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Add test coverage for revectorize's multiple-:auto guard #1820

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Merged
polvalente merged 1 commit into from
Aug 17, 2026
Merged

Add test coverage for revectorize's multiple-:auto guard #1820

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21 changes: 21 additions & 0 deletions nx/test/nx/vectorize_test.exs
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Original file line number Diff line number Diff line change
Expand Up @@ -824,4 +824,25 @@ defmodule Nx.VectorizeTest do
assert result == Nx.vectorize(expected, a: 2, b: 3)
end
end

describe "revectorize" do
test "raises ArgumentError for more than one :auto across target_axes and :target_shape" do
t = Nx.iota({24}) |> Nx.vectorize(:x)

message =
"cannot have more than one `:auto` occurrence between target_axes and the :target_shape option"

assert_raise ArgumentError, message, fn ->
Nx.revectorize(t, a: :auto, b: :auto)
end

assert_raise ArgumentError, message, fn ->
Nx.revectorize(t, [a: :auto], target_shape: {:auto, 2})
end

assert_raise ArgumentError, message, fn ->
Nx.revectorize(t, [a: 2], target_shape: {:auto, :auto})
end
end
end
end
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