281 lines
14 KiB
Haskell
281 lines
14 KiB
Haskell
{-
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Tock: a compiler for parallel languages
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Copyright (C) 2007 University of Kent
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation, either version 2 of the License, or (at your
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option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program. If not, see <http://www.gnu.org/licenses/>.
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-}
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module UsageCheckTest (tests) where
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import Control.Monad.Error
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import Control.Monad.Reader
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import Data.Graph.Inductive
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import qualified Data.Map as Map
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import qualified Data.Set as Set
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import Prelude hiding (fail)
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import Test.HUnit
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import qualified AST as A
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import Check
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import CompState
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import Errors
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import FlowGraph
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import Metadata
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import TestUtils hiding (Var)
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import UsageCheckAlgorithms
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import UsageCheckUtils
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import Utils
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--Shorthands for some variables to simplify the list of tests in this file
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vA, vB, vC, vD :: A.Variable
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vA = variable "a"
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vB = A.DerefVariable emptyMeta $ variable "b"
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vC = A.DirectedVariable emptyMeta A.DirInput $ variable "c"
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vD = variable "d"
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l0 :: A.Expression
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l0 = intLiteral 0
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tvA, tvB, tvC, tvD :: Var
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tvA = Var $ vA
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tvB = Var $ vB
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tvC = Var $ vC
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tvD = Var $ vD
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m :: Meta
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m = emptyMeta
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--These are all shorthand for some useful "building block" processes
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--The syntax is roughly: <variable list>_eq_<variable list>
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--where a variable may be <letter> or <letter'subscript>
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a_eq_0, a_eq_b, ab_eq_cd, ab_eq_ba, ab_eq_b0, a_eq_c_plus_d, a_eq_not_b :: A.Process
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a_eq_0 = A.Assign m [vA] $ A.ExpressionList m [l0]
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a_eq_b = A.Assign emptyMeta [vA] $ A.ExpressionList emptyMeta [A.ExprVariable emptyMeta vB]
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ab_eq_cd = A.Assign m [vA,vB] $ A.ExpressionList m [A.ExprVariable m vC,A.ExprVariable m vD]
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ab_eq_ba = A.Assign m [vA,vB] $ A.ExpressionList m [A.ExprVariable m vA,A.ExprVariable m vB]
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ab_eq_b0 = A.Assign m [vA,vB] $ A.ExpressionList m [A.ExprVariable m vB,l0]
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a_eq_c_plus_d = A.Assign m [vA] $ A.ExpressionList m [A.Dyadic m A.Plus (A.ExprVariable m vC) (A.ExprVariable m vD)]
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a_eq_not_b = A.Assign m [vA] $ A.ExpressionList m [A.Monadic m A.MonadicNot (A.ExprVariable m vB)]
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testGetVarProc :: Test
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testGetVarProc = TestList (map doTest tests)
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where
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tests :: [(Int,[Var],[Var],[Var],A.Process)]
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tests =
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[
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--TODO test channel reads and writes (incl. reads in alts)
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--TODO test process calls
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--Test assignments on non-sub variables:
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(0,[],[tvA],[],a_eq_0)
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,(1,[tvB],[tvA],[],a_eq_b)
