text: /* jshint globalstrict:false, strict:false, unused: false */
  /* global assertEqual, assertFalse, assertNotNull, fail */
  // //////////////////////////////////////////////////////////////////////////////
  // / @brief tests for transactions
  // /
  // / @file
  // /
  // / DISCLAIMER
  // /
  // / Copyright 2010-2012 triagens GmbH, Cologne, Germany
  // /
  // / 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.
  // /
  // / Copyright holder is triAGENS GmbH, Cologne, Germany
  // /
  // / @author Jan Steemann
  // / @author Copyright 2013, triAGENS GmbH, Cologne, Germany
  // //////////////////////////////////////////////////////////////////////////////
  
  var db = require('@arangodb').db;
  var internal = require('internal');
  var jsunity = require('jsunity');
  
  function runSetup () {
    'use strict';
    
    // turn off syncing of counters etc.  
    internal.debugSetFailAt("RocksDBSettingsManagerSync"); 
  
    db._drop('UnitTestsRecovery1');
    db._drop('UnitTestsRecovery2');
  
    let c = db._createEdgeCollection('UnitTestsRecovery1');
    let c2 = db._create('UnitTestsRecovery2');
    c2.insert({}); // make sure count is initalized
  
    let docs = [];
    for (let i = 0; i < 100000; i++) {
      docs.push({ _key: "test" + i, _from: "test/1", _to: "test/" + i, value: i });
      if (docs.length === 10000) {
        c.insert(docs);
        docs = [];
      }
    }
  
    c.ensureIndex({ type: "hash", fields: ["value"] });
    c.ensureIndex({ type: "hash", fields: ["value", "_to"], unique: true });
   
    // should trigger range deletion
    c.truncate();
  
    c2.insert({}, { waitForSync: true });
    internal.debugSegfault('crashing server');
  }
  
  // //////////////////////////////////////////////////////////////////////////////
  // / @brief test suite
  // //////////////////////////////////////////////////////////////////////////////
  
  function recoverySuite () {
    'use strict';
    jsunity.jsUnity.attachAssertions();
  
    return {
      setUp: function () {},
      tearDown: function () {},
  
      testNosyncRangeDeleteTruncateIndexes1: function () {
        let c = db._collection('UnitTestsRecovery1');
        assertEqual(0, c.count());
        assertNotNull(db._collection('UnitTestsRecovery2'));
    
        assertEqual([], c.edges("test/1"));
        let query = "FOR doc IN @@collection FILTER doc.value == @value RETURN doc";
        
        for (let i = 0; i < 100000; i += 1000) {
          assertFalse(c.exists("key" + i));
          assertEqual([], db._query(query, { "@collection": c.name(), value: i }).toArray());
          assertEqual([], c.edges("test/" + i));
        }
  
        internal.waitForEstimatorSync(); // make sure estimates are consistent
        let indexes = c.getIndexes(true);
        assertEqual(indexes.length, 4);
        for (let i of indexes) {
          switch (i.type) {
            case 'primary':
            case 'hash':
            case 'edge':
              assertEqual(i.selectivityEstimate, 1, JSON.stringify(indexes));
              break;
            default:
              fail();
          }
        }
      }
  
    };
  }
  
  // //////////////////////////////////////////////////////////////////////////////
  // / @brief executes the test suite
  // //////////////////////////////////////////////////////////////////////////////
  
  function main (argv) {
    'use strict';
    if (argv[1] === 'setup') {
      runSetup();
      return 0;
    } else {
      jsunity.run(recoverySuite);
      return jsunity.writeDone().status ? 0 : 1;
    }
  }
  