@Test
  public void removeEmptyKey() {
    server1.invoke(() -> verifyKeyIsPresent(REPLICATE_REGION_NAME, EMPTY_STRING));
    server2.invoke(() -> verifyKeyIsPresent(REPLICATE_REGION_NAME, EMPTY_STRING));

    String command = "remove --key=\"\" --region=" + REPLICATE_REGION_NAME;
    gfsh.executeAndAssertThat(command).statusIsSuccess();

    server1.invoke(() -> verifyKeyIsRemoved(REPLICATE_REGION_NAME, EMPTY_STRING));
    server2.invoke(() -> verifyKeyIsRemoved(REPLICATE_REGION_NAME, EMPTY_STRING));
  }
Test remove from a region with a zero-length string key (GEODE-2269)
geode-gfsh/src/distributedTest/java/org/apache/geode/management/internal/cli/commands/RemoveCommandDUnitTest.java