Polish

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/influx/InfluxDbAutoConfigurationTests.java

@@ -20,13 +20,13 @@ import java.util.concurrent.TimeUnit;
 
 import okhttp3.OkHttpClient;
 import org.influxdb.InfluxDB;
-import org.junit.After;
 import org.junit.Test;
 import retrofit2.Retrofit;
 
 import org.springframework.beans.DirectFieldAccessor;
-import org.springframework.boot.test.util.TestPropertyValues;
-import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.test.context.ApplicationContextTester;
+import org.springframework.boot.test.context.AssertableApplicationContext;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
@@ -41,55 +41,57 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 public class InfluxDbAutoConfigurationTests {
 
-	private AnnotationConfigApplicationContext context;
-
-	@After
-	public void tearDown() {
-		if (this.context != null) {
-			this.context.close();
-		}
-	}
+	private final ApplicationContextTester context = new ApplicationContextTester()
+			.withConfiguration(AutoConfigurations.of(InfluxDbAutoConfiguration.class));
 
 	@Test
 	public void influxDbRequiresUrl() {
-		load();
-		assertThat(this.context.getBeansOfType(InfluxDB.class)).isEmpty();
+		this.context.run((loaded) ->
+				assertThat(loaded.getBeansOfType(InfluxDB.class)).isEmpty());
 	}
 
 	@Test
 	public void influxDbCanBeCustomized() {
-		load("spring.influx.url=http://localhost", "spring.influx.password:password",
-				"spring.influx.user:user");
-		assertThat(this.context.getBeansOfType(InfluxDB.class)).hasSize(1);
+		this.context.withPropertyValues("spring.influx.url=http://localhost",
+				"spring.influx.password:password", "spring.influx.user:user")
+				.run((loaded ->
+						assertThat(loaded.getBeansOfType(InfluxDB.class)).hasSize(1)));
 	}
 
 	@Test
 	public void influxDbCanBeCreatedWithoutCredentials() {
-		load("spring.influx.url=http://localhost");
-		assertThat(this.context.getBeansOfType(InfluxDB.class)).hasSize(1);
-		int readTimeout = getReadTimeoutProperty();
+		this.context.withPropertyValues("spring.influx.url=http://localhost")
+				.run((loaded) -> {
+					assertThat(loaded.getBeansOfType(InfluxDB.class)).hasSize(1);
+					int readTimeout = getReadTimeoutProperty(loaded);
 					assertThat(readTimeout).isEqualTo(10_000);
+				});
 	}
 
 	@Test
 	public void influxDbWithoutCredentialsAndOkHttpClientBuilder() {
-		load(CustomOkHttpClientBuilderConfig.class, "spring.influx.url=http://localhost");
-		assertThat(this.context.getBeansOfType(InfluxDB.class)).hasSize(1);
-		int readTimeout = getReadTimeoutProperty();
+		this.context.withUserConfiguration(CustomOkHttpClientBuilderConfig.class)
+				.withPropertyValues("spring.influx.url=http://localhost").run((loaded) -> {
+			assertThat(loaded.getBeansOfType(InfluxDB.class)).hasSize(1);
+			int readTimeout = getReadTimeoutProperty(loaded);
 			assertThat(readTimeout).isEqualTo(30_000);
+		});
 	}
 
 	@Test
 	public void influxDbWithOkHttpClientBuilder() {
-		load(CustomOkHttpClientBuilderConfig.class, "spring.influx.url=http://localhost",
-				"spring.influx.password:password", "spring.influx.user:user");
-		assertThat(this.context.getBeansOfType(InfluxDB.class)).hasSize(1);
-		int readTimeout = getReadTimeoutProperty();
+		this.context.withUserConfiguration(CustomOkHttpClientBuilderConfig.class)
+				.withPropertyValues("spring.influx.url=http://localhost",
+						"spring.influx.password:password", "spring.influx.user:user")
+				.run((loaded) -> {
+					assertThat(loaded.getBeansOfType(InfluxDB.class)).hasSize(1);
+					int readTimeout = getReadTimeoutProperty(loaded);
 					assertThat(readTimeout).isEqualTo(30_000);
+				});
 	}
 
-	private int getReadTimeoutProperty() {
-		InfluxDB influxDB = this.context.getBean(InfluxDB.class);
+	private int getReadTimeoutProperty(AssertableApplicationContext loaded) {
+		InfluxDB influxDB = loaded.getBean(InfluxDB.class);
 		Retrofit retrofit = (Retrofit) new DirectFieldAccessor(influxDB)
 				.getPropertyValue("retrofit");
 		OkHttpClient callFactory = (OkHttpClient) new DirectFieldAccessor(retrofit)
@@ -97,21 +99,6 @@ public class InfluxDbAutoConfigurationTests {
 		return callFactory.readTimeoutMillis();
 	}
 
-	private void load(Class<?> clazz, String... environment) {
-		AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();
-		TestPropertyValues.of(environment).applyTo(ctx);
-		ctx.register(InfluxDbAutoConfiguration.class);
-		if (clazz != null) {
-			ctx.register(clazz);
-		}
-		ctx.refresh();
-		this.context = ctx;
-	}
-
-	private void load(String... environment) {
-		load(null, environment);
-	}
-
 	@Configuration
 	static class CustomOkHttpClientBuilderConfig {