diff --git a/package-lock.json b/package-lock.json
index 4973397ba..e9dfcbf3a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,6 +4,146 @@
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@@ -23,12 +163,23 @@
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@@ -57,9 +208,9 @@
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@@ -252,10 +403,16 @@
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@@ -273,12 +430,36 @@
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@@ -362,6 +576,61 @@
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+    },
+    "y18n": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
+      "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==",
+      "dev": true
+    },
+    "yargs": {
+      "version": "12.0.5",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.5.tgz",
+      "integrity": "sha512-Lhz8TLaYnxq/2ObqHDql8dX8CJi97oHxrjUcYtzKbbykPtVW9WB+poxI+NM2UIzsMgNCZTIf0AQwsjK5yMAqZw==",
+      "dev": true,
+      "requires": {
+        "cliui": "^4.0.0",
+        "decamelize": "^1.2.0",
+        "find-up": "^3.0.0",
+        "get-caller-file": "^1.0.1",
+        "os-locale": "^3.0.0",
+        "require-directory": "^2.1.1",
+        "require-main-filename": "^1.0.1",
+        "set-blocking": "^2.0.0",
+        "string-width": "^2.0.0",
+        "which-module": "^2.0.0",
+        "y18n": "^3.2.1 || ^4.0.0",
+        "yargs-parser": "^11.1.1"
+      }
+    },
+    "yargs-parser": {
+      "version": "11.1.1",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-11.1.1.tgz",
+      "integrity": "sha512-C6kB/WJDiaxONLJQnF8ccx9SEeoTTLek8RVbaOIsrAUS8VrBEXfmeSnCZxygc+XC2sNMBIwOOnfcxiynjHsVSQ==",
+      "dev": true,
+      "requires": {
+        "camelcase": "^5.0.0",
+        "decamelize": "^1.2.0"
+      }
+    },
+    "yargs-unparser": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/yargs-unparser/-/yargs-unparser-1.5.0.tgz",
+      "integrity": "sha512-HK25qidFTCVuj/D1VfNiEndpLIeJN78aqgR23nL3y4N0U/91cOAzqfHlF8n2BvoNDcZmJKin3ddNSvOxSr8flw==",
+      "dev": true,
+      "requires": {
+        "flat": "^4.1.0",
+        "lodash": "^4.17.11",
+        "yargs": "^12.0.5"
+      }
     }
   }
 }
diff --git a/package.json b/package.json
index 31663bdd2..96b178339 100644
--- a/package.json
+++ b/package.json
@@ -8,16 +8,16 @@
   "author": "Vinay Pulim <v@pulim.com>",
   "dependencies": {
     "bluebird": "^3.5.0",
-    "concat-stream": "^1.5.1",
-    "debug": "^2.6.9",
+    "concat-stream": "^2.0.0",
+    "debug": "^4.1.1",
     "httpntlm": "^1.5.2",
     "lodash": "^4.17.5",
     "request": ">=2.9.0",
     "sax": ">=0.6",
     "serve-static": "^1.11.1",
-    "strip-bom": "~0.3.1",
+    "strip-bom": "^3.0.0",
     "uuid": "^3.1.0",
-    "xml-crypto": "~0.8.0"
+    "xml-crypto": "^1.2.0"
   },
   "repository": {
     "type": "git",
@@ -46,34 +46,34 @@
   ],
   "license": "MIT",
   "devDependencies": {
-    "@types/bluebird": "^3.5.25",
-    "@types/debug": "^4.1.1",
+    "@types/bluebird": "^3.5.26",
+    "@types/debug": "^4.1.2",
     "@types/express": "^4.16.1",
-    "@types/lodash": "^4.14.121",
-    "@types/node": "^11.9.4",
+    "@types/lodash": "^4.14.122",
+    "@types/node": "^11.11.0",
     "@types/request": "^2.48.1",
     "@types/sax": "^1.0.1",
     "@types/uuid": "^3.4.4",
     "body-parser": "^1.15.2",
     "colors": "^1.3.3",
-    "coveralls": "^3.0.2",
-    "diff": "^2.2.1",
+    "coveralls": "^3.0.3",
+    "diff": "^4.0.1",
     "doctoc": "^1.4.0",
     "duplexer": "~0.1.1",
     "express": "^4.16.4",
     "finalhandler": "^1.1.1",
     "glob": "^7.1.3",
     "jshint": "^2.10.1",
-    "mocha": "~5.2.0",
-    "nyc": "^11.4.1",
+    "mocha": "^6.0.2",
+    "nyc": "^13.3.0",
     "readable-stream": "~2.0.2",
-    "semver": "~5.0.3",
-    "should": "~3.3.0",
-    "sinon": "^1.17.5",
+    "semver": "^5.6.0",
+    "should": "^13.2.3",
+    "sinon": "^1.17.7",
     "source-map-support": "^0.5.10",
-    "timekeeper": "~0.0.4",
-    "tslint": "^5.12.1",
+    "timekeeper": "^2.1.2",
+    "tslint": "^5.13.1",
     "typedoc": "^0.14.2",
-    "typescript": "^3.3.3"
+    "typescript": "^3.3.3333"
   }
 }
diff --git a/test/mocha.opts b/test/mocha.opts
index f899645a7..0466b212e 100644
--- a/test/mocha.opts
+++ b/test/mocha.opts
@@ -1,4 +1,4 @@
 --reporter spec
---ui exports
+--ui bdd
 --require should
 --require source-map-support/register
diff --git a/test/security/BasicAuthSecurity.js b/test/security/BasicAuthSecurity.js
index 582abd209..00aecd8bb 100644
--- a/test/security/BasicAuthSecurity.js
+++ b/test/security/BasicAuthSecurity.js
@@ -14,6 +14,13 @@ describe('BasicAuthSecurity', function() {
       new BasicAuthSecurity(username, password, {});
     });
 
