PowerShell-PowerShell/test/powershell/Modules/PSReadLine/PSReadLine.Tests.ps1

# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License.
Describe "PSReadLine" -tags "CI" {
    BeforeAll {
        if (Get-Module PSReadLine) {
            $originalEditMode = (Get-PSReadLineOption).EditMode
            Remove-Module PSReadLine
        }
    }

    It "Should import the module correctly" {
        Import-Module PSReadLine
        $module = Get-Module PSReadLine
        $module.Name | Should -BeExactly 'PSReadLine'
        $module.Version | Should -BeExactly '1.2'
    }

    It "Should use Emacs Bindings on Linux and macOS" -skip:$IsWindows {
        (Get-PSReadLineOption).EditMode | Should -BeExactly 'Emacs'
        (Get-PSReadlineKeyHandler | Where-Object { $_.Key -eq "Ctrl+A" }).Function | Should -BeExactly 'BeginningOfLine'
    }

    It "Should use Windows Bindings on Windows" -skip:(-not $IsWindows) {
        (Get-PSReadLineOption).EditMode | Should -BeExactly 'Windows'
        (Get-PSReadlineKeyHandler | Where-Object { $_.Key -eq "Ctrl+a" }).Function | Should -BeExactly 'SelectAll'
    }

    It "Should set the edit mode" {
        Set-PSReadlineOption -EditMode Windows
        (Get-PSReadlineKeyHandler | Where-Object { $_.Key -eq "Ctrl+A" }).Function | Should -BeExactly 'SelectAll'

        Set-PSReadlineOption -EditMode Emacs
        (Get-PSReadlineKeyHandler | Where-Object { $_.Key -eq "Ctrl+A" }).Function | Should -BeExactly 'BeginningOfLine'
    }

    It "Should allow custom bindings for plain keys" {
        Set-PSReadlineKeyHandler -Key '"' -Function SelfInsert
        (Get-PSReadLineKeyHandler | Where-Object { $_.Key -eq '"' }).Function | Should -BeExactly 'SelfInsert'
    }

    It "Should report Capitalized bindings correctly" {
        Set-PSReadlineOption -EditMode Emacs
        (Get-PSReadLineKeyHandler | Where-Object { $_.Key -ceq "Alt+b" }).Function | Should -BeExactly 'BackwardWord'
        (Get-PSReadLineKeyHandler | Where-Object { $_.Key -ceq "Alt+B" }).Function | Should -BeExactly 'SelectBackwardWord'
    }

    It "Should ignore case when using Function binding" {
        $lowerCaseFunctionName = "yank"
        Set-PSReadlineKeyHandler "Ctrl+F24" -Function $lowerCaseFunctionName
        (Get-PSReadlineKeyHandler | Where-Object { $_.Key -eq "Ctrl+F24"}).Function | Should -BeExactly "Yank"
    }

    AfterAll {
        Remove-Module PSReadLine

        if ($originalEditMode) {
            Import-Module PSReadLine
            Set-PSReadlineOption -EditMode $originalEditMode
        }
    }
}