() -> getDone(allAsList(immediateFailedFuture(new SomeError()))));
    assertThat(expected).hasCauseThat().isInstanceOf(SomeError.class);
    List<LogRecord> logged = aggregateFutureLogHandler.getStoredLogRecords();
    assertThat(logged).hasSize(1); // errors are always logged
    assertThat(logged.get(0).getThrown()).isInstanceOf(SomeError.class);
  }

  /** All as list will log extra exceptions that have already occurred. */

            () -> getDone(allAsList(immediateFailedFuture(new SomeError()))));
    assertThat(expected).hasCauseThat().isInstanceOf(SomeError.class);
    List<LogRecord> logged = aggregateFutureLogHandler.getStoredLogRecords();
    assertThat(logged).hasSize(1); // errors are always logged
    assertThat(logged.get(0).getThrown()).isInstanceOf(SomeError.class);
  }

  /** All as list will log extra exceptions that have already occurred. */

import assertk.assertions.contains
import assertk.assertions.isEqualTo
import assertk.assertions.isFalse
import assertk.assertions.isGreaterThanOrEqualTo
import assertk.assertions.isIn
import assertk.assertions.isInstanceOf
import assertk.assertions.isLessThan
import assertk.assertions.isNotEmpty
import assertk.assertions.isNull
import assertk.assertions.isTrue
import assertk.fail
import java.io.File
import java.io.IOException