+    it('Should have Authorization header when addHeaders is invoked', function() {
+      var security = new BasicAuthSecurity(username, password, {});
+      var headers = {};
+      security.addHeaders(headers);
+      headers.should.have.property('Authorization');
+    });
+
     it('is used in addOptions', function() {
       var options = {};
       var defaultOptions = { foo: 3 };
diff --git a/test/security/BearerSecurity.js b/test/security/BearerSecurity.js
index ac54ddb3c..edb759b3e 100644
--- a/test/security/BearerSecurity.js
+++ b/test/security/BearerSecurity.js
@@ -20,5 +20,12 @@ describe('BearerSecurity', function() {
       instance.addOptions(options);
       options.should.have.property("foo", 2);
     });
+
+    it('should return the authoriation header on calling addHeader', () => {
+      const security = new BearerSecurity(token, {});
+      let headers = {};
+      security.addHeaders(headers);
+      headers.should.have.property('Authorization', "Bearer token");
+    });
   });
 });
diff --git a/test/security/ClientSSLSecurity.js b/test/security/ClientSSLSecurity.js
index 015cc55d2..78f7f5ae2 100644
--- a/test/security/ClientSSLSecurity.js
+++ b/test/security/ClientSSLSecurity.js
@@ -44,6 +44,48 @@ describe('ClientSSLSecurity', function() {
     instance.should.have.property("key", keyBuffer);
   });
 
