Fix compatibility with JUnit's ExpectedException

This commit ensures that an exception that is thrown as part of the
`ContextConsumer` callback is thrown as is.

Closes gh-9878

spring-boot-test/src/main/java/org/springframework/boot/test/context/runner/AbstractApplicationContextRunner.java

@@ -34,7 +34,6 @@ import org.springframework.core.ResolvableType;
 import org.springframework.core.env.Environment;
 import org.springframework.core.io.DefaultResourceLoader;
 import org.springframework.util.Assert;
-import org.springframework.util.ReflectionUtils;
 
 /**
  * Utility design to run and an {@link ApplicationContext} and provide AssertJ style
@@ -293,7 +292,19 @@ abstract class AbstractApplicationContextRunner<SELF extends AbstractApplication
 			consumer.accept(context);
 		}
 		catch (Throwable ex) {
-			ReflectionUtils.rethrowRuntimeException(ex);
+			AnyThrow.throwUnchecked(ex);
+		}
+	}
+
+	private static class AnyThrow {
+
+		static void throwUnchecked(Throwable e) {
+			AnyThrow.throwAny(e);
+		}
+
+		@SuppressWarnings("unchecked")
+		private static <E extends Throwable> void throwAny(Throwable e) throws E {
+			throw (E) e;
 		}
 	}
 

spring-boot-test/src/main/java/org/springframework/boot/test/util/TestPropertyValues.java

@@ -45,6 +45,7 @@ import org.springframework.util.StringUtils;
  *
  * @author Madhura Bhave
  * @author Phillip Webb
+ * @author Stephane Nicoll
  * @since 2.0.0
  */
 public final class TestPropertyValues {
@@ -128,11 +129,9 @@ public final class TestPropertyValues {
 		try (SystemPropertiesHandler handler = new SystemPropertiesHandler()) {
 			return call.call();
 		}
-		catch (RuntimeException ex) {
-			throw ex;
-		}
 		catch (Exception ex) {
-			throw new IllegalStateException(ex);
+			AnyThrow.throwUnchecked(ex);
+			return null; // never reached
 		}
 	}
 
@@ -311,4 +310,16 @@ public final class TestPropertyValues {
 
 	}
 
+	private static class AnyThrow {
+
+		static void throwUnchecked(Throwable e) {
+			AnyThrow.throwAny(e);
+		}
+
+		@SuppressWarnings("unchecked")
+		private static <E extends Throwable> void throwAny(Throwable e) throws E {
+			throw (E) e;
+		}
+	}
+
 }