tests/application.Tests.ps1
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& (Join-Path $PSScriptRoot '_setup.ps1') 'application' Describe 'Application State' { It 'can save and get state using ID' { $Id = 'pester-test' $Value = (New-Guid).Guid $State = @{ Data = @{ Value = $Value }} $Path = $State | Save-State $Id $Expected = Get-State $Id $Expected.Id | Should -Be $Id $Expected.Data.Value | Should -Be $Value Remove-Item $Path } It 'can save and get state using path' { $Path = Join-Path $TestDrive 'state.xml' $Id = (New-Guid).Guid $Value = (New-Guid).Guid $State = @{ Id = $Id; Data = @{ Value = $Value }} $State | Save-State -Path $Path $Expected = Get-State -Path $Path $Expected.Id | Should -Be $Id $Expected.Data.Value | Should -Be $Value Remove-Item $Path } It 'can test save using -WhatIf switch' { Mock Write-Verbose {} $Path = Join-Path $TestDrive 'test.xml' @{ Data = 42 } | Save-State -Path $Path -WhatIf (Test-Path $Path) | Should -BeFalse } } Describe 'ConvertTo-PowershellSyntax' { It 'can act as pass-thru for normal strings' { $Expected = 'normal string with not mustache templates' $Expected | ConvertTo-PowershellSyntax | Should -Be $Expected } It 'can convert strings with single mustache template' { $InputString = 'Hello {{ world }}' $Expected = 'Hello $($Data.world)' $InputString | ConvertTo-PowershellSyntax | Should -Be $Expected } It 'can convert strings with multiple mustache templates without regard to spaces' { $Expected = '$($Data.hello) $($Data.world)' '{{ hello }} {{ world }}' | ConvertTo-PowershellSyntax | Should -Be $Expected '{{ hello }} {{ world}}' | ConvertTo-PowershellSyntax | Should -Be $Expected '{{hello }} {{world}}' | ConvertTo-PowershellSyntax | Should -Be $Expected } It 'will not convert mustache helper templates' { $Expected = 'The sky is {{#blue blue }}' $Expected | ConvertTo-PowershellSyntax | Should -Be $Expected $Expected = '{{#red greet }}, my name $($Data.foo) $($Data.foo) is $($Data.name)' '{{#red greet }}, my name {{foo }} {{foo}} is {{ name }}' | ConvertTo-PowershellSyntax | Should -Be $Expected '{{#red Red}} {{#blue Blue}}' | ConvertTo-PowershellSyntax | Should -Be '{{#red Red}} {{#blue Blue}}' } It 'supports template variables within mustache helper templates' { '{{#green Hello}} {{#red {{ name }}}}' | ConvertTo-PowershellSyntax | Should -Be '{{#green Hello}} {{#red $($Data.name)}}' '{{#green Hello}} {{#red {{ name }} }}' | ConvertTo-PowershellSyntax | Should -Be '{{#green Hello}} {{#red $($Data.name) }}' '{{#green Hello}} {{#red {{ foo }}{{ bar }}}}' | ConvertTo-PowershellSyntax | Should -Be '{{#green Hello}} {{#red $($Data.foo)$($Data.bar)}}' '{{#green Hello}} {{#red {{foo}}{{bar}}}}' | ConvertTo-PowershellSyntax | Should -Be '{{#green Hello}} {{#red $($Data.foo)$($Data.bar)}}' '{{#green Hello}} {{#red {{ a }} b {{ c }} }}' | ConvertTo-PowershellSyntax | Should -Be '{{#green Hello}} {{#red $($Data.a) b $($Data.c) }}' '{{#green Hello}} {{#red {{a}}b{{c}}}}' | ConvertTo-PowershellSyntax | Should -Be '{{#green Hello}} {{#red $($Data.a)b$($Data.c)}}' '{{#green Hello}} {{#red {{ a }} b {{ c }} d}}' | ConvertTo-PowershellSyntax | Should -Be '{{#green Hello}} {{#red $($Data.a) b $($Data.c) d}}' '{{#green Hello}} {{#red {{a}}b{{c}}d}}' | ConvertTo-PowershellSyntax | Should -Be '{{#green Hello}} {{#red $($Data.a)b$($Data.c)d}}' } } Describe 'Invoke-RunApplication' { It 'can pass state to Init/Loop functions and execute Loop one time' { $Script:Count = 0 $Init = { $State = $Args[0] $State.Id.Length | Should -Be 36 $State.Data = 'hello world' $Script:Count++ } $Loop = { $State = $Args[0] $State.Data | Should -Be 'hello world' $Script:Count++ } Invoke-RunApplication $Init $Loop -SingleRun $Script:Count | Should -Be 2 } It 'can persist state with -Id switch and clear state with -ClearState switch' { # First run with initial state passed to Invoke-RunApplication $Script:Count = 0 $Script:Value = (New-Guid).Guid $InitialState = @{ Data = @{ Value = $Script:Value }} $Init = { $Script:Count++ } $Loop = { $State = $Args[0] $State | Save-State $State.Id | Out-Null $Script:Count++ } $Script:ApplicationId = Invoke-RunApplication $Init $Loop $InitialState -SingleRun $Script:Count | Should -Be 2 # Second run that loads state with Get-State $Init = { $State = $Args[0] $State.Id | Should -Be $Script:ApplicationId $State.Data.Value | Should -Be $Script:Value $Script:Count++ } $Loop = { $State = $Args[0] $State.Id | Should -Be $Script:ApplicationId $State.Data.Value | Should -Be $Script:Value $Script:Count++ } Invoke-RunApplication $Init $Loop -SingleRun -Id $Script:ApplicationId $Script:Count | Should -Be 4 # Third run that should clear state $Init = { $State = $Args[0] $State.Id | Should -Be $Script:ApplicationId $State.Data.Value | Should -BeNullOrEmpty $Script:Count++ } $Loop = { $Script:Count++ } $TempRoot = if ($IsLinux) { '/tmp' } else { $Env:temp } $Path = Join-Path $TempRoot "state-$Script:ApplicationId.xml" (Test-Path $Path) | Should -BeTrue Invoke-RunApplication $Init $Loop -SingleRun -Id $Script:ApplicationId -ClearState (Test-Path $Path) | Should -BeFalse $Script:Count | Should -Be 6 } It 'can accept initial state value' { $Script:Count = 0 $Script:Value = (New-Guid).Guid $Init = { $State = $Args[0] $State.Id.Length | Should -Be 36 $State.Data.Value | Should -Be $Script:Value $Script:Count++ } $Loop = { $State = $Args[0] $State.Data.Value | Should -Be $Script:Value $Script:Count++ } $InitialState = @{ Data = @{ Value = $Script:Value }} Invoke-RunApplication $Init $Loop $InitialState -SingleRun $Script:Count | Should -Be 2 } } Describe 'New-ApplicationTemplate' { It 'can interpolate values into template string' { New-ApplicationTemplate | Should -Match '#Requires -Modules pwsh-prelude' New-ApplicationTemplate | Should -Match '\$Init = {' New-ApplicationTemplate | Should -match '{{#green My-App}}' New-ApplicationTemplate | Should -Match '\$Init \$Loop \$InitialState' New-ApplicationTemplate | Should -not -Match ' \$State = {' } } Describe 'New-Template' { Context 'when passed an empty object' { $Script:Expected = '<div>Hello </div>' It 'can return function that accepts positional parameter' { $Function:render = New-Template '<div>Hello {{ name }}</div>' render @{} | Should -Be $Expected } It 'can return function when instantiated as function variable' { $Function:render = New-Template -Template '<div>Hello {{ name }}</div>' render @{} | Should -Be $Expected } It 'can return function when instantiated as normal variable' { $RenderVariable = New-Template -Template '<div>Hello {{ name }}</div>' & $RenderVariable @{} | Should -Be $Expected } It 'can support default values' { $RenderVariable = New-Template -Template '<div>Hello {{ name }}</div>' -DefaultValues @{ name = 'Default' } & $RenderVariable | Should -Be '<div>Hello Default</div>' & $RenderVariable @{ name = 'Not Default' } | Should -Be '<div>Hello Not Default</div>' } } It 'can return a string when passed -Data paramter' { 'Hello {{ name }}' | New-Template -Data @{ name = 'World' } | Should -Be 'Hello World' '{{#green Hello}} {{ name }}' | New-Template -Data @{ name = 'World' } | Should -Be '{{#green Hello}} World' } It 'can create function from template string using mustache notation' { $Expected = '<div>Hello World!</div>' $Function:render = New-Template '<div>Hello {{ name }}!</div>' render @{ name = 'World' } | Should -Be $Expected @{ name = 'World' } | render | Should -Be $Expected } It 'can create function from template string using Powershell syntax' { $Expected = '<div>Hello World!</div>' $Function:render = New-Template '<div>Hello $($Data.name)!</div>' render @{ name = 'World' } | Should -Be $Expected @{ name = 'World' } | render | Should -Be $Expected } It 'can be nested within other templates' { $Expected = '<section> <h1>Title</h1> <div>Hello World!</div> </section>' $Div = New-Template -Template '<div>{{ text }}</div>' $Section = New-Template "<section> <h1>{{ title }}</h1> $(& $Div @{text = 'Hello World!'}) </section>" & $Section @{ title = 'Title' } | Should -Be $Expected } It 'can be nested within other templates (with Powershell syntax)' { $Expected = '<section> <h1>Title</h1> <div>Hello World!</div> </section>' $Div = New-Template -Template '<div>{{ text }}</div>' $Section = New-Template "<section> <h1>`$(`$Data.title)</h1> $(& $Div @{text = 'Hello World!'}) </section>" & $Section @{ title = 'Title' } | Should -Be $Expected } It 'can return pass-thru function that does no string interpolation' { $Function:render = '{{#green Hello}} {{ name }}' | New-Template render -Data @{ name = 'Jason' } | Should -Be '{{#green Hello}} Jason' render -Data @{ name = 'Jason' } -PassThru | Should -Be '{{#green Hello}} {{ name }}' } } Describe 'Remove-Indent' { It 'can handle empty strings' { '' | Remove-Indent | Should -BeNullOrEmpty '' | Remove-Indent -Size 0 | Should -Be '' } It 'can remove leading spaces from single-line strings' { ' foobar' | Remove-Indent | Should -Be 'foobar' ' foobar' | Remove-Indent -Size 5 | Should -Be 'foobar' 'foobar' | Remove-Indent -Size 0 | Should -Be 'foobar' } It 'can remove leading spaces from multi-line strings' { "`n foo`n bar`n" | Remove-Indent | Should -Be "`nfoo`nbar" "`n foo`n bar`n" | Remove-Indent -Size 4 | Should -Be "`nfoo`nbar" } It 'can process an array of strings' { ' foobar',"`n foo`n bar`n" | Remove-Indent | Should -Be 'foobar',"`nfoo`nbar" } } |