+  it('should accept a String as argument for the key or cert', function () {
+    var certString = join(__dirname, '..', 'certs', 'agent2-cert.pem'),
+      keyString = join(__dirname, '..', 'certs', 'agent2-key.pem'),
+      certBuffer = fs.readFileSync(join(__dirname, '..', 'certs', 'agent2-cert.pem')),
+      keyBuffer = fs.readFileSync(join(__dirname, '..', 'certs', 'agent2-key.pem')),
+      instance;
+
+    instance = new ClientSSLSecurity(keyString, certString, certString);
+    instance.should.have.property("ca", certBuffer);
+    instance.should.have.property("cert", certBuffer);
+    instance.should.have.property("key", keyBuffer);
+  });
+
+  it('should not accept a integer as argument for the key', function () {
+    var instance;
+    try {
+      instance = new ClientSSLSecurity(10);
+    } catch(error) {
+      // do nothing
+    }
+    should(instance).not.be.ok();
+  });
+
+  it('should not accept a integer as argument for the key', function () {
+    var instance;
+    try {
+      instance = new ClientSSLSecurity(null, 10);
+    } catch(error) {
+      // do nothing
+    }
+    should(instance).not.be.ok();
+  });
+
+  it('should return blank string when call toXml', function () {
+    var certBuffer = fs.readFileSync(join(__dirname, '..', 'certs', 'agent2-cert.pem')),
+      keyBuffer = fs.readFileSync(join(__dirname, '..', 'certs', 'agent2-key.pem')),
+      instance;
+
+    instance = new ClientSSLSecurity(keyBuffer, certBuffer, certBuffer);
+    var xml = instance.toXML();
+    xml.should.be.exactly('');
+  });
   it('should accept a Array as argument for the ca', function () {
     var caList = [];
     var instance = new ClientSSLSecurity(null, null, caList);
diff --git a/test/security/ClientSSLSecurityPFX.js b/test/security/ClientSSLSecurityPFX.js
index 5d95f3510..1d07609c0 100644
--- a/test/security/ClientSSLSecurityPFX.js
+++ b/test/security/ClientSSLSecurityPFX.js
@@ -97,4 +97,33 @@ describe('ClientSSLSecurityPFX', function() {
     instance = new ClientSSLSecurityPFX(pfkBuffer);
     instance.should.have.property("pfx", pfkBuffer);
   });
+
+  it('should return a blank when toXML is called', function () {
+    var pfkBuffer = fs.readFileSync(join(__dirname, '..', 'certs', 'pfk-buffer.pfx')),
+      instance;
+
+    instance = new ClientSSLSecurityPFX(pfkBuffer);
+    var xml = instance.toXML();
+    xml.should.be.exactly('');
+  });
+
+  it('should accept a String as argument for the pfx cert', function () {
+    var pfkBuffer = fs.readFileSync(join(__dirname, '..', 'certs', 'pfk-buffer.pfx')),
+      instance;
+
+    instance = new ClientSSLSecurityPFX(join(__dirname, '..', 'certs', 'pfk-buffer.pfx'));
+    instance.should.have.property("pfx", pfkBuffer);
+  });
+
+  it('should have an options with addOptions', function () {
+    var pfkBuffer = fs.readFileSync(join(__dirname, '..', 'certs', 'client-password.pfx')),
+      instance;
+
+    instance = new ClientSSLSecurityPFX(pfkBuffer, 'test2est');
+    var options = { foo: 5 };
+    instance.addOptions(options);
+    options.should.have.property("pfx", pfkBuffer);
+    options.should.have.property("passphrase", 'test2est');
+    options.should.have.property("foo", 5);
+  });
 });
diff --git a/test/wsdl-test.js b/test/wsdl-test.js
index 0f304b554..809f1446a 100644
--- a/test/wsdl-test.js
+++ b/test/wsdl-test.js
@@ -6,232 +6,229 @@ var fs = require('fs'),
     assert = require('assert'),
     sinon = require('sinon');
 
-var wsdlStrictTests = {},
-    wsdlNonStrictTests = {};
+describe('WSDL Parser (strict)', () => {
+  fs.readdirSync(__dirname+'/wsdl/strict').forEach(function(file) {
+    if (!/.wsdl$/.exec(file)) return;
+    it('should parse and describe '+file, (done) => {
+      soap.createClient(__dirname+'/wsdl/strict/'+file, {strict: true}, function(err, client) {
+        assert.ifError(err);
+        client.describe();
+        done();
+      });
+    });
+  });
 
