Convert thirtyinch module tests to Kotlin

build.gradle

@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = "1.2.51"
+    ext.kotlin_version = "1.3.11"
     repositories {
         google()
         jcenter()

thirtyinch/build.gradle

@@ -1,4 +1,5 @@
 apply plugin: 'com.android.library'
+apply plugin: 'org.jetbrains.kotlin.android'
 apply plugin: 'guru.stefma.bintrayrelease'
 
 android {
@@ -42,6 +43,8 @@ dependencies {
     testImplementation "junit:junit:$junitVersion"
     testImplementation "org.mockito:mockito-core:$mockitoVersion"
     testImplementation "org.assertj:assertj-core:$assertjVersion"
+    testImplementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    testImplementation "io.mockk:mockk:1.8.13.kotlin13"
 
     androidTestImplementation "com.android.support.test:runner:$supportTestVersion"
     androidTestImplementation "org.mockito:mockito-core:$mockitoVersion"

thirtyinch/src/test/java/net/grandcentrix/thirtyinch/test/TestPresenterExampleTest.kt

@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2017 grandcentrix GmbH
+ * 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 net.grandcentrix.thirtyinch.test
+
+import io.mockk.mockk
+import io.mockk.verify
+import net.grandcentrix.thirtyinch.TiPresenter
+import net.grandcentrix.thirtyinch.TiView
+import org.junit.*
+
+class TestPresenterExampleTest {
+
+    private class LoginPresenter : TiPresenter<LoginView>() {
+
+        fun onSubmitClicked() {
+            sendToView { it.showError("No username entered") }
+        }
+    }
+
+    private interface LoginView : TiView {
+
+        fun showError(msg: String)
+    }
+
+    @Test
+    fun `test load data`() {
+        val loginPresenter = LoginPresenter()
+        val testPresenter = loginPresenter.test()
+        val view = testPresenter.attachView(mockk(relaxUnitFun = true))
+
+        loginPresenter.onSubmitClicked()
+        verify { view.showError("No username entered") }
+    }
+}