diff --git a/core-groovy-2/pom.xml b/core-groovy-2/pom.xml
index ba3fd0802b..85f6106e95 100644
--- a/core-groovy-2/pom.xml
+++ b/core-groovy-2/pom.xml
@@ -48,6 +48,11 @@
             <version>${spock-core.version}</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+		    <groupId>com.github.groovy-wslite</groupId>
+		    <artifactId>groovy-wslite</artifactId>
+		    <version>1.1.3</version>
+		</dependency>
     </dependencies>
 
     <build>
diff --git a/core-groovy-2/src/test/groovy/com/baeldung/webservice/WebserviceUnitTest.groovy b/core-groovy-2/src/test/groovy/com/baeldung/webservice/WebserviceUnitTest.groovy
new file mode 100644
index 0000000000..edf2dca33f
--- /dev/null
+++ b/core-groovy-2/src/test/groovy/com/baeldung/webservice/WebserviceUnitTest.groovy
@@ -0,0 +1,148 @@
+package com.baeldung.webservice
+
+import groovy.json.JsonSlurper
+import wslite.rest.ContentType
+import wslite.rest.RESTClient
+import wslite.rest.RESTClientException
+import wslite.soap.SOAPClient
+import wslite.soap.SOAPMessageBuilder
+
+class WebserviceUnitTest extends GroovyTestCase {
+
+    JsonSlurper jsonSlurper = new JsonSlurper()
+
+    static RESTClient client = new RESTClient("https://postman-echo.com")
+    
+    static {
+        client.defaultAcceptHeader = ContentType.JSON
+        client.httpClient.sslTrustAllCerts = true
+    }
+
+    void testHttpGetRequest() {
+        def postmanGet = new URL('https://postman-echo.com/get')
+        def getConnection = postmanGet.openConnection()
+        getConnection.requestMethod = 'GET'
+        assert getConnection.responseCode == 200
+        if (getConnection.responseCode == 200) {
+            assert jsonSlurper.parseText(getConnection.content.text)?.headers?.host == "postman-echo.com"
+        }
+    }
+
+    void testHttpPostRequest() {
+        def postmanPost = new URL('https://postman-echo.com/post')
+        def query = "q=This is post request form parameter."
+        def postConnection = postmanPost.openConnection()
+        postConnection.requestMethod = 'POST'
+        assert postConnection.responseCode == 200
+    }
+    
+    void testHttpPostRequestWithParams() {
+        def postmanPost = new URL('https://postman-echo.com/post')
+        def form = "param1=This is request parameter."
+        def postConnection = postmanPost.openConnection()
+        postConnection.requestMethod = 'POST'
+        postConnection.doOutput = true
+        def text
+        postConnection.with {
+            outputStream.withWriter { outputStreamWriter ->
+                outputStreamWriter << form
+            }
+            text = content.text
+        }
+        assert postConnection.responseCode == 200
+        assert jsonSlurper.parseText(text)?.json.param1 == "This is request parameter."
+    }
+    
+    void testRssFeed() {
+        def rssFeed = new XmlParser().parse("https://news.google.com/rss?hl=en-US&gl=US&ceid=US:en")
+        def stories = []
+        (0..4).each {
+            def item = rssFeed.channel.item.get(it)
+            stories << item.title.text()
+        }
+        assert stories.size() == 5
+    }
+
+    void testAtomFeed() {
+        def atomFeed = new XmlParser().parse("https://news.google.com/atom?hl=en-US&gl=US&ceid=US:en")
+        def stories = []
+        (0..4).each {
+            def entry = atomFeed.entry.get(it)
+            stories << entry.title.text()
+        }
+        assert stories.size() == 5
+    }
+    
+    void testSoapClient() {
+        def url = "http://www.dataaccess.com/webservicesserver/numberconversion.wso"
+        def soapClient = new SOAPClient(url)
+        def message = new SOAPMessageBuilder().build({
+            body {
+                NumberToWords(xmlns: "http://www.dataaccess.com/webservicesserver/") {
+                    ubiNum(1234)
+                }
+            }
+        })
+        def response = soapClient.send(message.toString());
+        def words = response.NumberToWordsResponse
+        assert words == "one thousand two hundred and thirty four "
+    }
+
+    void testRestClientGet() {
+        def path = "/get"
+        def response
+        try {
+            response = client.get(path: path)
+            assert response.statusCode == 200
+            assert response.json?.headers?.host == "postman-echo.com"
+        } catch (RESTClientException e) {
+            assert e?.response?.statusCode != 200
+        }
+    }
+
+    void testRestClientPost() {
+        def path = "/post"
+        def params = ["foo":1,"bar":2]
+        def response
+        try {
+            response = client.post(path: path) {
+                type ContentType.JSON
+                json params
+            }
+            assert response.json?.data == params
+        } catch (RESTClientException e) {
+            e.printStackTrace()
+            assert e?.response?.statusCode != 200
+        }
+    }
+
+    void testBasicAuthentication() {
+        def path = "/basic-auth"
+        def response
+        try {
+            response = client.get(path: path, headers: ["Authorization": "Basic cG9zdG1hbjpwYXNzd29yZA=="])
+            assert response.statusCode == 200
+            assert response.json?.authenticated == true
+        } catch (RESTClientException e) {
+            assert e?.response?.statusCode != 200
+        }
+    }
+
+    void testOAuth() {
+        RESTClient oAuthClient = new RESTClient("https://postman-echo.com")
+        oAuthClient.defaultAcceptHeader = ContentType.JSON
+        oAuthClient.httpClient.sslTrustAllCerts = true
+
+        def path = "/oauth1"
+        def params = [oauth_consumer_key: "RKCGzna7bv9YD57c", oauth_signature_method: "HMAC-SHA1", oauth_timestamp:1567089944, oauth_nonce: "URT7v4", oauth_version: 1.0, oauth_signature: 'RGgR/ktDmclkM0ISWaFzebtlO0A=']
+        def response
+        try {
+            response = oAuthClient.get(path: path, query: params)
+            assert response.statusCode == 200
+            assert response.statusMessage == "OK"
+            assert response.json.status == "pass"
+        } catch (RESTClientException e) {
+            assert e?.response?.statusCode != 200
+        }
+    }
+}
\ No newline at end of file