-fs.readdirSync(__dirname+'/wsdl/strict').forEach(function(file) {
-  if (!/.wsdl$/.exec(file)) return;
-  wsdlStrictTests['should parse and describe '+file] = function(done) {
-    soap.createClient(__dirname+'/wsdl/strict/'+file, {strict: true}, function(err, client) {
-      assert.ifError(err);
-      client.describe();
+  it('should catch parse error', (done) => {
+    soap.createClient(__dirname+'/wsdl/bad.txt', {strict: true}, function(err) {
+      assert.notEqual(err, null);
       done();
     });
-  };
-});
+  });
 
-fs.readdirSync(__dirname+'/wsdl').forEach(function(file) {
-  if (!/.wsdl$/.exec(file)) return;
-  wsdlNonStrictTests['should parse and describe '+file] = function(done) {
-    soap.createClient(__dirname+'/wsdl/'+file, function(err, client) {
-      assert.ifError(err);
-      client.describe();
+  it('should not give error as string', (done) => {
+    soap.createClient(__dirname+'/wsdl/bad.txt', function(err) {
+      assert.notEqual(typeof err, 'string');
       done();
     });
-  };
-});
-
-wsdlNonStrictTests['should not parse connection error'] = function(done) {
-  soap.createClient(__dirname+'/wsdl/connection/econnrefused.wsdl', function(err, client) {
-    assert.ok(/EADDRNOTAVAIL|ECONNREFUSED/.test(err), err);
-    done();
   });
-};
 
-wsdlNonStrictTests['should catch parse error'] = function(done) {
-  soap.createClient(__dirname+'/wsdl/bad.txt', function(err) {
-    assert.notEqual(err, null);
-    done();
+  it('should parse external wsdl', (done) => {
+    soap.createClient(__dirname+'/wsdl/wsdlImport/main.wsdl', {strict: true}, function(err, client){
+      assert.ifError(err);
+      assert.deepEqual(Object.keys(client.wsdl.definitions.schemas),
+        ['http://example.com/', 'http://schemas.microsoft.com/2003/10/Serialization/Arrays']);
+      assert.equal(typeof client.getLatestVersion, 'function');
+      done();
+    });
   });
-};
 
-wsdlStrictTests['should catch parse error'] = function(done) {
-  soap.createClient(__dirname+'/wsdl/bad.txt', {strict: true}, function(err) {
-    assert.notEqual(err, null);
-    done();
+  it('should get the parent namespace when parent namespace is empty string', (done) => {
+    soap.createClient(__dirname+'/wsdl/marketo.wsdl', {strict: true}, function(err, client){
+      assert.ifError(err);
+      client.getLeadChanges({
+          batchSize: 1,
+          startPosition: {activityCreatedAt: '2014-04-14T22:03:48.587Z'},
+          activityNameFilter: {stringItem: ['Send Email']}
+        }, function() {
+          done();
+        });
+    });
   });
-};
 
-wsdlNonStrictTests['should not give error as string'] = function(done) {
-  soap.createClient(__dirname+'/wsdl/bad.txt', function(err) {
-    assert.notEqual(typeof err, 'string');
-    done();
+  it('should describe extended elements in correct order', (done) => {
+    var expected = '{"DummyService":{"DummyPortType":{"Dummy":{"input":{"DummyRequest":{"DummyField1":"xs:string","DummyField2":"xs:string"},"ExtendedDummyField":"xs:string"},"output":{"DummyResult":"c:DummyResult"}}}}}';
+    soap.createClient(__dirname+'/wsdl/extended_element.wsdl', function(err, client){
+      assert.ifError(err);
+      assert.equal(JSON.stringify(client.describe()), expected);
+      done();
+    });
   });
-};
 
