[REEF-1898] Add mocked REEF interfaces to improve unit testing of REEF applications

• Type: Test
• Status: Resolved
• Priority: Minor
• Resolution: Implemented
• Fix Version/s: 0.17
• Assignee: Tyson Condie
• Reporter: Sean Po
• Created: 10/Oct/17 22:58
• Updated: 24/Oct/17 22:57
• Resolved: 24/Oct/17 22:57

Description

Currently using REEF, applications can be tested without external setup by using the local runtime. However, this method gives no visibility into Task / Evaluator failures, and successes; the local runtime mocks out components on the Container level. In order to write tests with deeper coverage, a REEF layer needs to be mocked out with hooks provided to control Task / Evaluator flow.