Expect.js Assertions

Question 1

ok

Answer 1

asserts that the value is truthy or not

Question 2

be( value ) or equal( value )

Answer 2

Asserts equality to the ‘Value’. Using ===

Question 3

eql( value )

Answer 3

asserts loose equality that works with objects

Question 4

a( typeof ) or an( typeof )

Answer 4

asserts typeof with support for array type and instanceof

Question 5

match( regex )

Answer 5

asserts String regular expression match

Question 6

contains( value )

Answer 6

asserts indexOf for an array or string

Question 7

length( number )

Answer 7

asserts array .length

Question 8

empty()

Answer 8

asserts that an array is empty or not

Question 9

property( key, value )

Answer 9

asserts presence of an own property (and value optionally)

Question 10

keys( value, …)

Answer 10

asserts the presence of a key. Supports the only modifier

Question 11

throwException

Answer 11

asserts that the Function throws or not when called

Question 12

within( range1, range2 )

Answer 12

asserts a number within a range

Question 13

greaterThan( value )

Answer 13

asserts a value is greater then value.

Question 14

lessThen( value )

Answer 14

asserts a value is less then.

Question 15

fail

Answer 15

explicity forces failure.