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Tests: add a workaround for type deduction #1114
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```
/SourceCache/tensorflow-swift-apis/Tests/TensorFlowTests/TensorAutoDiffTests.swift:616:17: error: cannot convert value of type 'Tensor<Float>.TangentVector' (aka 'Tensor<Float>') to expected argument type 'Tensor<Double>'
assertEqual(gradient(at: [-1, 0, 1], in: f), [0.1966119, 0.25, 0.1966119], accuracy: 0.0001)
^
```
For some reason the gradient is being deduced as `Tensor<Double>` which
does not match the expectation of a `Tensor<Float>`. Provide an
explicit conversion to workaround the issue.
texasmichelle
approved these changes
Oct 29, 2020
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For some reason the gradient is being deduced as
Tensor<Double>whichdoes not match the expectation of a
Tensor<Float>. Provide anexplicit conversion to workaround the issue.