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Merge pull request #860 from PowerShell/NewVariablePesterUnitTest
Add New-Variable Pester Unit test
This commit is contained in:
Andy Schwartzmeyer
@@ -1,185 +1,247 @@
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Describe "New-Variable" {
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$nl = [Environment]::NewLine
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It "Should create a new variable with no parameters" {
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{ New-Variable var1 } | Should Not Throw
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}
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It "Should be able to set variable name using the Name parameter" {
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{ New-Variable -Name var1 } | Should Not Throw
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}
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It "Should be able to assign a value to a variable using the value switch" {
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New-Variable var1 -Value 4
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$var1 | Should Be 4
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}
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It "Should be able to assign a value to a new variable without using the value switch" {
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New-Variable var1 "test"
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$var1 | Should Be "test"
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}
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It "Should assign a description to a new variable using the description switch" {
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New-Variable var1 100 -Description "Test Description"
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(Get-Variable var1).Description | Should Be "Test Description"
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}
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It "Should be able to be called with the nv alias" {
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{ nv var1 } | Should Not Throw
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{ nv var1 2 } | Should Not Throw
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}
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It "Should not be able to set the name of a new variable to that of an old variable within same scope when the Force switch is missing" {
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New-Variable var1
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(New-Variable var1 -ErrorAction SilentlyContinue) | Should Throw
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}
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It "Should change the value of an already existing variable using the Force switch" {
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New-Variable var1 -Value 1
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$var1 | Should Be 1
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New-Variable var1 -Value 2 -Force
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$var1 | Should Be 2
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$var1 | Should Not Be 1
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}
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It "Should be able to set the value of a variable by piped input" {
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$in = "value"
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$in | New-Variable -Name var1
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$var1 | Should Be $in
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}
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It "Should be able to pipe object properties to output using the PassThru switch" {
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$in = Set-Variable -Name testVar -Value "test" -Description "test description" -PassThru
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$output = $in | Format-List -Property Description | Out-String
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$output | Should Be "${nl}${nl}Description : test description${nl}${nl}${nl}${nl}"
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}
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It "Should be able to set the value using the value switch" {
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New-Variable -Name var1 -Value 2
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$var1 | Should Be 2
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}
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Context "Option tests" {
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BeforeEach {
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# verify that the test variable doesn't exist
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!!$var1 | Should Be $false
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}
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It "Should be able to use the options switch without error" {
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{ New-Variable -Name var1 -Value 2 -Option Unspecified } | Should Not Throw
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}
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It "Should default to none as the value for options" {
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New-Variable -Name var2 -Value 4 -PassThru| Format-List | Out-String | Should Match "Options : None"
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}
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It "Should be able to set ReadOnly option" {
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{ New-Variable -Name var1 -Value 2 -Option ReadOnly } | Should Not Throw
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}
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It "Should not be able to change variable created using the ReadOnly option when the Force switch is not used" {
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New-Variable -Name var1 -Value 1 -Option ReadOnly
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Set-Variable -Name var1 -Value 2 -ErrorAction SilentlyContinue
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$var1 | Should Not Be 2
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}
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It "Should be able to set a new variable to constant" {
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{ New-Variable -Name var1 -Option Constant } | Should Not Throw
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}
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It "Should not be able to change an existing variable to constant" {
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New-Variable -Name var1 -Value 1 -PassThru
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Set-Variable -Name var1 -Option Constant -ErrorAction SilentlyContinue
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$var1 | Format-List | Out-String | Should Not Match "Options : None"
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}
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It "Should not be able to delete a constant variable" {
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New-Variable -Name var1 -Value 2 -Option Constant
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Remove-Variable -Name var1 -ErrorAction SilentlyContinue
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!!$var1 | Should Be $true
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$var1 | Should Be 2
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}
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It "Should not be able to change a constant variable" {
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New-Variable -Name var1 -Value 1 -Option Constant
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Set-Variable -Name var1 -Value 2 -ErrorAction SilentlyContinue
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$var1 | Should Not Be 2
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}
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It "Should be able to create a variable as private without error" {
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{ New-Variable -Name var1 -Option Private } | Should Not Throw
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}
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It "Should be able to see the value of a private variable when within scope" {
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New-Variable -Name var1 -Value 100 -Option Private
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$var1 | Should Be 100
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}
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It "Should not be able to see the value of a private variable when out of scope" {
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{
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New-Variable -Name var1 -Value 1 -Option Private
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}
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$var1 | Should Be # Nothing, since it's not defined in scope
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}
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It "Should be able to use the AllScope switch without error" {