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,(2,[tvC,tvD],[tvA,tvB],[],ab_eq_cd)
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,(3,[tvA,tvB],[tvA,tvB],[],ab_eq_ba)
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,(4,[tvB],[tvA,tvB],[],ab_eq_b0)
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--Test assignments and expressions:
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,(200,[tvB],[tvA],[],a_eq_not_b)
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,(201,[tvC,tvD],[tvA],[],a_eq_c_plus_d)
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-- Test simple outputs:
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,(400,[tvA],[],[tvC],A.Output emptyMeta vC [A.OutExpression emptyMeta $ A.ExprVariable emptyMeta vA])
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,(401,[tvA,tvB],[],[tvC],A.Output emptyMeta vC $ map ((A.OutExpression emptyMeta) . (A.ExprVariable emptyMeta)) [vA,vB])
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,(402,[tvA,tvB],[],[tvC],A.Output emptyMeta vC
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[A.OutCounted emptyMeta (A.ExprVariable emptyMeta vA) (A.ExprVariable emptyMeta vB)])
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-- Test simple inputs:
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,(500,[],[tvB],[tvC],A.Input emptyMeta vC (A.InputSimple emptyMeta [A.InVariable emptyMeta vB]))
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,(501,[],[tvA,tvB],[tvC],A.Input emptyMeta vC
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(A.InputSimple emptyMeta [A.InVariable emptyMeta vB,A.InVariable emptyMeta vA]))
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,(502,[],[tvA,tvB],[tvC],A.Input emptyMeta vC
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(A.InputSimple emptyMeta [A.InCounted emptyMeta vA vB]))
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]
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doTest :: (Int,[Var],[Var],[Var],A.Process) -> Test
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doTest (index,r,w,u,proc) = TestCase $ assertEqual ("testGetVarProc-" ++ (show index)) (vars r w u) (getVarProc proc)
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--TODO test declarations being recorded, when I've decided how to record them
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type TestM = ReaderT CompState (Either String)
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instance Die TestM where
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dieReport (_,s) = throwError s
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instance Warn TestM where
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warnReport (_,s) = throwError s
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buildTestFlowGraph :: [(Int, [Var], [Var])] -> [(Int, Int, EdgeLabel)] -> Int -> Int -> String -> FlowGraph TestM UsageLabel
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buildTestFlowGraph ns es start end v
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= mkGraph
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([(-1,makeTestNode emptyMeta $ Usage Nothing (Just $ ScopeIn False v) emptyVars),(-2,makeTestNode emptyMeta $ Usage Nothing (Just $ ScopeOut v) emptyVars)] ++ (map transNode ns))
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([(-1,start,ESeq),(end,-2,ESeq)] ++ es)
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where
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transNode :: (Int, [Var], [Var]) -> (Int, FNode TestM UsageLabel)
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transNode (n,r,w) = (n,makeTestNode emptyMeta (Usage Nothing Nothing $ vars r w []))
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testInitVar :: Test
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testInitVar = TestList
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[
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-- Single node, x not touched
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testInitVarPass 0 [(0,[],[])] [] 0 0 "x"
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-- Single node, x written to
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,testInitVarPass 1 [(0,[],[variable "x"])] [] 0 0 "x"
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-- Single node, x read from (FAIL)
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,testInitVarFail 2 [(0,[variable "x"],[])] [] 0 0 "x"
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-- Single node, x read from and written to (FAIL - x must be written to before the read.
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-- This line is akin to x = x + 1, so x must be written to beforehand)
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,testInitVarFail 3 [(0,[variable "x"],[variable "x"])] [] 0 0 "x"
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-- Two nodes, x written to then read
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,testInitVarPass 10 [(0,[],[variable "x"]), (1,[variable "x"],[])] [(0,1,ESeq)] 0 1 "x"
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-- Two nodes, x read then written to (FAIL)
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,testInitVarFail 11 [(0,[],[variable "x"]), (1,[variable "x"],[])] [(1,0,ESeq)] 1 0 "x"
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-- As test 10 (x written to then read) but using the par edges.
