node-postgres/test/integration/client/result-metadata-tests.js

"use strict";
var helper = require("./test-helper");
var pg = helper.pg;

const pool = new pg.Pool()
new helper.Suite().test('should return insert metadata', function() {
  pool.connect(assert.calls(function(err, client, done) {
    assert(!err);

    helper.versionGTE(client, '9.0.0', assert.success(function(hasRowCount) {
      client.query("CREATE TEMP TABLE zugzug(name varchar(10))", assert.calls(function(err, result) {
        assert(!err);
        assert.equal(result.oid, null);
        assert.equal(result.command, 'CREATE');

        var q = client.query("INSERT INTO zugzug(name) VALUES('more work?')", assert.calls(function(err, result) {
          assert(!err);
          assert.equal(result.command, "INSERT");
          assert.equal(result.rowCount, 1);

          client.query('SELECT * FROM zugzug', assert.calls(function(err, result) {
            assert(!err);
            if(hasRowCount) assert.equal(result.rowCount, 1);
            assert.equal(result.command, 'SELECT');
            done();
            process.nextTick(pool.end.bind(pool));
          }));
        }));
      }));
    }));
  }));
});