[JAVA-28929] - Upgrade to mustache to Spring boot 3 (#15551)

mustache/pom.xml

@@ -9,9 +9,9 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-boot-2</artifactId>
+        <artifactId>parent-boot-3</artifactId>
         <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../parent-boot-2</relativePath>
+        <relativePath>../parent-boot-3</relativePath>
     </parent>
 
     <dependencies>
@@ -58,6 +58,7 @@
         <mustache.compiler.api.version>0.9.10</mustache.compiler.api.version>
         <datafactory.version>0.8</datafactory.version>
         <webjars.bootstrap.version>3.3.7</webjars.bootstrap.version>
+        <start-class>com.baeldung.springmustache.SpringMustacheApplication</start-class>
     </properties>
 
 </project>

mustache/src/main/java/com/baeldung/springmustache/controller/ArticleController.java

@@ -6,7 +6,6 @@ import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.servlet.ModelAndView;
 
-import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.stream.Collectors;

mustache/src/test/java/com/baeldung/mustache/TodoMustacheServiceUnitTest.java

@@ -71,7 +71,6 @@ public class TodoMustacheServiceUnitTest {
 
         Map<String, Object> context = new HashMap<>();
         assertThat(executeTemplate(m, context)).isEmpty();
-        ;
     }
 
     @Test

mustache/src/test/java/com/baeldung/springmustache/SpringMustacheApplicationIntegrationTest.java

@@ -23,7 +23,7 @@ public class SpringMustacheApplicationIntegrationTest {
 
         ResponseEntity<String> entity = this.restTemplate.getForEntity("/article", String.class);
 
-        Assert.assertTrue(entity.getStatusCode().equals(HttpStatus.OK));
+        Assert.assertEquals(entity.getStatusCode(), HttpStatus.OK);
         Assert.assertTrue(entity.getBody().contains("Article Title 0"));
     }