BAEL-809 (#2147)

* BAEL-809: Add Kotlin Mockito supporting code

* BAEL-809: Add references to kotlin-mockito library

kotlin-mockito/pom.xml

@@ -20,7 +20,7 @@
         </dependency>
         <dependency>
             <groupId>org.mockito</groupId>
-            <artifactId>mockito-all</artifactId>
+            <artifactId>mockito-core</artifactId>
             <version>${mockito.version}</version>
             <scope>test</scope>
         </dependency>
@@ -30,9 +30,14 @@
             <version>${junit.version}</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>com.nhaarman</groupId>
+            <artifactId>mockito-kotlin</artifactId>
+            <version>${mockito-kotlin.version}</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
-
     <build>
         <sourceDirectory>${project.basedir}/src/main/kotlin</sourceDirectory>
         <testSourceDirectory>${project.basedir}/src/test/kotlin</testSourceDirectory>
@@ -106,9 +111,10 @@
     </build>
 
     <properties>
-        <mockito.version>1.9.5</mockito.version>
+        <mockito.version>2.8.9</mockito.version>
         <junit.version>4.12</junit.version>
         <kotlin.version>1.1.2-4</kotlin.version>
+        <mockito-kotlin.version>1.5.0</mockito-kotlin.version>
         <maven-compiler.version>3.5.1</maven-compiler.version>
     </properties>
 

kotlin-mockito/src/test/kotlin/com/baeldung/kotlin/LendBookManagerTest.kt

@@ -1,9 +1,6 @@
 package com.baeldung.kotlin;
 
-import org.junit.Assert
 import org.junit.Test
-import java.lang.IllegalStateException
-import org.mockito.InjectMocks
 import org.mockito.Mockito
 
 class LibraryManagementTest {
@@ -28,6 +25,6 @@ class LibraryManagementTest {
 
         manager.checkout(100, 1)
 
-        Mockito.`verify`(mockBookService).lend(100, 1)
+        Mockito.verify(mockBookService).lend(100, 1)
     }
 }

kotlin-mockito/src/test/kotlin/com/baeldung/kotlin/LendBookManagerTestMockitoKotlin.kt

@@ -0,0 +1,32 @@
+package com.baeldung.kotlin;
+
+import com.nhaarman.mockito_kotlin.mock
+import com.nhaarman.mockito_kotlin.verify
+import com.nhaarman.mockito_kotlin.whenever
+import org.junit.Test
+
+class LibraryManagementTestMockitoKotlin {
+    @Test(expected = IllegalStateException::class)
+    fun whenBookIsNotAvailable_thenAnExceptionIsThrown() {
+        val mockBookService = mock<BookService>() 
+
+        whenever(mockBookService.inStock(100)).thenReturn(false)
+
+        val manager = LendBookManager(mockBookService)
+
+        manager.checkout(100, 1)
+    }
+
+    @Test
+    fun whenBookIsAvailable_thenLendMethodIsCalled() {
+        val mockBookService : BookService = mock()
+
+        whenever(mockBookService.inStock(100)).thenReturn(true)
+
+        val manager = LendBookManager(mockBookService)
+
+        manager.checkout(100, 1)
+
+        verify(mockBookService).lend(100, 1)
+    }
+}