Abit/app/src/test/java/ch/dissem/bitmessage/repository/AndroidProofOfWorkRepositoryTest.kt

/*
 * Copyright 2017 Christian Basler
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package ch.dissem.bitmessage.repository

import android.os.Build.VERSION_CODES.LOLLIPOP
import ch.dissem.apps.abit.repository.AndroidAddressRepository
import ch.dissem.apps.abit.repository.AndroidMessageRepository
import ch.dissem.apps.abit.repository.AndroidProofOfWorkRepository
import ch.dissem.apps.abit.repository.SqlHelper
import ch.dissem.bitmessage.entity.BitmessageAddress
import ch.dissem.bitmessage.entity.ObjectMessage
import ch.dissem.bitmessage.entity.Plaintext
import ch.dissem.bitmessage.entity.payload.GenericPayload
import ch.dissem.bitmessage.entity.payload.GetPubkey
import ch.dissem.bitmessage.entity.payload.ObjectPayload
import ch.dissem.bitmessage.entity.payload.Pubkey
import ch.dissem.bitmessage.entity.valueobject.PrivateKey
import ch.dissem.bitmessage.ports.AddressRepository
import ch.dissem.bitmessage.ports.MessageRepository
import ch.dissem.bitmessage.ports.ProofOfWorkRepository
import ch.dissem.bitmessage.utils.Singleton.cryptography
import ch.dissem.bitmessage.utils.UnixTime
import org.hamcrest.CoreMatchers.*
import org.junit.Assert.assertThat
import org.junit.Assert.assertTrue
import org.junit.Before
import org.junit.Test
import org.junit.runner.RunWith
import org.robolectric.RobolectricTestRunner
import org.robolectric.RuntimeEnvironment
import org.robolectric.annotation.Config
import kotlin.properties.Delegates

/**
 * @author Christian Basler
 */
@RunWith(RobolectricTestRunner::class)
@Config(sdk = intArrayOf(LOLLIPOP), packageName = "ch.dissem.apps.abit")
class AndroidProofOfWorkRepositoryTest : TestBase() {
    private lateinit var repo: ProofOfWorkRepository
    private lateinit var addressRepo: AddressRepository
    private lateinit var messageRepo: MessageRepository

    private var initialHash1: ByteArray by Delegates.notNull()
    private var initialHash2: ByteArray by Delegates.notNull()

    @Before
    fun setUp() {
        RuntimeEnvironment.application.deleteDatabase(SqlHelper.DATABASE_NAME)
        val sqlHelper = SqlHelper(RuntimeEnvironment.application)

        addressRepo = AndroidAddressRepository(sqlHelper)
        messageRepo = AndroidMessageRepository(sqlHelper, RuntimeEnvironment.application)
        repo = AndroidProofOfWorkRepository(sqlHelper)
        mockedInternalContext(
            addressRepository = addressRepo,
            messageRepository = messageRepo,
            proofOfWorkRepository = repo,
            cryptography = cryptography()
        )

        repo.putObject(
            objectMessage = ObjectMessage.Builder()
                .payload(GetPubkey(BitmessageAddress("BM-2DAjcCFrqFrp88FUxExhJ9kPqHdunQmiyn")))
                .build(),
            nonceTrialsPerByte = 1000,
            extraBytes = 1000
        )
        initialHash1 = repo.getItems()[0]

        val sender = loadIdentity("BM-2cSqjfJ8xK6UUn5Rw3RpdGQ9RsDkBhWnS8")
        val recipient = loadContact()
        addressRepo.save(sender)
        addressRepo.save(recipient)
        val plaintext = Plaintext.Builder(Plaintext.Type.MSG)
            .ackData(cryptography().randomBytes(32))
            .from(sender)
            .to(recipient)
            .message("Subject", "Message")
            .status(Plaintext.Status.DOING_PROOF_OF_WORK)
            .build()
        messageRepo.save(plaintext)
        plaintext.ackMessage!!.let { ackMessage ->
            initialHash2 = cryptography().getInitialHash(ackMessage)
            repo.putObject(ProofOfWorkRepository.Item(
                objectMessage = ackMessage,
                nonceTrialsPerByte = 1000, extraBytes = 1000,
                expirationTime = UnixTime.now + 10 * UnixTime.MINUTE,
                message = plaintext
            ))
        }
    }

    @Test
    fun `ensure object is stored`() {
        val sizeBefore = repo.getItems().size
        repo.putObject(
            objectMessage = ObjectMessage.Builder()
                .payload(GetPubkey(BitmessageAddress("BM-2D9U2hv3YBMHM1zERP32anKfVKohyPN9x2")))
                .build(),
            nonceTrialsPerByte = 1000,
            extraBytes = 1000
        )
        assertThat(repo.getItems().size, `is`(sizeBefore + 1))
    }

    @Test
    fun `ensure ack objects are stored`() {
        val sizeBefore = repo.getItems().size
        val sender = loadIdentity("BM-2cSqjfJ8xK6UUn5Rw3RpdGQ9RsDkBhWnS8")
        val recipient = loadContact()
        addressRepo.save(sender)
        addressRepo.save(recipient)
        val plaintext = Plaintext.Builder(Plaintext.Type.MSG)
            .ackData(cryptography().randomBytes(32))
            .from(sender)
            .to(recipient)
            .message("Subject", "Message")
            .status(Plaintext.Status.DOING_PROOF_OF_WORK)
            .build()
        messageRepo.save(plaintext)
        plaintext.ackMessage!!.let { ackMessage ->
            repo.putObject(ProofOfWorkRepository.Item(
                objectMessage = ackMessage,
                nonceTrialsPerByte = 1000,
                extraBytes = 1000,
                expirationTime = UnixTime.now + 10 * UnixTime.MINUTE,
                message = plaintext
            ))
        }
        assertThat(repo.getItems().size, `is`(sizeBefore + 1))
    }

    @Test
    fun `ensure item can be retrieved`() {
        val item = repo.getItem(initialHash1)
        assertThat(item, notNullValue())
        assertThat<ObjectPayload>(item.objectMessage.payload, instanceOf<ObjectPayload>(GetPubkey::class.java))
        assertThat(item.nonceTrialsPerByte, `is`(1000L))
        assertThat(item.extraBytes, `is`(1000L))
    }

    @Test
    fun `ensure ack item can be retrieved`() {
        val item = repo.getItem(initialHash2)
        assertThat(item, notNullValue())
        assertThat<ObjectPayload>(item.objectMessage.payload, instanceOf<ObjectPayload>(GenericPayload::class.java))
        assertThat(item.nonceTrialsPerByte, `is`(1000L))
        assertThat(item.extraBytes, `is`(1000L))
        assertThat(item.expirationTime, not<Number>(0))
        assertThat(item.message, notNullValue())
        assertThat<PrivateKey>(item.message?.from?.privateKey, notNullValue())
        assertThat<Pubkey>(item.message?.to?.pubkey, notNullValue())
    }

    @Test(expected = RuntimeException::class)
    fun `ensure retrieving non-existing item causes exception`() {
        repo.getItem(ByteArray(0))
    }

    @Test
    fun `ensure item can be deleted`() {
        repo.removeObject(initialHash1)
        repo.removeObject(initialHash2)
        assertTrue(repo.getItems().isEmpty())
    }

    @Test
    fun `ensure deletion of non-existing item is handled silently`() {
        repo.removeObject(ByteArray(0))
    }
}