Added MockitoSugarSpec.

Author: cheeseng

src/test/scala/org/scalatestplus/mockito/MockitoSugarSpec.scala

@@ -0,0 +1,67 @@
+/*
+ * Copyright 2001-2020 Artima, Inc.
+ *
+ * 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 org.scalatestplus.mockito
+
+import org.scalatest.funsuite.AnyFunSuite
+import org.mockito.Mockito.{verify, times}
+
+class MockitoSugarSpec extends AnyFunSuite with MockitoSugar {
+
+  trait Collaborator {
+    def documentAdded(name: String): Unit
+    def documentChanged(name: String): Unit
+  }
+
+  class ClassUnderTest {
+
+    private val docs = new scala.collection.mutable.ListBuffer[String]
+    private val listeners = new scala.collection.mutable.ListBuffer[Collaborator]
+
+    def addListener(listener: Collaborator): Unit = {
+      listeners += listener  
+    }
+
+    def addDocument(name: String, bytes: Array[Byte]): Unit = {
+      if (docs.contains(name))
+        listeners.foreach(_.documentChanged(name))
+      else {
+        docs += name  
+        listeners.foreach(_.documentAdded(name))
+      } 
+    }
+
+  }
+
+  test("MockitoSugar should mock object for testing") {
+    // First, create the mock object
+    val mockCollaborator = mock[Collaborator]
+
+    // Create the class under test and pass the mock to it
+    val classUnderTest = new ClassUnderTest
+    classUnderTest.addListener(mockCollaborator)
+
+    // Use the class under test
+    classUnderTest.addDocument("Document", new Array[Byte](0))
+    classUnderTest.addDocument("Document", new Array[Byte](0))
+    classUnderTest.addDocument("Document", new Array[Byte](0))
+    classUnderTest.addDocument("Document", new Array[Byte](0))
+
+    // Then verify the class under test used the mock object as expected
+    verify(mockCollaborator).documentAdded("Document")
+    verify(mockCollaborator, times(3)).documentChanged("Document")
+  }
+
+}