assertThat(indexMetaData.mappings().get("mapping1").source().string(), equalTo(MAPPING_SOURCE1));
assertThat(indexMetaData.mappings().get("mapping2").source().string(), equalTo(MAPPING_SOURCE2));
assertThat(indexMetaData.aliases().size(), equalTo(4));
assertThat(indexMetaData.aliases().get("alias1").alias(), equalTo("alias1"));
assertThat(indexMetaData.aliases().get("alias1").filter().string(), equalTo(ALIAS_FILTER1));
assertThat(indexMetaData.aliases().get("alias2").alias(), equalTo("alias2"));
assertThat(indexMetaData.aliases().get("alias2").filter(), nullValue());
assertThat(indexMetaData.aliases().get("alias3").alias(), equalTo("alias3"));
assertThat(indexMetaData.aliases().get("alias3").filter(), nullValue());
assertThat(indexMetaData.aliases().get("alias4").alias(), equalTo("alias4"));
assertThat(indexMetaData.aliases().get("alias4").filter().string(), equalTo(ALIAS_FILTER2));