Rename ApplicationContextTester -> Runner

Rename `ApplicationContextTester` and related classes to
`ApplicationContextRunner` and refactor existing tests to use correctly
named variables.

See gh-9875

spring-boot-test/src/test/java/org/springframework/boot/test/context/AbstractApplicationContextRunnerTests.java

@@ -34,15 +34,15 @@ import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.fail;
 
 /**
- * Abstract tests for {@link AbstractApplicationContextTester} implementations.
+ * Abstract tests for {@link AbstractApplicationContextRunner} implementations.
  *
- * @param <T> The tester type
+ * @param <T> The runner type
  * @param <C> the context type
  * @param <A> the assertable context type
  * @author Stephane Nicoll
  * @author Phillip Webb
  */
-public abstract class AbstractApplicationContextTesterTests<T extends AbstractApplicationContextTester<T, C, A>, C extends ConfigurableApplicationContext, A extends AssertProviderApplicationContext<C>> {
+public abstract class AbstractApplicationContextRunnerTests<T extends AbstractApplicationContextRunner<T, C, A>, C extends ConfigurableApplicationContext, A extends AssertProviderApplicationContext<C>> {
 
 	@Rule
 	public final ExpectedException thrown = ExpectedException.none();

spring-boot-test/src/test/java/org/springframework/boot/test/context/ApplicationContextRunnerTests.java

@@ -19,17 +19,17 @@ package org.springframework.boot.test.context;
 import org.springframework.context.ConfigurableApplicationContext;
 
 /**
- * Tests for {@link ApplicationContextTester}.
+ * Tests for {@link ApplicationContextRunner}.
  *
  * @author Stephane Nicoll
  * @author Phillip Webb
  */
-public class ApplicationContextTesterTests extends
-		AbstractApplicationContextTesterTests<ApplicationContextTester, ConfigurableApplicationContext, AssertableApplicationContext> {
+public class ApplicationContextRunnerTests extends
+		AbstractApplicationContextRunnerTests<ApplicationContextRunner, ConfigurableApplicationContext, AssertableApplicationContext> {
 
 	@Override
-	protected ApplicationContextTester get() {
-		return new ApplicationContextTester();
+	protected ApplicationContextRunner get() {
+		return new ApplicationContextRunner();
 	}
 
 }

spring-boot-test/src/test/java/org/springframework/boot/test/context/ReactiveWebApplicationContextRunnerTests.java

@@ -19,17 +19,17 @@ package org.springframework.boot.test.context;
 import org.springframework.boot.web.reactive.context.ConfigurableReactiveWebApplicationContext;
 
 /**
- * Tests for {@link ReactiveWebApplicationContextTester}.
+ * Tests for {@link ReactiveWebApplicationContextRunner}.
  *
  * @author Stephane Nicoll
  * @author Phillip Webb
  */
-public class ReactiveWebApplicationContextTesterTests extends
-		AbstractApplicationContextTesterTests<ReactiveWebApplicationContextTester, ConfigurableReactiveWebApplicationContext, AssertableReactiveWebApplicationContext> {
+public class ReactiveWebApplicationContextRunnerTests extends
+		AbstractApplicationContextRunnerTests<ReactiveWebApplicationContextRunner, ConfigurableReactiveWebApplicationContext, AssertableReactiveWebApplicationContext> {
 
 	@Override
-	protected ReactiveWebApplicationContextTester get() {
-		return new ReactiveWebApplicationContextTester();
+	protected ReactiveWebApplicationContextRunner get() {
+		return new ReactiveWebApplicationContextRunner();
 	}
 
 }

spring-boot-test/src/test/java/org/springframework/boot/test/context/WebApplicationContextRunnerTests.java

@@ -24,13 +24,13 @@ import org.springframework.web.context.ConfigurableWebApplicationContext;
 import static org.assertj.core.api.Assertions.assertThat;
 
 /**
- * Tests for {@link WebApplicationContextTester}.
+ * Tests for {@link WebApplicationContextRunner}.
  *
  * @author Stephane Nicoll
  * @author Phillip Webb
  */
-public class WebApplicationContextTesterTests extends
-		AbstractApplicationContextTesterTests<WebApplicationContextTester, ConfigurableWebApplicationContext, AssertableWebApplicationContext> {
+public class WebApplicationContextRunnerTests extends
+		AbstractApplicationContextRunnerTests<WebApplicationContextRunner, ConfigurableWebApplicationContext, AssertableWebApplicationContext> {
 
 	@Test
 	public void contextShouldHaveMockServletContext() throws Exception {
@@ -39,8 +39,8 @@ public class WebApplicationContextTesterTests extends
 	}
 
 	@Override
-	protected WebApplicationContextTester get() {
-		return new WebApplicationContextTester();
+	protected WebApplicationContextRunner get() {
+		return new WebApplicationContextRunner();
 	}
 
 }