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,testInitVarPass 13 [(0,[],[variable "x"]), (1,[variable "x"],[])] [(0,1,EStartPar 0)] 0 1 "x"
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,testInitVarPass 14 [(0,[],[variable "x"]), (1,[variable "x"],[])] [(0,1,EEndPar 0)] 0 1 "x"
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-- Diamond tests (0 branches to 1 and 2, which both merge to 3):
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-- x written to in 0 and 1, then read in 3
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,testInitVarPass 20 [(0,[],[]),(1,[],[variable "x"]), (2,[],[variable "x"]), (3,[variable "x"],[])]
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[(0,1,ESeq),(0,2,ESeq),(1,3,ESeq),(2,3,ESeq)] 0 3 "x"
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-- x written to only in 2 then read in 3 (FAIL)
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,testInitVarFail 21 [(0,[],[]),(1,[],[]), (2,[],[variable "x"]), (3,[variable "x"],[])]
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[(0,1,ESeq),(0,2,ESeq),(1,3,ESeq),(2,3,ESeq)] 0 3 "x"
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-- x definitely written to in 2, but not 1 (FAIL)
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,testInitVarFail 22 [(0,[],[]),(1,[],[]), (2,[],[variable "x"]), (3,[variable "x"],[])]
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[(0,1,ESeq),(0,2,ESeq),(1,3,ESeq),(2,3,ESeq)] 0 3 "x"
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-- like test 21, but the link missing from 1 to 3, so test will pass
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,testInitVarPass 23 [(0,[],[]),(1,[],[]), (2,[],[variable "x"]), (3,[variable "x"],[])]
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[(0,1,ESeq),(0,2,ESeq),(2,3,ESeq)] 0 3 "x"
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-- variable written to in 0, read in 3
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,testInitVarPass 24 [(0,[],[variable "x"]),(1,[],[]), (2,[],[]), (3,[variable "x"],[])]
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[(0,1,ESeq),(0,2,ESeq),(1,3,ESeq),(2,3,ESeq)] 0 3 "x"
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-- variable never written to, but read in 3
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,testInitVarFail 25 [(0,[],[]),(1,[],[]), (2,[],[]), (3,[variable "x"],[])]
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[(0,1,ESeq),(0,2,ESeq),(1,3,ESeq),(2,3,ESeq)] 0 3 "x"
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-- variable written to in 2 and 3, but read in 1 (FAIL):
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,testInitVarFail 26 [(0,[],[]),(1,[variable "x"],[]), (2,[],[variable "x"]), (3,[],[variable "x"])]
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[(0,1,ESeq),(0,2,ESeq),(1,3,ESeq),(2,3,ESeq)] 0 3 "x"
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-- Test parallel diamonds:
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-- written to in 1 and 2, read in 3
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-- This would fail CREW, but that's not what we're testing here:
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,testInitVarPass 30 [(0,[],[]),(1,[],[variable "x"]), (2,[],[variable "x"]), (3,[variable "x"],[])]
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[(0,1,EStartPar 0),(0,2,EStartPar 0),(1,3,EEndPar 0),(2,3,EEndPar 0)] 0 3 "x"
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-- written to in 1, read in 3
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,testInitVarPass 31 [(0,[],[]),(1,[],[variable "x"]), (2,[],[]), (3,[variable "x"],[])]
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[(0,1,EStartPar 0),(0,2,EStartPar 0),(1,3,EEndPar 0),(2,3,EEndPar 0)] 0 3 "x"
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-- written to in 0, read in 3
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,testInitVarPass 32 [(0,[],[variable "x"]),(1,[],[]), (2,[],[]), (3,[variable "x"],[])]
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[(0,1,EStartPar 0),(0,2,EStartPar 0),(1,3,EEndPar 0),(2,3,EEndPar 0)] 0 3 "x"
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-- never written to, but read in 3:
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,testInitVarFail 33 [(0,[],[]),(1,[],[]), (2,[],[]), (3,[variable "x"],[])]
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[(0,1,EStartPar 0),(0,2,EStartPar 0),(1,3,EEndPar 0),(2,3,EEndPar 0)] 0 3 "x"
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-- written to in 1, read in 2 (again, would fail CREW) (FAIL):
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,testInitVarFail 34 [(0,[],[]),(1,[],[variable "x"]), (2,[variable "x"],[]), (3,[],[])]
