tests/functions/pipeline/Remove-PSFNull.Tests.ps1
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Describe "Remove-PSFNull Unit Tests" -Tag "CI", "Pipeline", "Unit" { # Catch any signature changes to force revisiting the command It "Should have the designed for parameters & sets" { (Get-Command Remove-PSFNull).ParameterSets.Name | Should -Be '__AllParameterSets' (Get-Command Remove-PSFNull).Parameters.Keys | Should -Be 'InputObject', 'AllowEmptyCollections', 'AllowEmptyStrings', 'Enumerate', 'Verbose', 'Debug', 'ErrorAction', 'WarningAction', 'InformationAction', 'ErrorVariable', 'WarningVariable', 'InformationVariable', 'OutVariable', 'OutBuffer', 'PipelineVariable' } It "Should allow only non-null values through" { 1, 2, 3, $null, 4 | Remove-PSFNull | Should -Be 1, 2, 3, 4 1, 2, 3, "", 4 | Remove-PSFNull | Should -Be 1, 2, 3, 4 1, 2, 3, @(), 4 | Remove-PSFNull | Should -Be 1, 2, 3, 4 } It "Should properly implement exceptions" { 1, $null, 2, "", 3, @(), 4 | Remove-PSFNull | Should -Be 1, 2, 3, 4 1, $null, 2, "", 3, @(), 4 | Remove-PSFNull -AllowEmptyStrings | Should -Be 1, 2, "", 3, 4 1, $null, 2, "", 3, @(), 4 | Remove-PSFNull -AllowEmptyCollections | Should -Be 1, 2, 3, @(), 4 1, $null, 2, "", 3, @(), 4 | Remove-PSFNull -AllowEmptyStrings -AllowEmptyCollections | Should -Be 1, 2, "", 3, @(), 4 } It "Should not enumerate objects unless asked to" { ( ,@(1, 2, 3) | Remove-PSFNull | Measure-Object).Count | Should -Be 1 ( ,@(1, 2, 3) | Remove-PSFNull -Enumerate | Measure-Object).Count | Should -Be 3 } } |