add client encoding integration test

Author: sidorares

test/integration/connection/encoding/test-client-encodings.js

@@ -0,0 +1,25 @@
+var mysql = require('../../../../index.js');
+var common = require('../../../common');
+var assert = require('assert');
+
+var connection = common.createConnection({charset: 'UTF8_GENERAL_CI'});
+connection.query('create table if not exists __test_client_encodings (name VARCHAR(200))', function(err) {
+  assert.ifError(err);
+  connection.query('delete from __test_client_encodings', function(err) {
+    assert.ifError(err);
+    connection.end();
+
+    var connection1 = common.createConnection({charset: 'CP1251_GENERAL_CI'});
+    connection1.query('insert into __test_client_encodings values("привет, мир")', function(err) {
+      assert.ifError(err);
+      connection1.end();
+
+      var connection2 = common.createConnection({charset: 'KOI8R_GENERAL_CI'});
+      connection2.query('select * from __test_client_encodings', function(err, rows) {
+        assert.ifError(err);
+        assert.equal(rows[0].name, 'привет, мир');
+        connection2.end();
+      });
+    });
+  });
+});