Could you please elaborate your question - What I understand is you wish to know how you can test code in Salesforce? Is that what you are looking for? if yes, please go through the following: https://developer.salesforce.com/page/An_Introduction_to_Apex_Code_Test_Methods
So, mostly SFDC testers do Manual testing in saeslforce. The Unit test in salesforce are usually written by developers. If you are intrested in setting up Autoamtion test then there are several tools and also if you hold expertise in Automation testing then you can build it yourself. We use Go (A Thoughtworks Product) which is now open source to build test Automation.
Could you please elaborate your question - What I understand is you wish to know how you can test code in Salesforce? Is that what you are looking for? if yes, please go through the following: https://developer.salesforce.com/page/An_Introduction_to_Apex_Code_Test_Methods
So, mostly SFDC testers do Manual testing in saeslforce.
The Unit test in salesforce are usually written by developers.
If you are intrested in setting up Autoamtion test then there are several tools and also if you hold expertise in Automation testing then you can build it yourself.
We use Go (A Thoughtworks Product) which is now open source to build test Automation.
Thanks