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{ New-Variable -Name var1 -Option AllScope } | Should Not Throw
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}
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It "Should be able to see variable created using the AllScope switch in a child scope" {
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New-Variable -Name var1 -Value 1 -Option AllScope
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function myFunction {
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if ( $var1 -eq 1 ) {
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$var1 = 2
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}
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}
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myFunction
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$var1 | Should Be 2
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}
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}
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Context "Scope Tests" {
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It "Should be able to create a global scope variable using the global switch" {
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{ New-Variable globalVar -Value 1 -Scope global -Force } | Should Not Throw
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}
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It "Should be able to create a local scope variable using the local switch" {
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{ New-Variable localVar -Value 1 -Scope local -Force } | Should Not Throw
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}
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It "Should be able to create a script scope variable using the script switch" {
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{ New-Variable scriptVar -Value 1 -Scope script -Force } | Should Not Throw
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}
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}
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}
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Describe "New-Variable DRT Unit Tests" -Tags DRT{
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It "New-Variable variable with description should works"{
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New-Variable foo bar -description "my description"
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$var1=Get-Variable -Name foo
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$var1.Name|Should Be "foo"
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$var1.Value|Should Be "bar"
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$var1.Options|Should Be "None"
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$var1.Description|Should Be "my description"
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}
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It "New-Variable variable with option should works"{
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New-Variable foo bar -option Constant
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$var1=Get-Variable -Name foo
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$var1.Name|Should Be "foo"
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$var1.Value|Should Be "bar"
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$var1.Options|Should Be "Constant"
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$var1.Description|Should Be ""
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}
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It "New-Variable variable twice should throw Exception"{
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New-Variable foo bogus
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try {
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New-Variable foo bar -EA Stop
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Throw "Execution OK"
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}
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catch {
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$_.CategoryInfo| Should Match "SessionStateException"
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$_.FullyQualifiedErrorId | Should Be "VariableAlreadyExists,Microsoft.PowerShell.Commands.NewVariableCommand"
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}
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New-Variable foo bar -Force -PassThru
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$var1=Get-Variable -Name foo
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$var1.Name|Should Be "foo"
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$var1.Value|Should Be "bar"
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$var1.Options|Should Be "None"
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$var1.Description|Should Be ""
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}
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It "New-Variable ReadOnly variable twice should throw Exception"{
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New-Variable foo bogus -option ReadOnly
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try {
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New-Variable foo bar -EA Stop
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Throw "Execution OK"
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}
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catch {
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$_.CategoryInfo| Should Match "SessionStateException"
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$_.FullyQualifiedErrorId | Should Be "VariableAlreadyExists,Microsoft.PowerShell.Commands.NewVariableCommand"
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}
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New-Variable foo bar -Force -PassThru
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$var1=Get-Variable -Name foo
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$var1.Name|Should Be "foo"
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$var1.Value|Should Be "bar"
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$var1.Options|Should Be "None"
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$var1.Description|Should Be ""
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}
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}
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Describe "New-Variable" {
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It "Should create a new variable with no parameters" {
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{ New-Variable var1 } | Should Not Throw
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}
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It "Should be able to set variable name using the Name parameter" {
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{ New-Variable -Name var1 } | Should Not Throw
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}
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It "Should be able to assign a value to a variable using the value switch" {
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New-Variable var1 -Value 4
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$var1 | Should Be 4
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}
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It "Should be able to assign a value to a new variable without using the value switch" {
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New-Variable var1 "test"
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$var1 | Should Be "test"
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}
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It "Should assign a description to a new variable using the description switch" {
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New-Variable var1 100 -Description "Test Description"
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(Get-Variable var1).Description | Should Be "Test Description"
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}
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It "Should be able to be called with the nv alias" {
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nv var1
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$var1 | Should BeNullOrEmpty
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nv var2 2
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$var2 | Should Be 2
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}
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It "Should not be able to set the name of a new variable to that of an old variable within same scope when the Force switch is missing" {
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New-Variable var1
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(New-Variable var1 -ErrorAction SilentlyContinue) | Should Throw
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}
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It "Should change the value of an already existing variable using the Force switch" {
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New-Variable var1 -Value 1
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$var1 | Should Be 1
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New-Variable var1 -Value 2 -Force
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$var1 | Should Be 2
