Checks the given specifications against the object.

When the tests are run the actual values are printed to verify visually while each provided specification is validated and a test failure caused if one of them fails.

Specififies that the given number is within the given range, i.e. min<= x <=max.

var spec = {
 x: spok.range(1, 2)   // specifies that x should be >=1 and <=2
}

Specififies that a number is greater than the given criteria.

var spec = {
 x: spok.gt(1)  // specifies that x should be >1
}

Specififies that a number is greater or equal the given criteria.

var spec = {
 x: spok.ge(1)  // specifies that x should be >=1
}

Specififies that a number is less than the given criteria.

var spec = {
 x: spok.lt(1)  // specifies that x should be < 1
}

Specififies that a number is less or equal the given criteria.

var spec = {
 x: spok.le(1)  // specifies that x should be <=1
}

Specifies that the value is not equal another.

var spec = {
 x: spok.ne(undefined)  // specifies that x should be defined
}

Specifies that the value is greater than zero

var spec = {
  x: spok.gtz
}

Specifies that the value is greater or equal zero

var spec = {
  x: spok.gez
}

Specifies that the value is less than zero

var spec = {
  x: spok.ltz
}

Specifies that the value is less or equal zero

var spec = {
  x: spok.lez
}

Specifies that the input is of a given type.

var spec = {
 x: spok.type('number')  // specifies that x should be a Number
}

Specifies that the input is an array.

var spec = {
 x: spok.array  // specifies that x should be an Array
}

Specifies that the input is an array with a specific number of elements

var spec = { x: spok.arrayElements(2) // specifies that x should be an Array with 2 elements }

Specifies that the input is an array with a number of elements in a given range

var spec = { x: spok.arrayElementsRange(2, 4) // specifies that x should be an Array with 2-4 elements }

Specifies that the input of type number and isNaN(x) returns false.

var spec = {
 x: spok.number  // specifies that x should be a Number
}

Specifies that the input is a string.

var spec = {
  x: spok.string  // specifies that x should be a String
}

Specifies that the input is a function.

var spec = {
  x: spok.function  // specifies that x should be a function
}

Specifies that the input is an object and it is not null.

var spec = {
 x: spok.definedObject  // specifies that x is a non-null object
}

Specifies that the string starts with the specified substring.

NOTE: only available with node.js which has an ES6 startsWith function

var spec = {
 x: spok.startsWith('hello')  // specifies that x should start with 'hello'
}

Specifies that the string ends with the specified substring.

NOTE: only available with node.js which has an ES6 endsWith function

var spec = {
 x: spok.endsWith('hello')  // specifies that x should start with 'hello'
}

Specifies that the string needs to match the given regular expression.

var spec = {
  x: spok.test(/hello$/) // specifies that x should match /hello$/
}

Specifies that a value is defined, i.e. it is neither null nor undefined.

var spec = {
  x: spok.defined
}

Specifies that a value is notDefined, i.e. it is either null or notDefined.

var spec = {
  x: spok.notDefined
}