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Add tests for StaticParameter to improve coverage (PowerShell#4779)
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‎test/powershell/engine/ParameterBinding/StaticParameterBinder.Tests.ps1‎

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using namespace System.Management.Automation.Language
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Describe "StaticParameterBinder tests" -Tags "CI" {
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BeforeAll {
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$testCases = @(
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@{
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Source = 'Get-Alias abc'
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Description = 'string constant value'
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BoundParametersCount = 1
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ExceptionCount = 0
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ValidateScript = {
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param ($result)
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$result.BoundParameters.Name.ConstantValue | Should Be 'abc'
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}
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},
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@{
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Source = 'Get-Alias {abc}'
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Description = 'script block value'
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BoundParametersCount = 1
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ExceptionCount = 0
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ValidateScript = {
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param ($result)
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$result.BoundParameters.Name.Value | Should BeOfType ([ScriptBlockExpressionAst].FullName)
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$result.BoundParameters.Name.Value.Extent.Text | Should Be '{abc}'
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}
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},
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@{
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Source = 'Get-Alias -Path abc'
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Description = 'parameter -path not found'
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BoundParametersCount = 0
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ExceptionCount = 1
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ValidateScript = {
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param ($result)
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$result.BindingExceptions.Path.CommandElement.Extent.Text | Should Be '-Path'
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$result.BindingExceptions.Path.BindingException.ErrorId | Should Be 'NamedParameterNotFound'
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}
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},
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@{
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Source = 'Get-Alias -Path -Name:abc'
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Description = 'parameter -name found while -path not found'
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BoundParametersCount = 1
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ExceptionCount = 1
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ValidateScript = {
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param ($result)
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$result.BoundParameters.Name.ConstantValue | Should Be 'abc'
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$result.BindingExceptions.Path.CommandElement.Extent.Text | Should Be '-Path'
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$result.BindingExceptions.Path.BindingException.ErrorId | Should Be 'NamedParameterNotFound'
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}
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},
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@{
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Source = 'Get-Alias -Name -abc'
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Description = 'parameter -abc should be used as value'
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BoundParametersCount = 1
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ExceptionCount = 0
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ValidateScript = {
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param ($result)
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$result.BoundParameters.Name.Value | Should BeOfType ([CommandParameterAst].FullName)
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$result.BoundParameters.Name.Value.Extent.Text | Should Be '-abc'
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}
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},
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@{
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Source = 'Get-Alias aa bb'
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Description = 'unbound positional parameter bb'
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BoundParametersCount = 1
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ExceptionCount = 1
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ValidateScript = {
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param ($result)
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$result.BoundParameters.Name.ConstantValue | Should Be 'aa'
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$result.BindingExceptions.bb.BindingException.ErrorId | Should Be 'PositionalParameterNotFound'
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}
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},
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@{
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Source = 'Get-Alias aa,bb,cc'
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Description = 'array argument'
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BoundParametersCount = 1
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ExceptionCount = 0
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ValidateScript = {
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param ($result)
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$result.BoundParameters.Name.Value | Should BeOfType ([ArrayLiteralAst].FullName)
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$result.BoundParameters.Name.Value.Extent.Text | Should Be 'aa,bb,cc'
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}
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},
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@{
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Source = 'Get-ChildItem -Name abc -rec'
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Description = 'switch params and positional param'
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BoundParametersCount = 3
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ExceptionCount = 0
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ValidateScript = {
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param ($result)
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$result.BoundParameters.Name.ConstantValue | Should Be $true
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$result.BoundParameters.Recurse.ConstantValue | Should Be $true
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$result.BoundParameters.Path.ConstantValue | Should Be 'abc'
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}
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},
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@{
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Source = 'Get-ChildItem -Name -f'
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Description = 'switch parameter -name found while ambiguous parameter -f'
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BoundParametersCount = 1
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ExceptionCount = 1
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ValidateScript = {
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param ($result)
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$result.BoundParameters.Name.ConstantValue | Should Be $true
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$result.BindingExceptions.f.CommandElement.Extent.Text | Should Be '-f'
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$result.BindingExceptions.f.BindingException.ErrorId | Should Be 'AmbiguousParameter'
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}
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},
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@{
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Source = 'Get-ChildItem -Path -f'
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Description = 'non-switch parameter -path followed by ambiguous parameter -f'
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BoundParametersCount = 0
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ExceptionCount = 1
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ValidateScript = {
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param ($result)
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$result.BindingExceptions.f.CommandElement.Extent.Text | Should Be '-f'
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$result.BindingExceptions.f.BindingException.ErrorId | Should Be 'AmbiguousParameter'
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}
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}
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)
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}
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It "<Description>: '<Source>'" -TestCases $testCases {
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param ($Source, $BoundParametersCount, $ExceptionCount, $ValidateScript)
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$ast = [Parser]::ParseInput($Source, [ref]$null, [ref]$null)
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$cmdAst = $ast.Find({$args[0] -is [CommandAst]}, $false)
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$result = [StaticParameterBinder]::BindCommand($cmdAst)
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$result.BoundParameters.Count | Should Be $BoundParametersCount
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$result.BindingExceptions.Count | Should Be $ExceptionCount
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. $ValidateScript $result
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}
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}

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