Package com.exonum.binding.service
Class NodeFake
- java.lang.Object
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- com.exonum.binding.service.NodeFake
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- All Implemented Interfaces:
Node
public final class NodeFake extends java.lang.Object implements Node
An implementation of a Node interface for testing purposes. Use it in tests of your handlers that need some data in the database:try (MemoryDb db = MemoryDb.newInstance(); Cleaner cleaner = new Cleaner()) { // Setup database to include some test data Fork fork = db.createFork(cleaner); MapIndex balance = MapIndexProxy.newInstance("balance", fork, stringSerializer, stringSerializer); balance.put("John Doe", "$1000.00"); db.merge(fork); // Create a node fake from the database NodeFake node = new NodeFake(db); WalletController controller = new WalletController(node); assertThat(controller.getBalance("John Doe"), equalTo("$1000.00")); }
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description MemoryDb
getDatabase()
Returns the underlying database.com.exonum.binding.common.crypto.PublicKey
getPublicKey()
Returns the service public key of this node.com.exonum.binding.common.hash.HashCode
submitTransaction(RawTransaction transaction)
Returns a zero hash always, ignoring the transaction.<ResultT> ResultT
withSnapshot(java.util.function.Function<Snapshot,ResultT> snapshotFunction)
Performs a given function with a snapshot of the current database state.
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Constructor Detail
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NodeFake
public NodeFake(MemoryDb database)
Creates a new node fake with the given database and an empty public key.- Parameters:
database
- a database to provide snapshots of
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NodeFake
public NodeFake(MemoryDb database, com.exonum.binding.common.crypto.PublicKey publicKey)
Creates a new node fake with the given database.- Parameters:
database
- a database to provide snapshots ofpublicKey
- a public key of the node
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Method Detail
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submitTransaction
public com.exonum.binding.common.hash.HashCode submitTransaction(RawTransaction transaction)
Returns a zero hash always, ignoring the transaction.- Specified by:
submitTransaction
in interfaceNode
- Parameters:
transaction
- a transaction to send- Returns:
- hash of the transaction message created by the framework
- Throws:
java.lang.NullPointerException
- if the transaction is null- See Also:
Blockchain.getTxMessages()
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withSnapshot
public <ResultT> ResultT withSnapshot(java.util.function.Function<Snapshot,ResultT> snapshotFunction)
Description copied from interface:Node
Performs a given function with a snapshot of the current database state.- Specified by:
withSnapshot
in interfaceNode
- Type Parameters:
ResultT
- a type the function returns- Parameters:
snapshotFunction
- a function to execute- Returns:
- the result of applying the given function to the database state
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getPublicKey
public com.exonum.binding.common.crypto.PublicKey getPublicKey()
Description copied from interface:Node
Returns the service public key of this node. The corresponding private key is used for signing transactions inNode.submitTransaction(RawTransaction)
.This key is stored under "service_public_key" key in the node configuration file.
- Specified by:
getPublicKey
in interfaceNode
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getDatabase
public MemoryDb getDatabase()
Returns the underlying database.
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