Added remove-variable pester tests
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src/pester-tests/Test-Remove-Variable.Tests.ps1
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src/pester-tests/Test-Remove-Variable.Tests.ps1
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# ensure the machine is in a clean state from the outset.
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Remove-Variable -Name var1 -ErrorAction SilentlyContinue -Force
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Describe "Test-Remove-Variable" {
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It "Should throw an error when a dollar sign is used in the variable name place" {
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New-Variable -Name var1 -Value 4
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Remove-Variable $var1 -ErrorAction SilentlyContinue | Should Throw
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}
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It "Should not throw error when used without the Name field, and named variable is properly specified and exists" {
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New-Variable -Name var1 -Value 4
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Remove-Variable var1
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$var1 | Should Be #nothing. it should be Nothing at all.
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}
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It "Should not throw error when used with the Name field, and named variable is specified and exists" {
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New-Variable -Name var1 -Value 2
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Remove-Variable -Name var1
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$var1 | Should Be #nothing. it should be Nothing at all.
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}
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It "Should throw error when used with Name field, and named variable does not exist" {
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Remove-Variable -Name nonexistantVariable -ErrorAction SilentlyContinue | Should Throw
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}
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It "Should be able to remove a variable using the rv alias" {
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New-Variable var1 -Value 2
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$var1 | Should Be 2
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rv -Name var1
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$var1 | Should Be #nothing. it should be Nothing at all.
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}
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It "Should be able to remove a set of variables using wildcard characters" {
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New-Variable tmpvar1 -Value "tempvalue"
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New-Variable tmpvar2 -Value 2
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New-Variable tmpmyvar1 -Value 234
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$tmpvar1 | Should Be "tempvalue"
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$tmpvar2 | Should Be 2
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$tmpmyvar1 | Should Be 234
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Remove-Variable -Name tmp*
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$tmpvar1 | Should Be #nothing. it should be Nothing at all.
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$tmpvar2 | Should Be #nothing. it should be Nothing at all.
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$tmpmyvar1 | Should Be #nothing. it should be Nothing at all.
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}
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It "Should be able to exclude a set of variables to remove using the Exclude switch" {
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New-Variable tmpvar1 -Value "tempvalue"
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New-Variable tmpvar2 -Value 2
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New-Variable tmpmyvar1 -Value 234
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$tmpvar1 | Should Be "tempvalue"
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$tmpvar2 | Should Be 2
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$tmpmyvar1 | Should Be 234
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Remove-Variable -Name tmp* -Exclude *my*
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$tmpvar1 | Should Be #nothing. it should be Nothing at all.
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$tmpvar2 | Should Be #nothing. it should be Nothing at all.
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$tmpmyvar1 | Should Be 234
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}
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It "Should be able to include a set of variables to remove using the Include switch" {
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New-Variable tmpvar1 -Value "tempvalue"
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New-Variable tmpvar2 -Value 2
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New-Variable tmpmyvar1 -Value 234
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New-Variable thevar -Value 1
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$tmpvar1 | Should Be "tempvalue"
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$tmpvar2 | Should Be 2
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$tmpmyvar1 | Should Be 234
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$thevar | Should Be 1
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Remove-Variable -Name tmp* -Include *my*
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$tmpvar1 | Should Be "tempvalue"
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$tmpvar2 | Should Be 2
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$tmpmyvar1 | Should Be #nothing. it should be Nothing at all.
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$thevar | should Be 1
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Remove-Variable tmpvar1
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Remove-Variable tmpvar2
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Remove-Variable thevar
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}
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It "Should throw an error when attempting to remove a read-only variable and the Force switch is not used" {
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New-Variable -Name var1 -Value 2 -Option ReadOnly
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Remove-Variable -Name var1 -ErrorAction SilentlyContinue | Should Throw
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$var1 | Should Be 2
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Remove-Variable -Name var1 -Force
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}
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It "Should not throw an error when attempting to remove a read-only variable and the Force switch is used" {
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New-Variable -Name var1 -Value 2 -Option ReadOnly
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Remove-Variable -Name var1 -Force
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$var1 | Should Be # Nothing. It should be nothing at all.
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}
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Context "Scope Tests" {
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It "Should be able to remove a global variable using the global switch" {
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New-Variable -Name var1 -Value "context" -Scope global
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Remove-Variable -Name var1 -Scope global
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$var1 | Should Be #Nothing.
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}
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It "Should not be able to clear a global variable using the local switch" {
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New-Variable -Name var1 -Value "context" -Scope global
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Remove-Variable -Name var1 -Scope local -ErrorAction SilentlyContinue | Should Throw
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$var1 | Should Be "context"
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Remove-Variable -Name var1 -Scope global
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$var1 | Should Be # Nothing
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}
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It "Should not be able to clear a global variable using the script switch" {
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New-Variable -Name var1 -Value "context" -Scope global
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Remove-Variable -Name var1 -Scope local -ErrorAction SilentlyContinue | Should Throw
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$var1 | Should Be "context"
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Remove-Variable -Name var1 -Scope global
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$var1 | Should Be # Nothing
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}
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It "Should be able to remove an item locally using the local switch" {
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New-Variable -Name var1 -Value "context" -Scope local
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Remove-Variable -Name var1 -Scope local -ErrorAction SilentlyContinue | Should Throw
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$var1 | Should Be # Nothing
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}
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It "Should be able to remove an item locally using the global switch" {
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New-Variable -Name var1 -Value "context" -Scope local
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Remove-Variable -Name var1 -Scope global -ErrorAction SilentlyContinue | Should Throw
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$var1 | Should Be "context"
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Remove-Variable -Name var1 -Scope local
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$var1 | Should Be # Nothing
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}
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It "Should be able to remove a local variable using the script scope switch" {
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New-Variable -Name var1 -Value "context" -Scope local
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Remove-Variable -Name var1 -Scope script -ErrorAction SilentlyContinue | Should Throw
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$var1 | Should Be "context"
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Remove-Variable -Name var1 -Scope local
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$var1 | Should Be # Nothing
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}
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It "Should be able to remove a script variable created using the script switch" {
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New-Variable -Name var1 -Value "context" -Scope script
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Remove-Variable -Name var1 -Scope script | Should Throw
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$var1 | Should Be # Nothing
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}
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It "Should be able to remove a global script variable that was created using the script scope switch" {
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New-Variable -Name var1 -Value "context" -Scope script
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Remove-Variable -Name var1 -Scope global -ErrorAction SilentlyContinue | Should Throw
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$var1 | Should Be # Nothing
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}
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}
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}
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