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fix: handle Unmergable errors when merging struct responses #152

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merged 1 commit into from
Oct 13, 2020

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larkee
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@larkee larkee commented Oct 13, 2020

This PR fixes a bug in the StreamedResultSet logic for merging chunked values where the chunked value is an array of structs and the chunk boundary splits a struct element in two and the halves aren't correctly merged.

This bug results in the struct element incorrectly being split into two partial struct elements.

Expected:

('foo', 0.5, DatetimeWithNanoseconds(2020, 1, 1, 0, 0, tzinfo=<UTC>))

Actual:

('foo', 0.5)
('2020-01-01T00:00:00Z',)

This bug is caused by an unhandled Unmergable error in _merge_struct. This PR adds the same handling used for _merge_array and a unit test to prove the fix works.

@google-cla google-cla bot added the cla: yes This human has signed the Contributor License Agreement. label Oct 13, 2020
@larkee larkee marked this pull request as ready for review October 13, 2020 03:02
@larkee larkee requested a review from a team as a code owner October 13, 2020 03:02
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LGTM

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