implementation error with sign bit handling. To fix this, expand decodeVertexDeltas test to have deltas flip the sign in the second half of the data, and add decodeVertexV1Deltas test which has the same data encoded statically.
This test has the same data as the correponding test from demo/tests.cpp and expands testing coverage for 16-bit delta decoding that V1_Custom test was previously lacking.
xPaw
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Dec 16, 2025
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We had limited coverage for 16-bit deltas previously: V1Custom test only
exercised delta decoding on zero deltas, and VertexDeltas test only had
positive deltas which could hide an implementation error with sign bit
handling.
To fix this, expand decodeVertexDeltas test to have deltas flip the sign
in the second half of the data, and add decodeVertexV1Deltas test which
has the same data encoded statically.
Thanks to @xPaw for noticing.