private void createSimpleIndexA() throws Exception {
    CommandStringBuilder csb = new CommandStringBuilder(CliStrings.CREATE_INDEX);
    csb.addOption(CliStrings.CREATE_INDEX__NAME, indexName);
    csb.addOption(CliStrings.CREATE_INDEX__EXPRESSION, "key");
    csb.addOption(CliStrings.CREATE_INDEX__REGION, SEPARATOR + regionName);
    gfsh.executeAndAssertThat(csb.toString()).statusIsSuccess()
        .containsOutput("Index successfully created");
  }
this test class test: CreateIndexCommand, DestroyIndexCommand, ListIndexCommand
geode-dunit/src/main/java/org/apache/geode/management/internal/cli/commands/IndexCommandsIntegrationTestBase.java