Garyfimo

//create a map of key/value pairs, called deps (deps)
ext.deps = [:]

//def means we're making a local variable. We'll use this map to build our deps key/value
//pairs below
def versions = [:]
versions.google_services = "4.3.3"
versions.firebase_analytics = "17.2.2"
versions.lifecycle = "2.0.0-rc01"
versions.constraint_layout = "2.0.0-alpha2"

Garyfimo

apply plugin: "com.vanniktech.android.junit.jacoco"

junitJacoco {
    jacocoVersion = '0.8.5'
    ignoreProjects = []
    excludes = [
            '**/R.class',
            '**/R$*.class',
            '**/*$$*',
            '**/BuildConfig.*',

Garyfimo

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    apply from: 'versions.gradle'
    addRepos(repositories)

    dependencies {
        classpath deps.android_gradle_plugin
        classpath deps.kotlin.kotlin_gradle_plugin
        classpath deps.jacoco_android
    }

Garyfimo

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-kapt'
apply from: '../jacoco.gradle'

android {
    compileSdkVersion build_versions.target_sdk

    defaultConfig {

Garyfimo

sealed class ResultadoEvaluacion<out E, out V> {

    data class Valor<out V>(val valor: V) : ResultadoEvaluacion<Nothing, V>()

    data class Error<out E>(val error: E) : ResultadoEvaluacion<E, Nothing>()

    companion object {
        inline fun <V> build(function: () -> V): ResultadoEvaluacion<Exception, V> =
            try {
                Valor(

Garyfimo

interface EvaluadorUseCase {

    suspend fun evaluar(expresion: String): ResultadoEvaluacion<Exception, String>
}

Garyfimo

interface EvaluadorExpresionUseCase {

    suspend fun evaluarExpresion(expresion: String): ResultadoEvaluacion<Exception, String>
}

Garyfimo

class ValidadorUseCaseImpl : ValidadorUseCase {
  
    override suspend fun validar(expresion: String): ResultadoEvaluacion<Exception, Boolean> {
        TODO("Not yet implemented")
    }
}

Garyfimo

import kotlinx.coroutines.runBlocking
import org.junit.Test
import org.junit.jupiter.api.Assertions.assertTrue

internal class ValidadorUseCaseImplTest {

    private val mensajeExpresionNoValida = "Expresion No Valida."

    private val validadorUseCase by lazy {
        ValidadorUseCaseImpl()

Garyfimo

sealed class ErrorEvaluacion(mensaje: String? = null) : Exception(mensaje) {
    class ErrorValidacion : ErrorEvaluacion("Expresion No Valida.")
}