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‎.github/workflows/release.yml

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name: Publish Module
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on:
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workflow_dispatch:
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jobs:
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publish-module:
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name: Publish Module
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uses: PowerShellLibrary/.github/.github/workflows/publish-module.yml@master
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secrets: inherit
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‎.github/workflows/test.yml

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name: Invoke Pester Tests
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on:
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workflow_dispatch:
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push:
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branches:
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- master
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jobs:
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invoke-pester:
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uses: PowerShellLibrary/.github/.github/workflows/invoke-pester.yml@master

‎LICENSE

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MIT License
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Copyright (c) 2025 Alan Płócieniak
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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

‎README.md

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# CRX
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Module for downloading CRX (extension package) for Chromium-based browsers.

‎src/CRX.psd1

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@{
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RootModule = 'CRX.psm1'
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ModuleVersion = '0.1.0'
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GUID = 'b5433b6c-b423-4049-8c5e-b3a50566fcf2'
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Author = 'Alan Plocieniak'
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CompanyName = 'Alan Plocieniak'
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Copyright = '(c) 2025 Alan Plocieniak. All rights reserved.'
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Description = 'Module for downloading CRX (extension package) for Chromium-based browsers.'
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PowerShellVersion = '5.1'
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CompatiblePSEditions = 'Desktop', 'Core'
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FunctionsToExport = '*'
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PrivateData = @{
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PSData = @{
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}
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}
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}

‎src/CRX.psm1

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$Public = @( Get-ChildItem -Path $PSScriptRoot\Public -Recurse -Filter *.ps1 -ErrorAction SilentlyContinue )
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$Private = @( Get-ChildItem -Path $PSScriptRoot\Private -Recurse -Filter *.ps1 -ErrorAction SilentlyContinue )
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Foreach ($import in @($Public + $Private)) {
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try {
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. $import.fullname
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}
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catch {
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Write-Error -Message "Failed to import function $($import.fullname): $_"
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}
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}
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Export-ModuleMember -Function $Public.Basename

‎src/Private/CRXUpdateInfo.ps1

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class CRXUpdateInfo {
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[string]$Version
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[string]$Url
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[string]$SHA256
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[string]$Status
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[int]$Size
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CRXUpdateInfo($obj) {
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$this.Version = $obj.version
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$this.Url = $obj.codebase
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$this.SHA256 = $obj.hash_sha256
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$this.Status = $obj.status
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$this.Size = $obj.size
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}
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}

‎src/Private/Get-CRXUpdateUrl.ps1

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function Get-CRXUpdateUrl {
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param (
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[Parameter(Mandatory = $true)]
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[string]$Id
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)
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"https://clients2.google.com/service/update2/crx?prodversion=131.0.6778.205&acceptformat=crx2,crx3&x=id%3D$Id%26installsource%3Dondemand%26uc"
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}

‎src/Public/Get-CRX.ps1

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function Get-CRX {
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[CmdletBinding()]
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param (
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[Parameter(Mandatory = $true)]
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[string]$Id,
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[Parameter(Mandatory = $true)]
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[string]$OutputDirectory
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)
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$info = Get-CRXUpdateInfo -Id $Id
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try {
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$outputPath = Join-Path -Path $OutputDirectory -ChildPath (Split-Path -Leaf $info.Url)
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Invoke-WebRequest -Uri $info.Url -OutFile $outputPath
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Get-Item -Path $outputPath
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}
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catch {
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Write-Error $_.Exception.Message
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}
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}

‎src/Public/Get-CRXUpdateInfo.ps1

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function Get-CRXUpdateInfo {
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[CmdletBinding()]
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param (
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[Parameter(Mandatory = $true)]
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[string]$Id
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)
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$url = Get-CRXUpdateUrl -Id $Id
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try {
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$update = Invoke-RestMethod -Uri $url
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$app = $update.gupdate.app
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if ($app -and $app.updatecheck) {
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return [CRXUpdateInfo]::new($app.updatecheck)
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}
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}
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catch {
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Write-Error $_.Exception.Message
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}
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return $null
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}

