Move `Assume` to spring-boot-test-support

Fixes gh-10866

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/ConditionalOnJavaTests.java

@@ -25,9 +25,9 @@ import org.junit.Test;
 
 import org.springframework.boot.autoconfigure.condition.ConditionalOnJava.Range;
 import org.springframework.boot.system.JavaVersion;
-import org.springframework.boot.test.Assume;
 import org.springframework.boot.test.context.HideClassesClassLoader;
 import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.boot.testsupport.Assume;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.util.ReflectionUtils;
@@ -48,7 +48,7 @@ public class ConditionalOnJavaTests {
 
 	@Test
 	public void doesNotMatchIfBetterVersionIsRequired() {
-		Assume.javaVersion(JavaVersion.EIGHT);
+		Assume.javaEight();
 		this.contextRunner.withUserConfiguration(Java9Required.class)
 				.run((context) -> assertThat(context).doesNotHaveBean(String.class));
 	}
@@ -93,13 +93,13 @@ public class ConditionalOnJavaTests {
 
 	@Test
 	public void java8IsDetected() throws Exception {
-		Assume.javaVersion(JavaVersion.EIGHT);
+		Assume.javaEight();
 		assertThat(getJavaVersion()).isEqualTo("1.8");
 	}
 
 	@Test
 	public void java8IsTheFallback() throws Exception {
-		Assume.javaVersion(JavaVersion.EIGHT);
+		Assume.javaEight();
 		assertThat(getJavaVersion(Function.class, Files.class, ServiceLoader.class))
 				.isEqualTo("1.8");
 	}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/liquibase/LiquibaseAutoConfigurationTests.java

@@ -36,12 +36,11 @@ import org.springframework.boot.autoconfigure.jdbc.EmbeddedDataSourceConfigurati
 import org.springframework.boot.jdbc.DataSourceBuilder;
 import org.springframework.boot.liquibase.CommonsLoggingLiquibaseLogger;
 import org.springframework.boot.liquibase.LiquibaseServiceLocatorApplicationListener;
-import org.springframework.boot.system.JavaVersion;
-import org.springframework.boot.test.Assume;
 import org.springframework.boot.test.context.assertj.AssertableApplicationContext;
 import org.springframework.boot.test.context.runner.ApplicationContextRunner;
 import org.springframework.boot.test.context.runner.ContextConsumer;
 import org.springframework.boot.test.rule.OutputCapture;
+import org.springframework.boot.testsupport.Assume;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Primary;
@@ -114,7 +113,7 @@ public class LiquibaseAutoConfigurationTests {
 
 	@Test
 	public void changelogSql() {
-		Assume.javaVersion(JavaVersion.EIGHT);
+		Assume.javaEight();
 		this.contextRunner.withUserConfiguration(EmbeddedDataSourceConfiguration.class)
 				.withPropertyValues(
 						"spring.liquibase.change-log:classpath:/db/changelog/db.changelog-override.sql")

spring-boot-project/spring-boot-tools/spring-boot-test-support/src/main/java/org/springframework/boot/testsupport/Assume.java

@@ -14,11 +14,11 @@
  * limitations under the License.
  */
 
-package org.springframework.boot.test;
+package org.springframework.boot.testsupport;
 
 import org.junit.AssumptionViolatedException;
 
-import org.springframework.boot.system.JavaVersion;
+import org.springframework.util.ClassUtils;
 
 /**
  * Provides utility methods that allow JUnit tests to {@link org.junit.Assume} certain
@@ -26,20 +26,13 @@ import org.springframework.boot.system.JavaVersion;
  * skipped.
  *
  * @author Stephane Nicoll
- * @since 2.0.0
  */
 public abstract class Assume {
 
-	/**
-	 * Assume that the specified {@link JavaVersion} is the one currently available.
-	 * @param version the expected Java version
-	 * @throws AssumptionViolatedException if the assumption fails
-	 */
-	public static void javaVersion(JavaVersion version) {
-		JavaVersion current = JavaVersion.getJavaVersion();
-		org.junit.Assume.assumeTrue(
-				String.format("This test should run on %s (got %s)", version, current),
-				current == version);
+	public static void javaEight() {
+		if (ClassUtils.isPresent("java.security.cert.URICertStoreParameters", null)) {
+			throw new AssumptionViolatedException("Assumed Java 8 but got Java 9");
+		}
 	}
 
 }