Tests/Unit/CommonResourceHelper.Tests.ps1
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$errorActionPreference = 'Stop' Set-StrictMode -Version 'Latest' Describe 'CommonResourceHelper Unit Tests' { BeforeAll { # Import the CommonResourceHelper module to test $testsFolderFilePath = Split-Path -Path $PSScriptRoot -Parent $moduleRootFilePath = Split-Path -Path $testsFolderFilePath -Parent $dscResourcesFolderFilePath = Join-Path -Path $moduleRootFilePath -ChildPath 'DscResources' $commonResourceHelperFilePath = Join-Path -Path $dscResourcesFolderFilePath -ChildPath 'CommonResourceHelper.psm1' Import-Module -Name $commonResourceHelperFilePath } InModuleScope 'CommonResourceHelper' { Describe 'Test-IsNanoServer' { $testComputerInfoNanoServer = @{ NanoServer = 1 } $testComputerInfoServerNotNano = @{ } Context 'Computer OS type is Server and OS server level is NanoServer' { Mock -CommandName 'Test-Path' -MockWith { return $true } Mock -CommandName 'Get-ItemProperty' -MockWith { return $testComputerInfoNanoServer } It 'Should not throw' { { $null = Test-IsNanoServer } | Should -Not -Throw } It 'Should check the ServerLevels registry path' { Assert-MockCalled -CommandName 'Get-ItemProperty' -Exactly 1 -Scope 'Context' } It 'Should return true' { Test-IsNanoServer | Should -BeTrue } } Context 'Computer OS type is Server and OS server level is not NanoServer' { Mock -CommandName 'Test-Path' -MockWith { return $true } Mock -CommandName 'Get-ItemProperty' -MockWith { return $testComputerInfoServerNotNano } It 'Should not throw' { { $null = Test-IsNanoServer } | Should -Not -Throw } It 'Should check the ServerLevels registry path' { Assert-MockCalled -CommandName 'Get-ItemProperty' -Exactly 1 -Scope 'Context' } It 'Should return false' { Test-IsNanoServer | Should -BeFalse } } Context 'Computer OS type is not Server' { Mock -CommandName 'Test-Path' -MockWith { return $false } It 'Should not throw' { { $null = Test-IsNanoServer } | Should -Not -Throw } It 'Should check the ServerLevels registry path' { Assert-MockCalled -CommandName 'Test-Path' -Exactly 1 -Scope 'Context' } It 'Should return false' { Test-IsNanoServer | Should -BeFalse } } } Describe 'Test-CommandExists' { $testCommandName = 'TestCommandName' Mock -CommandName 'Get-Command' -MockWith { return $Name } Context 'Get-Command returns the command' { It 'Should not throw' { { $null = Test-CommandExists -Name $testCommandName } | Should -Not -Throw } It 'Should retrieve the command with the specified name' { $getCommandParameterFilter = { return $Name -eq $testCommandName } Assert-MockCalled -CommandName 'Get-Command' -ParameterFilter $getCommandParameterFilter -Exactly 1 -Scope 'Context' } It 'Should return true' { Test-CommandExists -Name $testCommandName | Should -BeTrue } } Context 'Get-Command returns null' { Mock -CommandName 'Get-Command' -MockWith { return $null } It 'Should not throw' { { $null = Test-CommandExists -Name $testCommandName } | Should -Not -Throw } It 'Should retrieve the command with the specified name' { $getCommandParameterFilter = { return $Name -eq $testCommandName } Assert-MockCalled -CommandName 'Get-Command' -ParameterFilter $getCommandParameterFilter -Exactly 1 -Scope 'Context' } It 'Should return false' { Test-CommandExists -Name $testCommandName | Should -BeFalse } } } } } |