mirror of
https://github.com/tensorflow/haskell.git
synced 2024-11-05 02:29:41 +01:00
e35211d49b
* Fix initialized variables for tensorflow 1.7 This is needed to support tensorflow 1.7. The trick of initializing a variable with `Shape []` and then overriding the shape by assigning an initial value no longer works. It seems that we need to explicitly flip the unknown_rank bit in the shape proto. I thought about switching opgen to use `Maybe Shape` when an op requires a shape attribute, but that will cause a lot of api churn, so I chose to hold off for now and just do a spot fix to unblock 1.7.
99 lines
3.2 KiB
Haskell
99 lines
3.2 KiB
Haskell
{-# LANGUAGE OverloadedLists #-}
|
|
module Main (main) where
|
|
|
|
import Data.Int (Int32)
|
|
import Data.Maybe (isJust)
|
|
import Control.Monad (when)
|
|
import Control.Monad.IO.Class (liftIO)
|
|
import qualified Data.Vector.Storable as V
|
|
import TensorFlow.Core
|
|
( unScalar
|
|
, render
|
|
, run_
|
|
, runSession
|
|
, run
|
|
, withControlDependencies)
|
|
import qualified TensorFlow.Ops as Ops
|
|
import TensorFlow.Variable
|
|
( Variable
|
|
, readValue
|
|
, initializedValue
|
|
, initializedVariable
|
|
, assign
|
|
, assignAdd
|
|
, variable
|
|
)
|
|
import Test.Framework (defaultMain, Test)
|
|
import Test.Framework.Providers.HUnit (testCase)
|
|
import Test.HUnit ((@=?), assertFailure)
|
|
|
|
main :: IO ()
|
|
main = defaultMain
|
|
[ testInitializedVariable
|
|
, testInitializedVariableShape
|
|
, testInitializedValue
|
|
, testDependency
|
|
, testRereadRef
|
|
, testAssignAdd
|
|
]
|
|
|
|
testInitializedVariable :: Test
|
|
testInitializedVariable =
|
|
testCase "testInitializedVariable" $ runSession $ do
|
|
(formula, reset) <- do
|
|
v <- initializedVariable 42
|
|
r <- assign v 24
|
|
return (1 + readValue v, r)
|
|
result <- run formula
|
|
liftIO $ 43 @=? (unScalar result :: Float)
|
|
run_ reset -- Updates v to a different value
|
|
rerunResult <- run formula
|
|
liftIO $ 25 @=? (unScalar rerunResult :: Float)
|
|
|
|
testInitializedVariableShape :: Test
|
|
testInitializedVariableShape =
|
|
testCase "testInitializedVariableShape" $ runSession $ do
|
|
vector <- initializedVariable (Ops.constant [1] [42 :: Float])
|
|
result <- run (readValue vector)
|
|
liftIO $ [42] @=? (result :: V.Vector Float)
|
|
s <- run (Ops.shape (readValue vector))
|
|
liftIO $ [1] @=? (s :: V.Vector Int32)
|
|
|
|
testInitializedValue :: Test
|
|
testInitializedValue =
|
|
testCase "testInitializedValue" $ runSession $ do
|
|
initialized <- initializedVariable (Ops.constant [1] [42 :: Float])
|
|
result <- run (initializedValue initialized)
|
|
liftIO $ Just [42] @=? (result :: Maybe (V.Vector Float))
|
|
|
|
uninitialized <- variable [1]
|
|
-- Can't use @=? because there is no Show instance for Tensor.
|
|
when (isJust (initializedValue (uninitialized :: Variable Float))) $
|
|
liftIO $ assertFailure "initializedValue should be Nothing, got Just"
|
|
|
|
testDependency :: Test
|
|
testDependency =
|
|
testCase "testDependency" $ runSession $ do
|
|
v <- variable []
|
|
a <- assign v 24
|
|
r <- withControlDependencies a $ render (readValue v + 18)
|
|
result <- run r
|
|
liftIO $ (42 :: Float) @=? unScalar result
|
|
|
|
-- | See https://github.com/tensorflow/haskell/issues/92.
|
|
-- Even though we're not explicitly evaluating `f0` until the end,
|
|
-- it should hold the earlier value of the variable.
|
|
testRereadRef :: Test
|
|
testRereadRef = testCase "testReRunAssign" $ runSession $ do
|
|
w <- initializedVariable 0
|
|
f0 <- run (readValue w)
|
|
run_ =<< assign w (Ops.scalar (0.1 :: Float))
|
|
f1 <- run (readValue w)
|
|
liftIO $ (0.0, 0.1) @=? (unScalar f0, unScalar f1)
|
|
|
|
testAssignAdd :: Test
|
|
testAssignAdd = testCase "testAssignAdd" $ runSession $ do
|
|
w <- initializedVariable 42
|
|
run_ =<< assignAdd w 17
|
|
f1 <- run (readValue w)
|
|
liftIO $ (42 + 17 :: Float) @=? unScalar f1
|