Tutorial 8: Integratietests maken voor de API met JUnit

Nu we de REST routes in de applicatie hebben geschreven, gaan we hiervoor een aantal integratie tests schrijven. Met behulp van deze tests kunnen we eenvoudig controleren of alle functionaliteit die we gemaakt hebben nog steeds werkt na het uitbreiden / aanpassen van onze code.

Author: vincentKool

.gitignore

@@ -1,3 +1,5 @@
+/src/main/java/keys
+
 ## https://github.com/github/gitignore/blob/master/Global/JetBrains.gitignore
 # Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and Webstorm
 # Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839

.idea/modules/tutorial_test.iml

@@ -41,6 +41,10 @@ dependencies {
     compile("com.squareup.retrofit2:retrofit:2.0.1")
     compile("com.squareup.retrofit2:converter-gson:2.0.1")
 
+    testCompile("org.springframework.boot:spring-boot-starter-test")
+    testCompile("junit:junit")
+    testCompile("com.jayway.restassured:rest-assured:2.9.0")
+
 }
 
 task wrapper(type: Wrapper) {

build.gradle

@@ -1,6 +1,6 @@
-#Fri Aug 12 11:40:32 CEST 2016
+#Sat Aug 13 11:30:28 CEST 2016
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.3-all.zip

gradle/wrapper/gradle-wrapper.properties

@@ -2,4 +2,6 @@ debug=true
 
 flyway.locations=classpath:db/migration,classpath:db/fixtures
 
-spring.datasource.name=testdb
+spring.datasource.name=testdb
+
+application.youtube.api_key={key}

src/main/resources/application-dev.properties

@@ -0,0 +1,27 @@
+package tutorial;
+
+import com.jayway.restassured.RestAssured;
+import org.junit.Before;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.test.IntegrationTest;
+import org.springframework.boot.test.SpringApplicationConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.web.WebAppConfiguration;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringApplicationConfiguration(Application.class)
+@WebAppConfiguration
+@IntegrationTest("server.port:0")
+public abstract class ApplicationIntegrationTest {
+
+    @Value("${local.server.port}")
+    int port;
+
+    @Before
+    public void setUp() throws Exception {
+        RestAssured.port = port;
+    }
+
+}
+

src/test/java/tutorial/ApplicationIntegrationTest.java

@@ -0,0 +1,18 @@
+package tutorial.api.controllers;
+
+import org.junit.Assert;
+import org.junit.Test;
+import tutorial.ApplicationIntegrationTest;
+
+import static com.jayway.restassured.RestAssured.get;
+
+public class HomeControllerTest extends ApplicationIntegrationTest {
+
+    @Test
+    public void index() throws Exception {
+        String result = get("/api/hello").asString();
+
+        Assert.assertEquals("Hello Backend Server", result);
+    }
+
+}

src/test/java/tutorial/api/controllers/HomeControllerTest.java

@@ -0,0 +1,91 @@
+package tutorial.api.controllers;
+
+import com.jayway.restassured.response.Response;
+import org.junit.Assert;
+import org.junit.Test;
+import tutorial.ApplicationIntegrationTest;
+
+import java.util.HashMap;
+
+import static com.jayway.restassured.RestAssured.get;
+import static com.jayway.restassured.RestAssured.given;
+import static com.jayway.restassured.path.json.JsonPath.from;
+
+public class ProductControllerTest extends ApplicationIntegrationTest {
+
+    private HashMap<String, Object> stubProduct1 = new HashMap<String,
+            Object>() {{
+        put("id", 1);
+        put("name", "Macbook Air");
+        put("price", 999.95F);
+    }};
+
+    private HashMap<String, Object> stubProduct2 = new HashMap<String,
+            Object>() {{
+        put("id", 2);
+        put("name", "Magic Mouse");
+        put("price", 69.95F);
+    }};
+
+    private HashMap<String, Object> stubProduct3 = new HashMap<String,
+            Object>() {{
+        put("id", 3);
+        put("name", "Sunglasses");
+        put("price", 14.50F);
+    }};
+
+    @Test
+    public void showAll() throws Exception {
+        Response response = get("/api/products");
+        Assert.assertEquals(200, response.getStatusCode());
+
+        String json = response.asString();
+
+        HashMap<String, Object> product1 = from(json).get("[0]");
+
+        for (String key : stubProduct1.keySet()) {
+            Assert.assertTrue(product1.containsKey(key));
+            Assert.assertEquals(product1.get(key), stubProduct1.get(key));
+        }
+
+        HashMap<String, Object> product2 = from(json).get("[1]");
+
+        for (String key : stubProduct2.keySet()) {
+            Assert.assertTrue(product2.containsKey(key));
+            Assert.assertEquals(product2.get(key), stubProduct2.get(key));
+        }
+    }
+
+    @Test
+    public void show() throws Exception {
+        Response response = get("/api/products/{productId}", 1);
+        Assert.assertEquals(200, response.getStatusCode());
+        String json = response.asString();
+
+        HashMap<String, Object> product1 = from(json).get();
+
+        for (String key : stubProduct1.keySet()) {
+            Assert.assertTrue(product1.containsKey(key));
+            Assert.assertEquals(product1.get(key), stubProduct1.get(key));
+        }
+    }
+
+    @Test
+    public void insert() throws Exception {
+        Response insertResponse = given().parameters("name", stubProduct3.
+                get("name"), "price", stubProduct3.get("price")).post("/api/products");
+        Assert.assertEquals(200, insertResponse.getStatusCode());
+
+        Response getResponse = get("/api/products/{productId}", 3);
+        Assert.assertEquals(200, getResponse.getStatusCode());
+        String json = getResponse.asString();
+
+        HashMap<String, Object> product = from(json).get();
+
+        for (String key : stubProduct3.keySet()) {
+            Assert.assertTrue(product.containsKey(key));
+            Assert.assertEquals(product.get(key), stubProduct3.get(key));
+        }
+    }
+
+}