Adds indices.rollover test

Author: picandocodigo

tests/indices/rollover.yml

@@ -0,0 +1,69 @@
+---
+teardown:
+  - do:
+      indices.delete: { index: logs-1 }
+  - do:
+      indices.delete: { index: logs-000002 }
+---
+"Rollover index via API":
+  # create index with alias
+  - do:
+      indices.create:
+        index: logs-1
+        wait_for_active_shards: 1
+        body:
+          aliases:
+            logs_index: {}
+            logs_search: {}
+  # index document
+  - do:
+      index:
+        index: logs-1
+        id:    "1"
+        body:  { "foo": "hello world" }
+        # make this doc visible in index stats
+        refresh: true
+  - do:
+      get:
+        index: logs_search
+        id:    "1"
+  - match: { _index:   logs-1 }
+  - match: { _id:      "1"     }
+  - match: { _source:  { foo: "hello world" } }
+
+  # perform alias rollover
+  - do:
+      indices.rollover:
+        alias: "logs_search"
+        wait_for_active_shards: 1
+        body:
+          conditions:
+            max_docs: 1
+  - match: { old_index: logs-1 }
+  - match: { new_index: logs-000002 }
+  - match: { rolled_over: true }
+  - match: { dry_run: false }
+  - match: { conditions: { "[max_docs: 1]": true } }
+
+  # ensure new index is created
+  - do:
+      indices.exists:
+        index: logs-000002
+  - is_true: ''
+
+  # index into new index
+  - do:
+      index:
+        index: logs-000002
+        id:    "2"
+        body:  { "foo": "hello world" }
+  - do:
+      indices.refresh: {}
+
+  # check alias points to the new index
+  - do:
+      search:
+        rest_total_hits_as_int: true
+        index: logs_search
+  - match: { hits.total: 1 }
+  - match: { hits.hits.0._index: "logs-000002"}