Add test to examples/simple (from website)

examples/simple/pom.xml

@@ -38,5 +38,16 @@
       <version>${project.version}</version>
       <optional>true</optional>
     </dependency>
+
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.mockito</groupId>
+      <artifactId>mockito-core</artifactId>
+      <scope>test</scope>
+    </dependency>
   </dependencies>
 </project>

examples/simple/src/test/java/coffee/CoffeeMakerTest.java

@@ -0,0 +1,54 @@
+/**
+ * Copyright (C) 2015 Square, 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 coffee;
+
+import dagger.Module;
+import dagger.ObjectGraph;
+import dagger.Provides;
+import javax.inject.Inject;
+import javax.inject.Singleton;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+import org.mockito.Mockito;
+
+public class CoffeeMakerTest {
+  @Inject CoffeeMaker coffeeMaker;
+  @Inject Heater heater;
+
+  @Before public void setUp() {
+    ObjectGraph.create(new TestModule()).inject(this);
+  }
+
+  @Module(
+      includes = DripCoffeeModule.class,
+      injects = CoffeeMakerTest.class,
+      overrides = true
+  )
+  static class TestModule {
+    @Provides @Singleton Heater provideHeater() {
+      return Mockito.mock(Heater.class);
+    }
+  }
+
+  @Test public void testHeaterIsTurnedOnAndThenOff() {
+    Mockito.when(heater.isHot()).thenReturn(true);
+    coffeeMaker.brew();
+    Mockito.verify(heater, Mockito.times(1)).on();
+    Mockito.verify(heater, Mockito.times(1)).off();
+  }
+}

pom.xml

@@ -51,6 +51,7 @@
     <fest.version>1.4</fest.version>
     <truth.version>0.13</truth.version>
     <compile-testing.version>0.4</compile-testing.version>
+    <mockito.version>1.10.19</mockito.version>
   </properties>
 
   <scm>
@@ -114,6 +115,11 @@
         <artifactId>truth</artifactId>
         <version>${truth.version}</version>
       </dependency>
+      <dependency>
+        <groupId>org.mockito</groupId>
+        <artifactId>mockito-core</artifactId>
+        <version>${mockito.version}</version>
+      </dependency>
     </dependencies>
   </dependencyManagement>