Polish “Add constructor to TestRestTemplate that takes a RestTemplateBuilder”

Closes gh-6702

spring-boot-test/src/main/java/org/springframework/boot/test/web/client/TestRestTemplate.java

@@ -84,17 +84,14 @@ public class TestRestTemplate {
 
 	/**
 	 * Create a new {@link TestRestTemplate} instance.
-	 * @param restTemplateBuilder builder used to configure underlying {@link RestTemplate}
+	 * @param restTemplateBuilder builder used to configure underlying
+	 * {@link RestTemplate}
+	 * @since 1.4.1
 	 */
 	public TestRestTemplate(RestTemplateBuilder restTemplateBuilder) {
 		this(buildRestTemplate(restTemplateBuilder));
 	}
 
-	private static RestTemplate buildRestTemplate(RestTemplateBuilder restTemplateBuilder) {
-		Assert.notNull(restTemplateBuilder, "RestTemplateBuilder must not be null");
-		return restTemplateBuilder.build();
-	}
-
 	/**
 	 * Create a new {@link TestRestTemplate} instance.
 	 * @param httpClientOptions client options to use if the Apache HTTP Client is used
@@ -130,6 +127,12 @@ public class TestRestTemplate {
 		this.restTemplate = restTemplate;
 	}
 
+	private static RestTemplate buildRestTemplate(
+			RestTemplateBuilder restTemplateBuilder) {
+		Assert.notNull(restTemplateBuilder, "RestTemplateBuilder must not be null");
+		return restTemplateBuilder.build();
+	}
+
 	private void addAuthentication(RestTemplate restTemplate, String username,
 			String password) {
 		if (username == null) {

spring-boot-test/src/test/java/org/springframework/boot/test/web/client/TestRestTemplateTests.java

@@ -50,8 +50,7 @@ public class TestRestTemplateTests {
 		RestTemplateBuilder builder = mock(RestTemplateBuilder.class);
 		RestTemplate delegate = new RestTemplate();
 		given(builder.build()).willReturn(delegate);
-		assertThat(new TestRestTemplate(builder).getRestTemplate())
-				.isEqualTo(delegate);
+		assertThat(new TestRestTemplate(builder).getRestTemplate()).isEqualTo(delegate);
 	}
 
 	@Test