-wsdlStrictTests['should not give error as string'] = function(done) {
-  soap.createClient(__dirname+'/wsdl/bad.txt', function(err) {
-    assert.notEqual(typeof err, 'string');
-    done();
+  it('should handle element ref', (done) => {
+    var expectedMsg = '<ns1:fooRq xmlns:ns1="http://example.com/bar/xsd"' +
+      ' xmlns="http://example.com/bar/xsd"><bar1:paymentRq' +
+      ' xmlns:bar1="http://example.com/bar1/xsd">' +
+      '<bar1:bankSvcRq>' +
+      '<bar1:requestUID>001</bar1:requestUID></bar1:bankSvcRq>' +
+      '</bar1:paymentRq></ns1:fooRq>';
+    soap.createClient(__dirname + '/wsdl/elementref/foo.wsdl', {strict: true}, function(err, client) {
+      assert.ifError(err);
+      client.fooOp({paymentRq: {bankSvcRq: {requestUID: '001'}}}, function(err, result) {
+        assert.equal(client.lastMessage, expectedMsg);
+        done();
+      });
+    });
   });
-};
 
-wsdlStrictTests['should parse external wsdl'] = function(done) {
-  soap.createClient(__dirname+'/wsdl/wsdlImport/main.wsdl', {strict: true}, function(err, client){
-    assert.ifError(err);
-    assert.deepEqual(Object.keys(client.wsdl.definitions.schemas),
-      ['http://example.com/', 'http://schemas.microsoft.com/2003/10/Serialization/Arrays']);
-    assert.equal(typeof client.getLatestVersion, 'function');
-    done();
+  it('should handle type ref', (done) => {
+    var expectedMsg = require('./wsdl/typeref/request.xml.js');
+    var reqJson = require('./wsdl/typeref/request.json');
+    soap.createClient(__dirname + '/wsdl/typeref/order.wsdl', {strict: true}, function(err, client) {
+      assert.ifError(err);
+      client.order(reqJson, function(err, result) {
+        assert.equal(client.lastMessage, expectedMsg);
+        done();
+      });
+    });
   });
-};
 
-wsdlStrictTests['should get the parent namespace when parent namespace is empty string'] = function(done) {
-  soap.createClient(__dirname+'/wsdl/marketo.wsdl', {strict: true}, function(err, client){
-    assert.ifError(err);
-    client.getLeadChanges({
-        batchSize: 1,
-        startPosition: {activityCreatedAt: '2014-04-14T22:03:48.587Z'},
-        activityNameFilter: {stringItem: ['Send Email']}
-      }, function() {
+  it('should parse POJO into xml without making unnecessary recursion', (done) => {
+    var expectedMsg = require('./wsdl/perf/request.xml.js');
+    var reqJson = require('./wsdl/perf/request.json');
+    var spy = sinon.spy(WSDL.prototype, "findChildSchemaObject");
+
+    soap.createClient(__dirname + '/wsdl/perf/order.wsdl', {strict: true}, function(err, client) {
+      var i, spyCall;
+
+      assert.ifError(err);
+      client.order(reqJson, function(err, result) {
+        assert.equal(client.lastMessage, expectedMsg);
+
+        // since the reqJson does not use the element named "thing", then findChildSchemaObject should never get to the type named RabbitHole
+        // see perf/ns1.xsd
+        // this tests the fix for the performance problem where we too many calls to findChildSchemaObject
+        // https://github.com/CumberlandGroup/node-ews/issues/58
+        assert.ok(spy.callCount);
+        for (i = 0; i < spy.callCount; i++) {
+          spyCall = spy.getCall(i);
+          if (spyCall.args[0]) {
+            assert.notEqual(spyCall.args[0].$type, "RabbitHole");
+          }
+        }
+
+        spy.restore();
         done();
       });
-  });
-};
-
-wsdlStrictTests['should describe extended elements in correct order'] = function(done) {
-  var expected = '{"DummyService":{"DummyPortType":{"Dummy":{"input":{"DummyRequest":{"DummyField1":"xs:string","DummyField2":"xs:string"},"ExtendedDummyField":"xs:string"},"output":{"DummyResult":"c:DummyResult"}}}}}';
-  soap.createClient(__dirname+'/wsdl/extended_element.wsdl', function(err, client){
-    assert.ifError(err);
-    assert.equal(JSON.stringify(client.describe()), expected);
-    done();
-  });
-};
-
-wsdlStrictTests['should handle element ref'] = function(done) {
-  var expectedMsg = '<ns1:fooRq xmlns:ns1="http://example.com/bar/xsd"' +
-    ' xmlns="http://example.com/bar/xsd"><bar1:paymentRq' +
-    ' xmlns:bar1="http://example.com/bar1/xsd">' +
-    '<bar1:bankSvcRq>' +
-    '<bar1:requestUID>001</bar1:requestUID></bar1:bankSvcRq>' +
-    '</bar1:paymentRq></ns1:fooRq>';
-  soap.createClient(__dirname + '/wsdl/elementref/foo.wsdl', {strict: true}, function(err, client) {
-    assert.ifError(err);
-    client.fooOp({paymentRq: {bankSvcRq: {requestUID: '001'}}}, function(err, result) {
-      assert.equal(client.lastMessage, expectedMsg);
-      done();
     });
   });
-};
 