‎src/Public/Test-CRXUpdateAvailable.ps1

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function Test-CRXUpdateAvailable {
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[CmdletBinding()]
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param (
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[Parameter(Mandatory = $true)]
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[string]$Id,
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[Parameter(Mandatory = $true)]
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[version]$currentVersion
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)
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$updateInfo = Get-CRXUpdateInfo $Id
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if ($updateInfo) {
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$updateVersion = [version]$updateInfo.Version
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return $updateVersion -gt $currentVersion
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}
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else {
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return $false
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}
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}

‎tests/CRX.Tests.ps1

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Clear-Host
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if (-not (Get-Module -Name Pester)) {
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Import-Module -Name Pester -Force
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}
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Import-Module .\src\CRX.psm1 -Force
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Describe 'CRX.Tests' {
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Context 'Get-CRXUpdateInfo' {
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It 'Should return CRXUpdateInfo object' {
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$response = Get-CRXUpdateInfo "aoclhcccfdkjddgpaaajldgljhllhgmd"
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$response.Url | Should -Not -BeNullOrEmpty
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$response.Version | Should -Not -BeNullOrEmpty
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}
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It 'Should return null for invalid extension ID' {
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$response = Get-CRXUpdateInfo "invalid"
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$response | Should -BeNullOrEmpty
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}
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}
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Context 'Test-CRXUpdateAvailable' {
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It 'Should return true if update is available' {
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Mock -CommandName Get-CRXUpdateInfo -ModuleName CRX -MockWith {
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return [PSCustomObject]@{
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Version = "2.0.0"
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Url = "http://example.com"
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SHA256 = "dummyhash"
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Status = "ok"
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Size = 12345
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}
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}
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$result = Test-CRXUpdateAvailable -Id "aoclhcccfdkjddgpaaajldgljhllhgmd" -currentVersion "1.0.0"
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$result | Should -Be $true
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}
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It 'Should return false if no update is available' {
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Mock -CommandName Get-CRXUpdateInfo -ModuleName CRX -MockWith {
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return [PSCustomObject]@{
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Version = "1.0.0"
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Url = "http://example.com"
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SHA256 = "dummyhash"
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Status = "ok"
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Size = 12345
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}
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}
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$result = Test-CRXUpdateAvailable -Id "aoclhcccfdkjddgpaaajldgljhllhgmd" -currentVersion "1.0.0"
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$result | Should -Be $false
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}
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It 'Should return false if update info is null' {
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Mock -CommandName Get-CRXUpdateInfo -ModuleName CRX -MockWith { return $null }
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$result = Test-CRXUpdateAvailable -Id "aoclhcccfdkjddgpaaajldgljhllhgmd" -currentVersion "1.0.0"
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$result | Should -Be $false
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}
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}
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Context 'Get-CRX' {
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It 'Should download CRX file to specified directory' {
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Mock -CommandName Get-CRXUpdateInfo -ModuleName CRX -MockWith {
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return [PSCustomObject]@{
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Version = "2.0.0"
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Url = "http://example.com/extension.crx"
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SHA256 = "dummyhash"
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Status = "ok"
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Size = 12345
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}
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}
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Mock -CommandName Invoke-WebRequest -ModuleName CRX -MockWith {
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param ($Uri, $OutFile)
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New-Item -ItemType File -Path $OutFile -Force | Out-Null
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}
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$outputDir = ".\temp"
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$result = Get-CRX -Id "aoclhcccfdkjddgpaaajldgljhllhgmd" -OutputDirectory $outputDir
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$expectedPath = Join-Path -Path $outputDir -ChildPath "extension.crx"
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Test-Path $expectedPath | Should -Be $true
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$result | Should -BeOfType [System.IO.FileInfo]
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$result.FullName | Should -Be (Resolve-Path $expectedPath | Select-Object -ExpandProperty Path)
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Remove-Item -Path $outputDir -Recurse -Force
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}
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}
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}

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