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[(0,1,EStartPar 0),(0,2,EStartPar 0),(1,3,EEndPar 0),(2,3,EEndPar 0)] 0 3 "x"
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-- written to in 1, read in 2 and 3 (again, would fail CREW) (FAIL):
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,testInitVarFail 35 [(0,[],[]),(1,[],[variable "x"]), (2,[variable "x"],[]), (3,[variable "x"],[])]
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[(0,1,EStartPar 0),(0,2,EStartPar 0),(1,3,EEndPar 0),(2,3,EEndPar 0)] 0 3 "x"
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-- Test loops (0 -> 1, 1 -> 2 -> 3 -> 1, 1 -> 4)
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-- Loop, nothing happens:
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,testInitVarPass 100 [(0,[],[]),(1,[],[]),(2,[],[]),(3,[],[]),(4,[],[])]
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[(0,1,ESeq), (1,2,ESeq), (2,3,ESeq), (3,1,ESeq), (1,4,ESeq)] 0 4 "x"
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-- Loop, written to before the loop, read afterwards:
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,testInitVarPass 101 [(0,[],[variable "x"]),(1,[],[]),(2,[],[]),(3,[],[]),(4,[variable "x"],[])]
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[(0,1,ESeq), (1,2,ESeq), (2,3,ESeq), (3,1,ESeq), (1,4,ESeq)] 0 4 "x"
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-- Loop, written to before the loop, read during the loop
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,testInitVarPass 102 [(0,[],[variable "x"]),(1,[],[]),(2,[],[]),(3,[variable "x"],[]),(4,[],[])]
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[(0,1,ESeq), (1,2,ESeq), (2,3,ESeq), (3,1,ESeq), (1,4,ESeq)] 0 4 "x"
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-- Loop, written to during the loop, read afterwards (FAIL - loop might not be executed)
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,testInitVarFail 103 [(0,[],[]),(1,[],[]),(2,[],[variable "x"]),(3,[],[]),(4,[variable "x"],[])]
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[(0,1,ESeq), (1,2,ESeq), (2,3,ESeq), (3,1,ESeq), (1,4,ESeq)] 0 4 "x"
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-- Loop, written to and then read during the loop:
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,testInitVarPass 104 [(0,[],[]),(1,[],[]),(2,[],[variable "x"]),(3,[variable "x"],[]),(4,[],[])]
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[(0,1,ESeq), (1,2,ESeq), (2,3,ESeq), (3,1,ESeq), (1,4,ESeq)] 0 4 "x"
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-- Loop, read then written to during the loop (FAIL):
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,testInitVarFail 105 [(0,[],[]),(1,[],[]),(2,[variable "x"],[]),(3,[],[variable "x"]),(4,[],[])]
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[(0,1,ESeq), (1,2,ESeq), (2,3,ESeq), (3,1,ESeq), (1,4,ESeq)] 0 4 "x"
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-- TODO work out (and test) par loops
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-- TODO test dereferenced variables
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]
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where
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testInitVarPass :: Int -> [(Int, [Var], [Var])] -> [(Int, Int, EdgeLabel)] -> Int -> Int -> String -> Test
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testInitVarPass testNum ns es start end v = TestCase $ assertEither ("testInitVar " ++ show testNum) () $ flip runReaderT emptyState $ checkInitVar emptyMeta (buildTestFlowGraph ns es start end v) (-1)
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testInitVarFail :: Int -> [(Int, [Var], [Var])] -> [(Int, Int, EdgeLabel)] -> Int -> Int -> String -> Test
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testInitVarFail testNum ns es start end v = TestCase $ assertEitherFail ("testInitVar " ++ show testNum) $ flip runReaderT emptyState $ checkInitVar emptyMeta (buildTestFlowGraph ns es start end v) (-1)
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variable = Var . A.Variable emptyMeta . simpleName
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testReachDef :: Test
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testReachDef = TestList
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[
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-- Nothing written/read, blank results:
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test 0 [(0,[],[])] [] []
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-- Written but not read, no results:
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,test 1 [(0,[],[variable "x"])] [] []
