Explore topic-wise InterviewSolutions in .

Which code COVERAGE has BOOLEAN sub expressions evaluate to both true and false?
CHOOSE the correct option from below list
(1)function coverage
(2)Branch coverage
(3)Statement coverage
(4)predicate coverage

Answer:-(4)predicate coverage

Which among the following is said to have a preprogrammed behavior and as WELL as preprogrammed expectations?
Choose the CORRECT options from below list
(1)stubs
(2)SPIES
(3)mocks
(4)fakes

Answer-(3)mocks

To use Eslint on the MACHINE, node.js is must.
Choose the CORRECT option from below list
(1)TRUE
(2)False

Answer:-(1)True

By default Eslint does not have a parser.
Choose the CORRECT option from below LIST
(1)FALSE
(2)True

Answer:-(1)False

nyc can fail tests if the COVERAGE FALLS under a threshold using ___________.
Choose the correct OPTION frombelow list
(1)nyc require
(2)nyc MOCHA
(3)nyc check-coverage
(4)nyc report

Answer:-()nyc check-coverage

Which AMONG the following Javascript library is used to bring out lines of code that DEVIATE from coding STYLE guides?
Choose the correct option from below list
(1)Karma
(2)ESLint
(3)blanket.js
(4)mocha

Answer:-(2)ESLint

Write an example of spy wrapping on EXISTING METHOD
var setNameSpy = sinon.spy(USER, "setName")
is an example of spy wrapping an existing method?
(1)FALSE
(2)True

Answer:-(2)True

Which of the following is a Istanbul plugin that gives support for ES6/ES2015?
CHOOSE the correct OPTION from below LIST
(1)tap
(2)chai
(3)babel-plugin-istanbul
(4)nyc

Answer:-(3)babel-plugin-istanbul

Clover is a TYPE of istanbul reporter which output reports in __________ format.
Choose the CORRECT option from list
(1)HTML
(2)txt
(3).xml
(4)JSON

Answer:-(3).xml

By DEFAULT, MOCHA checks unit tests using the path ________
Choose the correct option from below list
(1)Both
(2)./test/*.COFFEE
(3)./test/*.js
(4)None of the options

Answer-(1)Both

Which of the following is an assertion library?
Choose the CORRECT option from below list
(1)sinon
(2)mocha
(3)nyc
(4)chai

Answer-(4)chai

Which of the FOLLOWING is the ECMA 7 feature that allows PROMISES WITHOUT sending CALLBACK to .then and instead the value will be returned by the asynchrnous function?
Please select the correct option from below list
(1)finally()
(2)Chai-as-promised
(3)Async/Await
(4)done()

Answer:-(3)Async/Await

Which of the following is not a javascript linter?
Choose the CORRECT OPTION from below list
(1)JsHint
(2)ESLINT
(3)lint4j
(4)Jslint

Answer:-(3)lint4j

________ are fake methods with pre-programmed behaviour and pre-programmed expectation.
Choose the correct option from below LIST
(1)Fakes
(2)MOCKS
(3)Spies
(4)Stubs

Answer:-(2)Mocks

stub.yields() is used to call the FIRST callback when anyargument is passed to it.
Choose the CORRECT option from below LIST
(1)True
(2)False

Answer:-(1)True

Which of the chai assertion styles do not WORK in Internet Explorer?
CHOOSE the correct option from below list
(1)spie
(2)should
(3)EXPECT
(4)assert

Answer:-(2)should

Which of the following is the ECMA 7 feature that allows promises without SENDING CALLBACK to.
then and instead the value will be returned by the asynchronous function?
CHOOSE the correct answer from below list
(1)done()
(2)Chai-as-promised
(3)finally()
(4)Async/Await

Answer:-(4)Async/Await

Which type of testing involves testing the individual functions or CLASSES by mocking input and making sure the output is as expected?
Choose the CORRECT option from below list
(1)mocha
(2)integration testing
(3)unit testing
(4)functional testing

Answer:-(3)unit testing

Which of the following is the UNIT testing functionality that spawns a webserver and runs source code against test code for configured BROWSERS?
Choose the correct option from below LIST
(1)sinon
(2)CHAI
(3)karma
(4)mocha

Answer:-(3)karma

Which among the following test double is USED to replace a TARGET function with pre PROGRAMMED method directing to specific path?
Choose the correct option from below LIST
(1)Mocks
(2)Stub
(3)SPIE
(4)Dummies

Answer:-(2)Stub

___________ are specified using formatter or F on COMMAND line.
Choose the correct option from below list
(1)turn on a rule
(2)FORMATTERS
(3)configurations
(4)globals

Answer:-(2)Formatters

What is the Testdouble that are FAKE methods with preprogrammed BEHAVIOR and EXPECTATION?
Choose the correct option from below list
(1)MOCKS
(2)Stubs
(3)Dummies
(4)Fakes

Answer:-(1)Mocks

When spying an original function we need to restore the original function USING __________.
Choose the CORRECT option from below list
(1)sinon.spy()
(2)object.method.restore
(3)sinon.spy(obj,'method')
(4)sinon.stub()

Answer:-(2)object.method.restore

Which among the FOLLOWING is SAID to have a preprogrammed behavior?
Choose the correct OPTION from below LIST
(1)fakes
(2)spies
(3)mocks
(4)stubs

Answer:-(4)stubs

Which of the FOLLOWING test double is used to record function CALLS, arguments and exceptions THROWN?
CHOOSE the correct ANSWER from below list
(1)Dummies
(2)Spies
(3)Mocks
(3)Fakes

Answer:-(2)Spies

Istanbul uses ___________ JavaScript parser for generating measured version of code.
Choose the CORRECT option from below list
(1)Esprima
(2)acorn
(3)CANOPY
(4)PEG

Answer:-(1)Esprima

Lambdas lexically BIND _______ and cannot ACCESS the mocha content. So passing arrow FUNCTIONS in Mocha is discouraged.
Choose the correct option from below list
(1)then
(2)it()
(3)DESCRIBE()
(4)None of the options

Answer:-(1)then

Is the following unit testing an asynchronous code is VALID?
it("Using setTimeout() to SIMULATE ASYNC code!",
function(done){ setTimeout(function() { console.log("Test"); }, 200); });
Choose the correct option from below LIST
(1)Invalid
(2)Valid

Answer:-(1)Invalid

What happens if an ERROR is thrown inside then?
Choose the correct option from below list
(1)MOCHA never HEARS about the error
(2)All the options
(3)The error will be swallowed by promise
(4)Throws a timeout after WAITING for a while

Answer:-(2)All the options

What is default STYLE of interface of MOCHA framework?
Choose the correct option from below list
(1)Both
(2)TDD
(3)BDD
(4)NONE of the options

Answer-(3)BDD

Which of the following is a headless browser that runs on RUNNING Javascript?
Choose the correct OPTION from below list
(1)ChromeCanary
(2)PHANTOMJS
(3)Protractor
(4)Casper

Answer:-(2)PhantomJS

Each UNIT test should test ONE concern only.
Choose the correct answer from below list
(1)TRUE
(2)False

Answer:-(1)True

In Eslint, LINTING rules can be TURNED on or off using javascript COMMENTS embedding configuration rules.
Choose the CORRECT answer from below LIST
(1)True
(2)False

Answer:-(1)True

The MOCHA hook that runs first before executing any tests in a DESCRIBE() BLOCK is ___________.
CHOOSE the correct option from list
(1)afterEach()
(2)after()
(3)beforeEach()
(4)before()

Answer:-(4)before()