How To Use Soap UI For Testing Web Service

SoapUI  Tool:

SoapUI is an open-source web service testing application for service-oriented architectures (SOA) and representational state transfers (REST). Its functionality covers web service inspection, invoking, development, simulation and mocking, functional testing, load and compliance testing

Sample wsdl : 
http://webservices.oorsprong.org/websamples.countryinfo/CountryInfoService.wso?wsdl 

STEPS:

Step 1: Open SoapUI Tool, as shown in below screen

 Step 2: Click on File and create one new soap project, as shown in below screen

Step 3: Provide project name and wsdl url, as shown in below screen.
http://webservices.oorsprong.org/websamples.countryinfo/CountryInfoService.wso?wsdl 

 Step 4: Newly created soap project will be shown in SoapUI Tool,

Step 5: Expanding created project CountryInfoService, we will get getCapitalCity method,
In getCapital city request by passing country code we will get capital of that country.

Result: Getting Delhi as capital after passing country code IN.