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2c5c879037
This change adds a class that both `Build` and `Session` are instances of:
class MonadBuild m where
build :: Build a -> m a
All stateful ops (generated and manually written) now have a signature that returns
an instance of `MonadBuild` (rather than just `Build`). For example:
assign_ :: (MonadBuild m, TensorType t)
=> Tensor Ref t -> Tensor v t -> m (Tensor Ref t)
This lets us remove a bunch of spurious calls to `build` in user code. It also
lets us replace the pattern `buildAnd run foo` with the simpler pattern `foo >>= run`
(or `run =<< foo`, which is sometimes nicer when foo is a complicated expression).
I went ahead and deleted `buildAnd` altogether since it seems to lead to
confusion; in particular a few tests had `buildAnd run . pure` which is
actually equivalent to just `run`.
49 lines
1.7 KiB
Haskell
49 lines
1.7 KiB
Haskell
-- Copyright 2016 TensorFlow authors.
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--
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-- Licensed under the Apache License, Version 2.0 (the "License");
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-- you may not use this file except in compliance with the License.
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-- You may obtain a copy of the License at
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--
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-- http://www.apache.org/licenses/LICENSE-2.0
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--
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-- Unless required by applicable law or agreed to in writing, software
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-- distributed under the License is distributed on an "AS IS" BASIS,
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-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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-- See the License for the specific language governing permissions and
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-- limitations under the License.
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{-# LANGUAGE OverloadedStrings #-}
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-- | Testing tracing.
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module Main where
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import Control.Concurrent.MVar (newEmptyMVar, putMVar, tryReadMVar)
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import Data.ByteString.Builder (toLazyByteString)
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import Data.ByteString.Lazy (isPrefixOf)
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import Data.Default (def)
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import Lens.Family2 ((&), (.~))
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import Test.Framework (defaultMain)
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import Test.Framework.Providers.HUnit (testCase)
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import Test.HUnit (assertBool, assertFailure)
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import qualified TensorFlow.Core as TF
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import qualified TensorFlow.Ops as TF
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testTracing :: IO ()
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testTracing = do
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-- Verifies that tracing happens as a side-effect of graph extension.
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loggedValue <- newEmptyMVar
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TF.runSessionWithOptions
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(def & TF.sessionTracer .~ putMVar loggedValue)
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(TF.run_ (TF.scalar (0 :: Float)))
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tryReadMVar loggedValue >>=
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maybe (assertFailure "Logging never happened") expectedFormat
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where expectedFormat x =
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let got = toLazyByteString x in
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assertBool ("Unexpected log entry " ++ show got)
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("Session.extend" `isPrefixOf` got)
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main :: IO ()
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main = defaultMain
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[ testCase "Tracing" testTracing
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]
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