Merge pull request eugenp#14183 from thibaultfaure/article/BAEL-6587

BAEL-6587 Code for the Mockito Exception article

Author: davidmartinezbarua

testing-modules/mockito-2/pom.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xmlns="http://maven.apache.org/POM/4.0.0"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <artifactId>mockito-2</artifactId>
 

testing-modules/mockito-2/src/main/java/com/baeldung/wantedbutnotinvocked/Helper.java

@@ -0,0 +1,9 @@
+package com.baeldung.wantedbutnotinvocked;
+
+class Helper {
+
+    String getBaeldungString() {
+        return "Baeldung";
+    }
+
+}

testing-modules/mockito-2/src/main/java/com/baeldung/wantedbutnotinvocked/Main.java

@@ -0,0 +1,14 @@
+package com.baeldung.wantedbutnotinvocked;
+
+class Main {
+
+    Helper helper = new Helper();
+
+    String methodUnderTest(int i) {
+        if (i > 5) {
+            return helper.getBaeldungString();
+        }
+        return "Hello";
+    }
+
+}

testing-modules/mockito-2/src/test/java/com/baeldung/wantedbutnotinvocked/MainUnitTest.java

@@ -0,0 +1,38 @@
+package com.baeldung.wantedbutnotinvocked;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.Mockito;
+import org.mockito.MockitoAnnotations;
+
+class MainUnitTest {
+
+    @Mock
+    Helper helper;
+
+    @InjectMocks
+    Main main = new Main();
+
+    @BeforeEach
+    void setUp() {
+        MockitoAnnotations.openMocks(this);
+    }
+
+    @Test
+    void givenValueUpperThan5_WhenMethodUnderTest_ThenDelegatesToHelperClass() {
+        main.methodUnderTest(7);
+        Mockito.verify(helper)
+          .getBaeldungString();
+    }
+
+    // Uncomment the next line to see the error
+    // @Test
+    void givenValueLowerThan5_WhenMethodUnderTest_ThenDelegatesToGetBaeldungString() {
+        main.methodUnderTest(3);
+        Mockito.verify(helper)
+          .getBaeldungString();
+    }
+
+}