Created
March 3, 2019 14:22
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Calculate if there are any intermittent test failures
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def intermittent_failures( | |
%{id: suite_id}, | |
spec \\ %{10 => 100, 9 => 80, 8 => 60, 7 => 45, 6 => 32, 5 => 25, 4 => 16, 3 => 9} | |
) do | |
limit = spec |> Map.values() |> Enum.max() | |
last_100_runs = | |
from(r in Run, | |
where: r.suite_id == ^suite_id, | |
order_by: [desc: r.inserted_at], | |
limit: ^limit, | |
select: r.id | |
) | |
subquery = | |
from(t in Test, | |
join: r in subquery(last_100_runs), | |
on: t.run_id == r.id, | |
select: %{ | |
name: t.name, | |
row_number: over(row_number(), partition_by: t.name, order_by: [desc: t.inserted_at]), | |
cumulative_failures: | |
over( | |
sum(fragment("CASE WHEN t0.state = 'failed' THEN 1 ELSE 0 END")), | |
partition_by: t.name, | |
order_by: [desc: t.inserted_at] | |
) | |
} | |
) | |
starting_query = | |
from(q in subquery(subquery), | |
select: {q.name, min(q.cumulative_failures), min(q.row_number)}, | |
group_by: q.name, | |
order_by: min(q.row_number) | |
) | |
spec | |
|> Enum.reduce(starting_query, fn {failures, row_number}, query -> | |
from(q in query, | |
or_where: q.cumulative_failures == ^failures and q.row_number == ^row_number | |
) | |
end) | |
|> Repo.all() | |
end |
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