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$var1 | Should Not Be 1
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}
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It "Should be able to set the value of a variable by piped input" {
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$in = "value"
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$in | New-Variable -Name var1
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$var1 | Should Be $in
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}
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It "Should be able to pipe object properties to output using the PassThru switch" {
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$in = Set-Variable -Name testVar -Value "test" -Description "test description" -PassThru
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$in.Description | Should Be "test description"
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}
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It "Should be able to set the value using the value switch" {
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New-Variable -Name var1 -Value 2
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$var1 | Should Be 2
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}
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Context "Option tests" {
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It "Should be able to use the options switch without error" {
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{ New-Variable -Name var1 -Value 2 -Option Unspecified } | Should Not Throw
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}
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It "Should default to none as the value for options" {
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(new-variable -name var2 -value 4 -passthru).Options | should be "None"
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}
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It "Should be able to set ReadOnly option" {
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{ New-Variable -Name var1 -Value 2 -Option ReadOnly } | Should Not Throw
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}
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It "Should not be able to change variable created using the ReadOnly option when the Force switch is not used" {
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New-Variable -Name var1 -Value 1 -Option ReadOnly
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Set-Variable -Name var1 -Value 2 -ErrorAction SilentlyContinue
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$var1 | Should Not Be 2
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}
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It "Should be able to set a new variable to constant" {
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{ New-Variable -Name var1 -Option Constant } | Should Not Throw
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}
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It "Should not be able to change an existing variable to constant" {
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New-Variable -Name var1 -Value 1 -PassThru
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Set-Variable -Name var1 -Option Constant -ErrorAction SilentlyContinue
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(Get-Variable var1).Options | should be "None"
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}
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It "Should not be able to delete a constant variable" {
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New-Variable -Name var1 -Value 2 -Option Constant
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Remove-Variable -Name var1 -ErrorAction SilentlyContinue
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$var1 | Should Be 2
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}
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It "Should not be able to change a constant variable" {
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New-Variable -Name var1 -Value 1 -Option Constant
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Set-Variable -Name var1 -Value 2 -ErrorAction SilentlyContinue
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$var1 | Should Not Be 2
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}
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It "Should be able to create a variable as private without error" {
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{ New-Variable -Name var1 -Option Private } | Should Not Throw
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}
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It "Should be able to see the value of a private variable when within scope" {
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New-Variable -Name var1 -Value 100 -Option Private
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$var1 | Should Be 100
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}
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It "Should not be able to see the value of a private variable when out of scope" {
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{New-Variable -Name var1 -Value 1 -Option Private}| Should Not Throw
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$var1 | Should BeNullOrEmpty
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}
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It "Should be able to use the AllScope switch without error" {
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{ New-Variable -Name var1 -Option AllScope } | Should Not Throw
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}
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It "Should be able to see variable created using the AllScope switch in a child scope" {
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New-Variable -Name var1 -Value 1 -Option AllScope
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&{ $var1 = 2 }
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$var1 | Should Be 2
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}
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}
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Context "Scope Tests" {
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BeforeAll {
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if ( get-variable -scope global -name globalVar1 -ea SilentlyContinue )
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{
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Remove-Variable -scope global -name globalVar1
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}
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if ( get-variable -scope script -name scriptvar -ea SilentlyContinue )
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{
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remove-variable -scope script -name scriptvar
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}
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# no check for local scope variable as that scope is created with test invocation
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}
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AfterAll {
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if ( get-variable -scope global -name globalVar1 )
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{
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Remove-Variable -scope global -name globalVar1
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}
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if ( get-variable -scope script -name scriptvar )
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{
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remove-variable -scope script -name scriptvar
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}
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}
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It "Should be able to create a global scope variable using the global switch" {
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new-variable -Scope global -name globalvar1 -value 1
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get-variable -Scope global -name globalVar1 -ValueOnly | Should be 1
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}
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It "Should be able to create a local scope variable using the local switch" {
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Get-Variable -scope local -name localvar -ValueOnly -ea silentlycontinue | should BeNullOrEmpty
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New-Variable -Scope local -Name localVar -value 10
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get-variable -scope local -name localvar -ValueOnly | Should be 10
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}
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It "Should be able to create a script scope variable using the script switch" {
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new-variable -scope script -name scriptvar -value 100
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get-variable -scope script -name scriptvar -ValueOnly | should be 100
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}
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}
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}
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