BAEL-7136: Improve the companion code for the article to include multiple properties in the @PropertySource annotation (#15885)

testing-modules/spring-testing/pom.xml

@@ -75,6 +75,16 @@
 
     <build>
         <finalName>spring-testing</finalName>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>15</source>
+                    <target>15</target>
+                </configuration>
+            </plugin>
+        </plugins>
         <resources>
             <resource>
                 <directory>src/main/resources</directory>
@@ -87,7 +97,7 @@
         <!-- testing -->
         <java-hamcrest.version>2.0.0.0</java-hamcrest.version>
         <awaitility.version>3.1.6</awaitility.version>
-        <spring.version>5.3.4</spring.version>
+        <spring.version>6.1.3</spring.version>
         <javax.persistence.version>2.1.1</javax.persistence.version>
     </properties>
 

testing-modules/spring-testing/src/main/java/com/baeldung/testpropertysource/ClassUsingProperty.java

@@ -8,8 +8,15 @@ public class ClassUsingProperty {
     
     @Value("${baeldung.testpropertysource.one}")
     private String propertyOne;
-    
+
+    @Value("${baeldung.testpropertysource.two}")
+    private String propertyTwo;
+
     public String retrievePropertyOne() {
         return propertyOne;
     }
+
+    public String retrievePropertyTwo() {
+        return propertyTwo;
+    }
 }

testing-modules/spring-testing/src/test/java/com/baeldung/testpropertysource/MultiplePropertiesInPropertySourceListIntegrationTest.java

@@ -0,0 +1,38 @@
+package com.baeldung.testpropertysource;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@RunWith(SpringRunner.class)
+@ContextConfiguration(classes = ClassUsingProperty.class)
+@TestPropertySource(
+    locations = "/other-location.properties",
+    properties = {
+            "baeldung.testpropertysource.one=one",
+            "baeldung.testpropertysource.two=two",
+    })
+public class MultiplePropertiesInPropertySourceListIntegrationTest {
+
+    @Autowired
+    ClassUsingProperty classUsingProperty;
+
+    @Test
+    public void givenAMultilinePropertySource_whenVariableOneRetrieved_thenValueInPropertyAnnotationIsReturned() {
+        String output = classUsingProperty.retrievePropertyOne();
+
+        assertThat(output).isEqualTo("one");
+    }
+
+    @Test
+    public void givenAMultilinePropertySource_whenVariableTwoRetrieved_thenValueInPropertyAnnotationIsReturned() {
+        String output = classUsingProperty.retrievePropertyTwo();
+
+        assertThat(output).isEqualTo("two");
+    }
+}

testing-modules/spring-testing/src/test/java/com/baeldung/testpropertysource/MultiplePropertiesInPropertySourceTextBlockIntegrationTest.java

@@ -0,0 +1,38 @@
+package com.baeldung.testpropertysource;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@RunWith(SpringRunner.class)
+@ContextConfiguration(classes = ClassUsingProperty.class)
+@TestPropertySource(
+    locations = "/other-location.properties",
+    properties = """
+        baeldung.testpropertysource.one=one
+        baeldung.testpropertysource.two=two
+    """)
+public class MultiplePropertiesInPropertySourceTextBlockIntegrationTest {
+
+    @Autowired
+    ClassUsingProperty classUsingProperty;
+
+    @Test
+    public void givenAMultilinePropertySource_whenVariableOneRetrieved_thenValueInPropertyAnnotationIsReturned() {
+        String output = classUsingProperty.retrievePropertyOne();
+
+        assertThat(output).isEqualTo("one");
+    }
+
+    @Test
+    public void givenAMultilinePropertySource_whenVariableTwoRetrieved_thenValueInPropertyAnnotationIsReturned() {
+        String output = classUsingProperty.retrievePropertyTwo();
+
+        assertThat(output).isEqualTo("two");
+    }
+}

testing-modules/spring-testing/src/test/java/com/baeldung/testpropertysource/PropertiesTestPropertySourceIntegrationTest.java

@@ -18,7 +18,7 @@ public class PropertiesTestPropertySourceIntegrationTest {
     ClassUsingProperty classUsingProperty;
 
     @Test
-    public void givenDefaultTestPropertySource_whenVariableOneRetrieved_thenValueInDefaultFileReturned() {
+    public void givenACustomPropertySource_whenVariableOneRetrieved_thenValueInPropertyAnnotationIsReturned() {
         String output = classUsingProperty.retrievePropertyOne();
 
         assertThat(output).isEqualTo("other-properties-value");