#pester tests for Test-Expression

Import-Module $PSScriptRoot\..\functions\Test-Expression.ps1 -force

Describe "Test-Expression" {

It "Should have an alias" {

(Get-Alias tex).ResolvedCommand.Name | Should Be "Test-Expression"

}

It "Should do a single test" {

$result = Test-Expression -expression {1..50}

$result.Tests | Should Be 1

$result.TestInterval | Should be 500

$result.AverageMS | Should BeGreaterThan 0

}

It "Should allow setting an interval" {

$result = Test-Expression -expression {1..50} -interval .1

$result.TestInterval | Should Be 100

}

It "Should allow setting a random interval" {

$result = Test-Expression -expression {1..50} -randomMinimum .1 -randomMaximum .5 -count 2

$result.TestInterval | Should Be "Random"

}

It "Should allow for multiple tests" {

$result = Test-Expression -expression {1..50} -count 5 -interval .1

$result.Tests | Should Be 5

$result.TrimmedMS | Should BeGreaterThan 0

}

It "Should accept scriptblock arguments" {

$sb = {Param([int]$x,[int]$y) $x..$y}

$result = Test-Expression -expression $sb -argument 1,100

$result.Tests | Should Be 1

}

It "Should include the expression when asked" {

$result = Test-Expression -expression {1..50} -IncludeExpression

$result.Expression.GetType().Name | Should Be "ScriptBlock"

$result.Expression.ToString() | Should Be "1..50"

}

} #Describe