PowerShell Pester Use-assertion

Beans before the preliminary understanding of the basic functions of pester, today continue to look. A very important concept in pester is called assertion (assertion), and his role is to define the results of predictions that should occur by should the keyword (function).

There are several operators behind this shoud

• Be

• beexactly
  

• Begreaterthan

• Belessthan

• Belike

• belikeexactly

• Beoftype

• Exist

• Contain

• containexactly

• Match

• matchexactly

• Throw

• Benullorempty

The following link has the relevant wiki description, interested to see

Https://github.com/pester/Pester/wiki/Should

These key operators can guess from the name of what is what to do, here are a few examples to see how to use.

For example, write a simple sum function in a TEST.PS1

function add {param ([int] $a, [int] $b) $sum = $a + $b $sum}

The corresponding TEST.TESTS.PS1 is written inside this

$here  = Split-Path -Parent  $MyInvocation .mycommand.path$sut =  (split-path - leaf  $MyInvocation. Mycommand.path)  -replace  ' \. Tests\. ',  '.   "$here \ $sut" describe  "Test"  {#Shoud  Be  Compare results, case-insensitive context  "should be  test "{    it " add 1 and 2 is equal to 3 "  {        add 1 2 | should be 3     }      It  "Add -1 and 2 is  not equal to 0 " {        add -1 2  | should not be 0    }} #should  be Exactly  Compare whether the results are the same, case-sensitive context  "should beexactly test" {    it  "HostName"  {         hostname | should beexactly  "Yli-ise"     } #Should   Begreaterthan judged whether the results were greater than the predetermined value context  "Should begreaterthan test" {    it  "Psversion is above 3"  {        $ psversiontable.psversion.major | should begreaterthan 3    }} #Should  beoftype determines whether the result type is a specified type context  "Should beoftype test" {    it  " Get-aduser type "{        get-aduser yli | should  beoftype microsoft.activedirectory.management.aduser    }} #Should   Exist determine if the file exists context  "should exist test" {    it  "C:\temp exist" {          "C:\Temp"  | should exist     }    &NBSP,} #Should  match  determine if the result matches a regular expression, &nbsp, case-insensitive context  "should match test" {    it  "Find email" {          "Jksjsjsjssdjs [email protected] hsosofs"  |  should match  "[a-z0-9!#\$%& ' *+/=?^_ ' {|} ~-]+(?:\. [a-z0-9!#\$%& ' *+/=?^_ ' {|} ~-]+) *@ (?: [A-z0-9] (?: [a-z0-9-]*[a-z0-9])? \.) +[a-z0-9] (?: [a-z0-9-]*[a-z0-9])? "     }    &NBSP,} #Should  Throw  Judge script  Whether the block result throws an exception context  "Should throw test"  {    It  "Get a  non-exist process "{             { get-process -name  "[email protected]#$%&"  -erroraction stop} | should  THROW   &NBSP}} #Should  BeNulorEmpty  determine if the result is empty context  "should  Benullorempty test "{    it " get something from tEst folder "{            get-childitem c : \TEMP | SHOULD NOT BENULLOREMPTY    }}}

Run the test file directly or execute it through Invoke-pester to see the results succeed

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This article is from the "Mapo Tofu" blog, please be sure to keep this source http://beanxyz.blog.51cto.com/5570417/1789850

PowerShell Pester Use-assertion