-wsdlStrictTests['should handle type ref'] = function(done) {
-  var expectedMsg = require('./wsdl/typeref/request.xml.js');
-  var reqJson = require('./wsdl/typeref/request.json');
-  soap.createClient(__dirname + '/wsdl/typeref/order.wsdl', {strict: true}, function(err, client) {
-    assert.ifError(err);
-    client.order(reqJson, function(err, result) {
-      assert.equal(client.lastMessage, expectedMsg);
-      done();
+  it('should get empty namespace prefix', (done) => {
+    var expectedMsg = '<ns1:fooRq xmlns:ns1="http://example.com/bar/xsd"' +
+      ' xmlns="http://example.com/bar/xsd"><bar1:paymentRq' +
+      ' xmlns:bar1="http://example.com/bar1/xsd">' +
+      '<bar1:bankSvcRq>' +
+      '<requestUID>001</requestUID></bar1:bankSvcRq>' +
+      '</bar1:paymentRq></ns1:fooRq>';
+    // var expectedMsg = 'gg';
+
+    soap.createClient(__dirname + '/wsdl/elementref/foo.wsdl', {strict: true}, function(err, client) {
+      assert.ifError(err);
+      client.fooOp({paymentRq: {bankSvcRq: {':requestUID': '001'}}}, function(err, result) {
+        assert.equal(client.lastMessage, expectedMsg);
+        done();
+      });
     });
   });
-};
 
-wsdlStrictTests['should parse POJO into xml without making unnecessary recursion'] = function(done) {
-  var expectedMsg = require('./wsdl/perf/request.xml.js');
-  var reqJson = require('./wsdl/perf/request.json');
-  var spy = sinon.spy(WSDL.prototype, "findChildSchemaObject");
+  it('should merge schema with attributes', (done) => {
+    var expectedMsg =
+      '<peatdef:AskPeat xmlns:peatdef="urn:peat.def" xmlns="urn:peat.def">' +
+        '<peatdef:Question>How are you?</peatdef:Question>' +
+      '</peatdef:AskPeat>';
 
-  soap.createClient(__dirname + '/wsdl/perf/order.wsdl', {strict: true}, function(err, client) {
-    var i, spyCall;
+    soap.createClient(__dirname + '/wsdl/mergeWithAttributes/main.wsdl', {}, function(err, client) {
+      assert.ok(!err);
+      client.AskPeat({ Question: 'How are you?' }, function(err, result) {
+        assert.equal(client.lastMessage, expectedMsg);
+        done();
+      });
+    });
+  });
 
-    assert.ifError(err);
-    client.order(reqJson, function(err, result) {
-      assert.equal(client.lastMessage, expectedMsg);
+});
 
