Polish

initializr-generator/src/test/java/io/spring/initializr/generator/io/IndentingWriterTests.java

@@ -16,6 +16,7 @@
 
 package io.spring.initializr.generator.io;
 
+import java.io.IOException;
 import java.io.StringWriter;
 
 import org.junit.jupiter.api.Test;
@@ -74,17 +75,18 @@ class IndentingWriterTests {
 	}
 
 	@Test
-	void customIndentStrategyIsUsed() {
-		IndentingWriter customIndentingWriter = new IndentingWriter(this.stringWriter,
-				new SimpleIndentStrategy("\t"));
-		customIndentingWriter.println("a");
-		customIndentingWriter.indented(() -> {
-			customIndentingWriter.println("b");
+	void customIndentStrategyIsUsed() throws IOException {
+		try (IndentingWriter customIndentingWriter = new IndentingWriter(
+				this.stringWriter, new SimpleIndentStrategy("\t"))) {
+			customIndentingWriter.println("a");
 			customIndentingWriter.indented(() -> {
-				customIndentingWriter.print("c");
-				customIndentingWriter.println("e");
+				customIndentingWriter.println("b");
+				customIndentingWriter.indented(() -> {
+					customIndentingWriter.print("c");
+					customIndentingWriter.println("e");
+				});
 			});
-		});
+		}
 		assertThat(this.stringWriter.toString()).isEqualTo("a\n\tb\n\t\tce\n");
 	}
 

initializr-generator/src/test/java/io/spring/initializr/generator/test/project/AbstractProjectGenerationTester.java

@@ -34,6 +34,7 @@ import io.spring.initializr.generator.project.ProjectGenerationException;
 /**
  * Base tester for project generation.
  *
+ * @param <SELF> concrete type of the tester
  * @author Stephane Nicoll
  */
 public abstract class AbstractProjectGenerationTester<SELF extends AbstractProjectGenerationTester<SELF>> {