test: port 19-find-conflicts from python to elixir

Author: hulkoba

test/elixir/test/config/suite.elixir

@@ -735,5 +735,8 @@
   ],
   "IgnoreDesignDocsForAllDocsIndexTests": [
     "should not return design docs"
+  ],
+  "ChooseCorrectIndexForDocs": [
+    "retrieve conflicts"
   ]
 }

test/elixir/test/mango/19_find_conflicts.exs

@@ -0,0 +1,36 @@
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+
+defmodule ChooseCorrectIndexForDocs do
+  use CouchTestCase
+
+  @db_name "find-conflicts"
+
+  setup do
+    doc = %{"_id" => "doc", "a" => 2}
+    conflicts = [%{"_id" => "doc", "_rev" => "1-23202479633c2b380f79507a776743d5", "a" => 1}]
+
+    MangoDatabase.recreate(@db_name)
+    MangoDatabase.save_doc(@db_name, doc)
+    MangoDatabase.save_docs_with_conflicts(@db_name, conflicts)
+    :ok
+  end
+
+  test "retrieve conflicts" do
+    MangoDatabase.create_index(@db_name, ["_conflicts"])
+    selector = %{"_conflicts" => %{"$exists" => true}}
+    {:ok, result} = MangoDatabase.find(@db_name, selector, conflicts: true)
+
+    assert Enum.at(result, 0)["_conflicts"] == ["1-23202479633c2b380f79507a776743d5"]
+    assert Enum.at(result, 0)["_rev"] == "1-3975759ccff3842adf690a5c10caee42"
+  end
+end