-      // since the reqJson does not use the element named "thing", then findChildSchemaObject should never get to the type named RabbitHole
-      // see perf/ns1.xsd
-      // this tests the fix for the performance problem where we too many calls to findChildSchemaObject
-      // https://github.com/CumberlandGroup/node-ews/issues/58
-      assert.ok(spy.callCount);
-      for (i = 0; i < spy.callCount; i++) {
-        spyCall = spy.getCall(i);
-        if (spyCall.args[0]) {
-          assert.notEqual(spyCall.args[0].$type, "RabbitHole");
-        }
-      }
+describe('WSDL Parser (non-strict)', () => {
+  fs.readdirSync(__dirname+'/wsdl').forEach(function(file) {
+    if (!/.wsdl$/.exec(file)) return;
+    it('should parse and describe '+file, (done) => {
+      soap.createClient(__dirname+'/wsdl/'+file, function(err, client) {
+        assert.ifError(err);
+        client.describe();
+        done();
+      });
+    });
+  });
 
-      spy.restore();
+  it('should not parse connection error', (done) => {
+    soap.createClient(__dirname+'/wsdl/connection/econnrefused.wsdl', function(err, client) {
+      assert.ok(/EADDRNOTAVAIL|ECONNREFUSED/.test(err), err);
       done();
     });
   });
-};
 
-wsdlStrictTests['should get empty namespace prefix'] = function(done) {
-  var expectedMsg = '<ns1:fooRq xmlns:ns1="http://example.com/bar/xsd"' +
-    ' xmlns="http://example.com/bar/xsd"><bar1:paymentRq' +
-    ' xmlns:bar1="http://example.com/bar1/xsd">' +
-    '<bar1:bankSvcRq>' +
-    '<requestUID>001</requestUID></bar1:bankSvcRq>' +
-    '</bar1:paymentRq></ns1:fooRq>';
-  // var expectedMsg = 'gg';
-
-  soap.createClient(__dirname + '/wsdl/elementref/foo.wsdl', {strict: true}, function(err, client) {
-    assert.ifError(err);
-    client.fooOp({paymentRq: {bankSvcRq: {':requestUID': '001'}}}, function(err, result) {
-      assert.equal(client.lastMessage, expectedMsg);
+  it('should catch parse error', (done) => {
+    soap.createClient(__dirname+'/wsdl/bad.txt', function(err) {
+      assert.notEqual(err, null);
       done();
     });
   });
-};
 
-wsdlNonStrictTests['should load same namespace from included xsd'] = function(done) {
-  var expected = '{"DummyService":{"DummyPortType":{"Dummy":{"input":{"ID":"IdType|xs:string|pattern","Name":"NameType|xs:string|minLength,maxLength"},"output":{"Result":"dummy:DummyList"}}}}}';
-  soap.createClient(__dirname + '/wsdl/xsdinclude/xsd_include.wsdl', function(err, client) {
-    assert.ifError(err);
-    assert.equal(JSON.stringify(client.describe()), expected);
-    done();
+  it('should not give error as string', (done) => {
+    soap.createClient(__dirname+'/wsdl/bad.txt', function(err) {
+      assert.notEqual(typeof err, 'string');
+      done();
+    });
   });
-};
-
-wsdlNonStrictTests['should all attributes to root elements'] = function(done) {
-  var expectedMsg = '<ns1:fooRq xmlns:ns1="http://example.com/bar/xsd"' +
-    ' xmlns="http://example.com/bar/xsd"><bar1:paymentRq bar1:test="attr"' +
-    ' xmlns:bar1="http://example.com/bar1/xsd">' +
-    '<bar1:bankSvcRq>' +
-    '<requestUID>001</requestUID></bar1:bankSvcRq>' +
-    '</bar1:paymentRq></ns1:fooRq>';
-  // var expectedMsg = 'gg';
 
