app/src/test/kotlin/com/pitchedapps/frost/DbFlowTestRule.kt


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package com.pitchedapps.frost

import com.raizlabs.android.dbflow.config.DatabaseConfig
import com.raizlabs.android.dbflow.config.FlowConfig
import com.raizlabs.android.dbflow.config.FlowManager
import org.junit.rules.TestRule
import org.junit.runner.Description
import org.junit.runners.model.Statement
import org.robolectric.RuntimeEnvironment

/**
 * Created by Allan Wang on 2017-05-30.
 */

class DBFlowTestRule : TestRule {

    override fun apply(base: Statement, description: Description): Statement {
        return object : Statement() {

            @Throws(Throwable::class)
            override fun evaluate() {
                FlowManager.init(FlowConfig.Builder(RuntimeEnvironment.application)
                        .addDatabaseConfig(DatabaseConfig.Builder(TestDatabase::class.java)
                                .transactionManagerCreator(::ImmediateTransactionManager)
                                .build()).build())
                try {
                    base.evaluate()
                } finally {
                    FlowManager.destroy()
                }
            }
        }
    }

    companion object {
        fun create() = DBFlowTestRule()
    }
}