PowerShell7/test/powershell/New-Variable.Tests.ps1
2016-04-19 16:00:39 -07:00

243 lines
6.9 KiB
PowerShell

Describe "New-Variable DRT Unit Tests" -Tags DRT{
It "New-Variable variable with description should works"{
New-Variable foo bar -description "my description"
$var1=Get-Variable -Name foo
$var1.Name|Should Be "foo"
$var1.Value|Should Be "bar"
$var1.Options|Should Be "None"
$var1.Description|Should Be "my description"
}
It "New-Variable variable with option should works"{
New-Variable foo bar -option Constant
$var1=Get-Variable -Name foo
$var1.Name|Should Be "foo"
$var1.Value|Should Be "bar"
$var1.Options|Should Be "Constant"
$var1.Description|Should Be ""
}
It "New-Variable variable twice should throw Exception"{
New-Variable foo bogus
try {
New-Variable foo bar -EA Stop
Throw "Execution OK"
}
catch {
$_.CategoryInfo| Should Match "SessionStateException"
$_.FullyQualifiedErrorId | Should Be "VariableAlreadyExists,Microsoft.PowerShell.Commands.NewVariableCommand"
}
New-Variable foo bar -Force -PassThru
$var1=Get-Variable -Name foo
$var1.Name|Should Be "foo"
$var1.Value|Should Be "bar"
$var1.Options|Should Be "None"
$var1.Description|Should Be ""
}
It "New-Variable ReadOnly variable twice should throw Exception"{
New-Variable foo bogus -option ReadOnly
try {
New-Variable foo bar -EA Stop
Throw "Execution OK"
}
catch {
$_.CategoryInfo| Should Match "SessionStateException"
$_.FullyQualifiedErrorId | Should Be "VariableAlreadyExists,Microsoft.PowerShell.Commands.NewVariableCommand"
}
New-Variable foo bar -Force -PassThru
$var1=Get-Variable -Name foo
$var1.Name|Should Be "foo"
$var1.Value|Should Be "bar"
$var1.Options|Should Be "None"
$var1.Description|Should Be ""
}
}
Describe "New-Variable" {
It "Should create a new variable with no parameters" {
{ New-Variable var1 } | Should Not Throw
}
It "Should be able to set variable name using the Name parameter" {
{ New-Variable -Name var1 } | Should Not Throw
}
It "Should be able to assign a value to a variable using the value switch" {
New-Variable var1 -Value 4
$var1 | Should Be 4
}
It "Should be able to assign a value to a new variable without using the value switch" {
New-Variable var1 "test"
$var1 | Should Be "test"
}
It "Should assign a description to a new variable using the description switch" {
New-Variable var1 100 -Description "Test Description"
(Get-Variable var1).Description | Should Be "Test Description"
}
It "Should be able to be called with the nv alias" {
{ nv var1 } | Should Not Throw
{ nv var1 2 } | Should Not Throw
}
It "Should not be able to set the name of a new variable to that of an old variable within same scope when the Force switch is missing" {
New-Variable var1
(New-Variable var1 -ErrorAction SilentlyContinue) | Should Throw
}
It "Should change the value of an already existing variable using the Force switch" {
New-Variable var1 -Value 1
$var1 | Should Be 1
New-Variable var1 -Value 2 -Force
$var1 | Should Be 2
$var1 | Should Not Be 1
}
It "Should be able to set the value of a variable by piped input" {
$in = "value"
$in | New-Variable -Name var1
$var1 | Should Be $in
}
It "Should be able to pipe object properties to output using the PassThru switch" {
$in = Set-Variable -Name testVar -Value "test" -Description "test description" -PassThru
$output = $in | Format-List -Property Description | Out-String
$output.Trim() | Should Be "Description : test description"
}
It "Should be able to set the value using the value switch" {
New-Variable -Name var1 -Value 2
$var1 | Should Be 2
}
Context "Option tests" {
BeforeEach {
# verify that the test variable doesn't exist
!!$var1 | Should Be $false
}
It "Should be able to use the options switch without error" {
{ New-Variable -Name var1 -Value 2 -Option Unspecified } | Should Not Throw
}
It "Should default to none as the value for options" {
New-Variable -Name var2 -Value 4 -PassThru| Format-List | Out-String | Should Match "Options : None"
}
It "Should be able to set ReadOnly option" {
{ New-Variable -Name var1 -Value 2 -Option ReadOnly } | Should Not Throw
}
It "Should not be able to change variable created using the ReadOnly option when the Force switch is not used" {
New-Variable -Name var1 -Value 1 -Option ReadOnly
Set-Variable -Name var1 -Value 2 -ErrorAction SilentlyContinue
$var1 | Should Not Be 2
}
It "Should be able to set a new variable to constant" {
{ New-Variable -Name var1 -Option Constant } | Should Not Throw
}
It "Should not be able to change an existing variable to constant" {
New-Variable -Name var1 -Value 1 -PassThru
Set-Variable -Name var1 -Option Constant -ErrorAction SilentlyContinue
$var1 | Format-List | Out-String | Should Not Match "Options : None"
}
It "Should not be able to delete a constant variable" {
New-Variable -Name var1 -Value 2 -Option Constant
Remove-Variable -Name var1 -ErrorAction SilentlyContinue
!!$var1 | Should Be $true
$var1 | Should Be 2
}
It "Should not be able to change a constant variable" {
New-Variable -Name var1 -Value 1 -Option Constant
Set-Variable -Name var1 -Value 2 -ErrorAction SilentlyContinue
$var1 | Should Not Be 2
}
It "Should be able to create a variable as private without error" {
{ New-Variable -Name var1 -Option Private } | Should Not Throw
}
It "Should be able to see the value of a private variable when within scope" {
New-Variable -Name var1 -Value 100 -Option Private
$var1 | Should Be 100
}
It "Should not be able to see the value of a private variable when out of scope" {
{
New-Variable -Name var1 -Value 1 -Option Private
}
$var1 | Should Be # Nothing, since it's not defined in scope
}
It "Should be able to use the AllScope switch without error" {
{ New-Variable -Name var1 -Option AllScope } | Should Not Throw
}
It "Should be able to see variable created using the AllScope switch in a child scope" {
New-Variable -Name var1 -Value 1 -Option AllScope
function myFunction {
if ( $var1 -eq 1 ) {
$var1 = 2
}
}
myFunction
$var1 | Should Be 2
}
}
Context "Scope Tests" {
It "Should be able to create a global scope variable using the global switch" {
{ New-Variable globalVar -Value 1 -Scope global -Force } | Should Not Throw
}
It "Should be able to create a local scope variable using the local switch" {
{ New-Variable localVar -Value 1 -Scope local -Force } | Should Not Throw
}
It "Should be able to create a script scope variable using the script switch" {
{ New-Variable scriptVar -Value 1 -Scope script -Force } | Should Not Throw
}
}
}