-  soap.createClient(__dirname + '/wsdl/elementref/foo.wsdl', {}, function(err, client) {
-    assert.ok(!err);
-    client.fooOp({paymentRq: { attributes: {'bar1:test': 'attr'}, bankSvcRq: {':requestUID': '001'}}}, function(err, result) {
-      assert.equal(client.lastMessage, expectedMsg);
+  it('should load same namespace from included xsd', (done) => {
+    var expected = '{"DummyService":{"DummyPortType":{"Dummy":{"input":{"ID":"IdType|xs:string|pattern","Name":"NameType|xs:string|minLength,maxLength"},"output":{"Result":"dummy:DummyList"}}}}}';
+    soap.createClient(__dirname + '/wsdl/xsdinclude/xsd_include.wsdl', function(err, client) {
+      assert.ifError(err);
+      assert.equal(JSON.stringify(client.describe()), expected);
       done();
     });
   });
-};
 
-wsdlNonStrictTests['should merge schema with attributes'] = function(done) {
-  var expectedMsg =
-    '<peatdef:AskPeat xmlns:peatdef="urn:peat.def" xmlns="urn:peat.def">' +
-      '<peatdef:Question>How are you?</peatdef:Question>' +
-    '</peatdef:AskPeat>';
+  it('should all attributes to root elements', (done) => {
+    var expectedMsg = '<ns1:fooRq xmlns:ns1="http://example.com/bar/xsd"' +
+      ' xmlns="http://example.com/bar/xsd"><bar1:paymentRq bar1:test="attr"' +
+      ' xmlns:bar1="http://example.com/bar1/xsd">' +
+      '<bar1:bankSvcRq>' +
+      '<requestUID>001</requestUID></bar1:bankSvcRq>' +
+      '</bar1:paymentRq></ns1:fooRq>';
+    // var expectedMsg = 'gg';
 
-  soap.createClient(__dirname + '/wsdl/mergeWithAttributes/main.wsdl', {}, function(err, client) {
-    assert.ok(!err);
-    client.AskPeat({ Question: 'How are you?' }, function(err, result) {
-      assert.equal(client.lastMessage, expectedMsg);
-      done();
+    soap.createClient(__dirname + '/wsdl/elementref/foo.wsdl', {}, function(err, client) {
+      assert.ok(!err);
+      client.fooOp({paymentRq: { attributes: {'bar1:test': 'attr'}, bankSvcRq: {':requestUID': '001'}}}, function(err, result) {
+        assert.equal(client.lastMessage, expectedMsg);
+        done();
+      });
     });
   });
-};
 
-wsdlStrictTests['should merge schema with attributes'] = function(done) {
-  var expectedMsg =
-    '<peatdef:AskPeat xmlns:peatdef="urn:peat.def" xmlns="urn:peat.def">' +
-      '<peatdef:Question>How are you?</peatdef:Question>' +
-    '</peatdef:AskPeat>';
+  it('should merge schema with attributes', (done) => {
+    var expectedMsg =
+      '<peatdef:AskPeat xmlns:peatdef="urn:peat.def" xmlns="urn:peat.def">' +
+        '<peatdef:Question>How are you?</peatdef:Question>' +
+      '</peatdef:AskPeat>';
 
-  soap.createClient(__dirname + '/wsdl/mergeWithAttributes/main.wsdl', {}, function(err, client) {
-    assert.ok(!err);
-    client.AskPeat({ Question: 'How are you?' }, function(err, result) {
-      assert.equal(client.lastMessage, expectedMsg);
-      done();
+    soap.createClient(__dirname + '/wsdl/mergeWithAttributes/main.wsdl', {}, function(err, client) {
+      assert.ok(!err);
+      client.AskPeat({ Question: 'How are you?' }, function(err, result) {
+        assert.equal(client.lastMessage, expectedMsg);
+        done();
+      });
     });
   });
-};
-
-module.exports = {
-  'WSDL Parser (strict)': wsdlStrictTests,
-  'WSDL Parser (non-strict)': wsdlNonStrictTests
-};
+});