Koans/Introduction/AboutBooleans.Koans.ps1
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using module PSKoans [Koan(Position = 102)] param() <# Booleans Booleans in PowerShell are either $true or $false, 1 or 0, on or off. They allow us to represent a logical, binary, state. Effectively, they represent the state of a single bit of data. For example: | "Can I stop this service?" The answer is yes or no, True or False. One example of a boolean property would be the Responding property on a System.Diagnostics.Process object (which is the output from Get-Process). This property can only show whether the process is responding (True) or not (False). Check for yourself by running the following code: Get-Process | Get-Member Then scroll down till you see the "Responding" property: Responding Property bool Responding {get;} #> Describe "Booleans" { # Using only booleans, either $true or $false, fill in the blanks below. It '( 1 -gt 2 ) is either true or false' { $____ | Should -Be ( 1 -gt 2 ) -Because '1 is not greater than 2' } It '( 1 -lt 2 ) is either true or false' { $____ | Should -Be ( 1 -lt 2 ) -Because '1 is less than 2' } It '( 10 -lt 20 ) is either true or false' { $____ | Should -Be ( 10 -lt 20 ) -Because '10 is less than 20' } It '( 10 -gt 20 ) is either true or false' { $____ | Should -Be ( 10 -gt 20 ) -Because 'The lesser is not greater' } It '( 3 -eq 3 ) is either true or false' { $____ | Should -Be ( 3 -eq 3 ) -Because 'A mirror reflects true' } It '( 100 -lt 1 ) is either true or false' { $____ | Should -Be ( 100 -lt 1 ) -Because '100 is not less than 1' } } |