Safe Haskell	Safe-Inferred
Language	Haskell2010

Test.Util.ChainUpdates

Contents

Tests

Description

Generate sequences of updates to model an evolving chain

Synopsis

data ChainUpdate
- = AddBlock TestBlock
- | SwitchFork (Point TestBlock) [TestBlock]
data UpdateBehavior
- = SelectedChainBehavior
- | TentativeChainBehavior
genChainUpdates ∷ UpdateBehavior → SecurityParam → Int → Gen [ChainUpdate]
toChainUpdates ∷ [ChainUpdate] → [ChainUpdate TestBlock TestBlock]
prop_genChainUpdates ∷ SecurityParam → Int → Property

Documentation

data ChainUpdate Source #

Constructors

AddBlock TestBlock
SwitchFork (Point TestBlock) [TestBlock]	Roll back to the given `Point`, and then immediately roll forward by the given `TestBlock`s.

Instances

Instances details

Show ChainUpdate Source #
Instance details Defined in Test.Util.ChainUpdates Methods showsPrec ∷ Int → ChainUpdate → ShowS # show ∷ ChainUpdate → String # showList ∷ [ChainUpdate] → ShowS #
Eq ChainUpdate Source #
Instance details Defined in Test.Util.ChainUpdates Methods (==) ∷ ChainUpdate → ChainUpdate → Bool # (/=) ∷ ChainUpdate → ChainUpdate → Bool #
Condense ChainUpdate Source #
Instance details Defined in Test.Util.ChainUpdates Methods condense ∷ ChainUpdate → String Source #

data UpdateBehavior Source #

Different strategies how to generate a sequence of ChainUpdates.

Constructors

SelectedChainBehavior

Chain updates tracking the selected chain of an honest node. In particular, this includes:

All blocks involved are valid.
Every ChainUpdate improves the chain.

TentativeChainBehavior

Chain updates tracking the tentative chain of an honest node (in the context of diffusion pipelining). This is similiar to SelectedChainBehavior, but allows for the following sequence of ChainUpdates:

AddBlock blk for blk invalid
SwitchFork (prevPoint blk) [blk'] where blk' is preferable to blk.

Instances

Instances details

Bounded UpdateBehavior Source #
Instance details Defined in Test.Util.ChainUpdates Methods minBound ∷ UpdateBehavior # maxBound ∷ UpdateBehavior #
Enum UpdateBehavior Source #
Instance details Defined in Test.Util.ChainUpdates Methods succ ∷ UpdateBehavior → UpdateBehavior # pred ∷ UpdateBehavior → UpdateBehavior # toEnum ∷ Int → UpdateBehavior # fromEnum ∷ UpdateBehavior → Int # enumFrom ∷ UpdateBehavior → [UpdateBehavior] # enumFromThen ∷ UpdateBehavior → UpdateBehavior → [UpdateBehavior] # enumFromTo ∷ UpdateBehavior → UpdateBehavior → [UpdateBehavior] # enumFromThenTo ∷ UpdateBehavior → UpdateBehavior → UpdateBehavior → [UpdateBehavior] #
Show UpdateBehavior Source #
Instance details Defined in Test.Util.ChainUpdates Methods showsPrec ∷ Int → UpdateBehavior → ShowS # show ∷ UpdateBehavior → String # showList ∷ [UpdateBehavior] → ShowS #
Eq UpdateBehavior Source #
Instance details Defined in Test.Util.ChainUpdates Methods (==) ∷ UpdateBehavior → UpdateBehavior → Bool # (/=) ∷ UpdateBehavior → UpdateBehavior → Bool #

genChainUpdates Source #

Arguments

∷ UpdateBehavior
→ SecurityParam
→ Int	The number of updates to generate
→ Gen [ChainUpdate]

toChainUpdates ∷ [ChainUpdate] → [ChainUpdate TestBlock TestBlock] Source #

Tests

prop_genChainUpdates ∷ SecurityParam → Int → Property Source #

Test that applying the generated updates gives us the same chain as cusCurrentChain.