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-- Written then read, no branching
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,test 2 [(0,[],[variable "x"]),(1,[variable "x"],[])] [(0,1,ESeq)] [(1,[0])]
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,test 3 [(0,[],[variable "x"]),(1,[],[]),(2,[variable "x"],[])] [(0,1,ESeq),(1,2,ESeq)] [(2,[0])]
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,test 4 [(0,[],[variable "x"]),(1,[],[variable "x"]),(2,[variable "x"],[])] [(0,1,ESeq),(1,2,ESeq)] [(2,[1])]
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-- Lattice, written in 0, read in 3:
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,test 100 [(0,[],[variable "x"]),(1,[],[]),(2,[],[]),(3,[variable "x"],[])] latEdges [(3,[0])]
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-- Lattice, written in 0, read in 1,2 and 3:
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,test 101 [(0,[],[variable "x"]),(1,[variable "x"],[]),(2,[variable "x"],[]),(3,[variable "x"],[])] latEdges [(3,[0]),(1,[0]),(2,[0])]
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-- Lattice, written 0, 1 and 2, read in 3:
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,test 102 [(0,[],[variable "x"]),(1,[],[variable "x"]),(2,[],[variable "x"]),(3,[variable "x"],[])] latEdges [(3,[1,2])]
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-- Lattice written in 0 and 1, read in 2 and 3:
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,test 103 [(0,[],[variable "x"]),(1,[],[variable "x"]),(2,[variable "x"],[]),(3,[variable "x"],[])] latEdges [(3,[0,1]),(2,[0])]
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--Loops:
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-- Written before loop, read afterwards:
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,test 200 [(0,[],[variable "x"]),(1,[],[]),(2,[],[]),(3,[],[]),(4,[variable "x"],[])] loopEdges [(4,[0])]
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-- Written before loop, read during:
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,test 201 [(0,[],[variable "x"]),(1,[],[]),(2,[variable "x"],[]),(3,[],[]),(4,[],[])] loopEdges [(2,[0])]
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-- Written before loop, written then read during:
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,test 202 [(0,[],[variable "x"]),(1,[],[]),(2,[],[variable "x"]),(3,[variable "x"],[]),(4,[],[])] loopEdges [(3,[2])]
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-- Written before loop, written then read during, and read after:
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,test 203 [(0,[],[variable "x"]),(1,[],[]),(2,[],[variable "x"]),(3,[variable "x"],[]),(4,[variable "x"],[])] loopEdges [(3,[2]),(4,[0,2])]
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--TODO test derefenced variables
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]
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where
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latEdges :: [(Int,Int,EdgeLabel)]
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latEdges = [(0,1,ESeq),(0,2,ESeq),(1,3,ESeq),(2,3,ESeq)]
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loopEdges :: [(Int,Int,EdgeLabel)]
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loopEdges = [(0,1,ESeq),(1,2,ESeq),(2,3,ESeq),(3,1,ESeq),(1,4,ESeq)]
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-- It is implied that 0 is the start, and the highest node number is the end, and the var is "x"
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test :: Int -> [(Int,[A.Variable],[A.Variable])] -> [(Int,Int,EdgeLabel)] -> [(Int,[Int])] -> Test
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test testNum ns es expMap = TestCase $ assertEither ("testReachDef " ++ show testNum) (Map.fromList $ map (transformPair id ((Map.singleton $ Var $ variable "x") . Set.fromList)) expMap) $
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findReachDef (buildTestFlowGraph (map (transformTriple id (map Var) (map Var)) ns) es 0 (maximum $ map fst3 ns) "x") (-1)
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fst3 :: (a,b,c) -> a
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fst3(x,_,_) = x
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tests :: Test
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tests = TestLabel "RainUsageCheckTest" $ TestList
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[
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testGetVarProc
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,testInitVar
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,testReachDef
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]
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