What is comparison testing in software engineering?

Answer 1

Comparison Testing: Test Cases results are compared with the predicted results of the Test Oracle (Test Oracle: a mechanism to produce the predicted outcomes to compare with the actual outcomes of the software under test [from BS7925-1]) It's a bit of an old fashioned term, in that predicted results are usually included in the test case script. A test matrix with expected result values could be called a test oracle, or a predictive spreadsheet could fulfill that function. Note: Software Testing has developed many redundant/overlapping terminologies over the last decade. e.g. Black Box Testing aka Behavioral Testing aka Functional Testing Don't get too hung up with the terminology, as it varies from organization to organization.

Answer 2

Testing verifies a program by checking it against design document. In a software testing company, testing is a quality assurance (QA) procedure and a type of testing that bases its test cases on the specifications of the software modules under test. In testing, mainly the testing of the functions of module or system is done, it refers to activities that verify a specific action or function of the code. Functions are tested by feeding them input and examining the output, and internal program structure is rarely considered.

Types of Testing:

Smoke Testing comprises of a non-exhaustive set of tests that aim at ensuring that the most important functions work. The results of this testing is used to decide if a build is stable enough to proceed with further testing.

Sanity testing is a kind of Software Testing performed after receiving a software build, with minor changes in code, or functionality, to ascertain that the bugs have been fixed and no further issues are introduced due to these changes. The goal is to determine that the proposed functionality works roughly as expected.

Regression testing is defined as a type of software testing to confirm that a recent program or code change has not adversely affected existing features. Regression testing is nothing but full or partial selection of already executed test cases which are re-executed to ensure existing functionality work fine.

Usability testing refers to evaluating a product or service by testing it with representative users. Typically, during a test, participants will try to complete typical tasks while observers watch, listen and takes notes. The goal is to identify any usability problems, collect qualitative and quantitative data and determine the participant's satisfaction with the product.

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