test/langtools/tools/javac/T8222251/PreflowNotVisitingLambdaExpTest.java

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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
 * @test
 * @bug 8222251
 * @summary preflow visitor is not visiting lambda expressions
 * @compile PreflowNotVisitingLambdaExpTest.java
 */

public class PreflowNotVisitingLambdaExpTest {
    interface HandleCallback<T, X extends Exception> {
        T withHandle(Handle handle) throws X;
    }

    interface HandleConsumer<X extends Exception> {
        void useHandle(Handle handle) throws X;
    }

    interface Handle {}

    interface Jdbi {
        <R, X extends Exception> R withHandle(HandleCallback<R, X> callback) throws X;
        <X extends Exception> void useHandle(final HandleConsumer<X> callback) throws X;
    }

    interface ObjectAssert<ACTUAL> {
        void isSameAs(ACTUAL t);
    }

    static <T> ObjectAssert<T> assertThat(T actual) {
        return null;
    }

    private Jdbi jdbi;

    public void nestedUseHandle() {
        jdbi.withHandle(h1 -> {
            jdbi.useHandle(h2 ->
                    assertThat(h1).isSameAs(h2));
            return null;
        });
    }
}