public/Get-DuplicateItem.Tests.ps1
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$here = Split-Path -Parent $MyInvocation.MyCommand.Path $sut = (Split-Path -Leaf $MyInvocation.MyCommand.Path) -replace '\.Tests\.', '.' . "$here\$sut" Describe "Get-DuplicateItem" -Tag 'Unit' { Context 'Non-terminating errors' { $invalidPath = "TestDrive:\foo" It 'Shows error when Path does not exist' { Get-DuplicateItem -Path $invalidPath -ErrorVariable err -ErrorAction Continue 2>$null $err.Count | Should Not Be 0 } It 'Shows error when LiteralPath does not exist' { Get-DuplicateItem -LiteralPath $invalidPath -ErrorVariable err -ErrorAction Continue 2>$null $err.Count | Should Not Be 0 } It 'Shows error when pipeline object is not a string' { $invalidPathCollection = @( @( "foo", "bar") ) $invalidPathCollection | Get-DuplicateItem -ErrorVariable err -ErrorAction Continue 2>$null $err.Count | Should Not Be 0 } It 'Shows error when pipeline object is not an existing Path' { $invalidPath | Get-DuplicateItem -ErrorVariable err -ErrorAction Continue 2>$null $err.Count | Should Not Be 0 } } Context 'Terminating errors' { $invalidPath = "TestDrive:\foo" It 'Throws exception when Path does not exist' { { Get-DuplicateItem -Path $invalidPath -ErrorAction Stop } | Should Throw } It 'Throws exception when LiteralPath does not exist' { { Get-DuplicateItem -LiteralPath $invalidPath -ErrorAction Stop 2>$null } | Should Throw } It 'Throws exception when pipeline object is not an existing Path' { { $invalidPath | Get-DuplicateItem -ErrorAction Stop 2>$null } | Should Throw } It 'Throws exception when pipeline object is not a string' { $invalidPathCollection = @( @( "foo", "bar") ) { $invalidPathCollection | Get-DuplicateItem -ErrorAction Stop 2>$null } | Should Throw } } Context 'Silence on Errors' { $invalidPath = "TestDrive:\foo" It 'Remains silent when Path does not exist' { $err = Get-DuplicateItem -Path $invalidPath -ErrorVariable err -ErrorAction SilentlyContinue $err | Should Be $null } It 'Remains silent when LiteralPath does not exist' { $err = Get-DuplicateItem -Path $invalidPath -ErrorVariable err -ErrorAction SilentlyContinue $err | Should Be $null } It 'Remains silent when pipeline object is not a string' { $invalidPathCollection = @( @( "foo", "bar") ) $err = $invalidPathCollection | Get-DuplicateItem -ErrorVariable err -ErrorAction SilentlyContinue $err | Should Be $null } It 'Remains silent when pipeline object is not an existing Path' { $err = $invalidPath | Get-DuplicateItem -ErrorVariable err -ErrorAction SilentlyContinue $err | Should Be $null } } Context 'Behavior' { $parentDir = "TestDrive:\parent" New-Item $parentDir -ItemType Directory -Force > $null 'foo' | Out-File "$parentDir\file1" -Encoding utf8 -Force 'foo' | Out-File "$parentDir\file2" -Encoding utf8 -Force 'foooooooo' | Out-File "$parentDir\file3" -Encoding utf8 -Force $childDir = "$parentDir\child" New-Item $childDir -ItemType Directory -Force > $null 'foo' | Out-File "$childDir\file1" -Encoding utf8 -Force 'foo' | Out-File "$childDir\file2" -Encoding utf8 -Force 'foooooooo123' | Out-File "$childDir\file4" -Encoding utf8 -Force It 'Returns duplicate file paths' { $result = Get-DuplicateItem -Path $parentDir ($result | Measure-Object).Count | Should -Be 2 $result | Should -BeOfType [System.IO.FileInfo] } It 'Returns duplicate file paths in all descendent folders' { $result = Get-DuplicateItem -Path $parentDir -Recurse ($result | Measure-Object).Count | Should -Be 4 $result | Should -BeOfType [System.IO.FileInfo] } It 'Returns duplicate file paths as hashtable: <hash> => [System.IO.FileInfo][]' { $result = Get-DuplicateItem -Path $parentDir -AsHashtable $result | Should -BeOfType [hashtable] $result.Keys.Count | Should -Be 1 $result.Values.Count | Should -Be 1 # Note: Cannot use array syntax like $result.Keys[0] because that syntax returns a KeyCollection object instead of a string! # See: https://stackoverflow.com/questions/26552453/powershell-hashtable-keys-property-doesnt-return-the-keys-it-returns-a-keycol # This causes the accessing of a hashtable value (using its key) to return an array containing the value. Using the .Count property always returns 1. # $key = $result.Keys[0] $key = $result.Keys | Select-Object -First 1 $value = $result[$key] $key | Should -BeOfType [string] ,$value | Should -BeOfType [System.Collections.ArrayList] $value | Should -BeOfType [System.IO.FileInfo] } It 'Returns duplicate file paths as hashtable: <hash> => [System.IO.FileInfo][] in all descendent folders' { $result = Get-DuplicateItem -Path $parentDir -AsHashtable -Recurse $result | Should -BeOfType [hashtable] $result.Keys.Count | Should -Be 1 $result.Values.Count | Should -Be 1 # Note: Cannot use array syntax like $result.Keys[0] because that syntax returns a KeyCollection object instead of a string! # See: https://stackoverflow.com/questions/26552453/powershell-hashtable-keys-property-doesnt-return-the-keys-it-returns-a-keycol # This causes the accessing of a hashtable value (using its key) to return an array containing the value. Using the .Count property always returns 1. # $key = $result.Keys[0] $key = $result.Keys | Select-Object -First 1 $value = $result[$key] $key | Should -BeOfType [string] ,$value | Should -BeOfType [System.Collections.ArrayList] $value | Should -BeOfType [System.IO.FileInfo] } It 'Returns duplicate file paths in all descendent folders' { $result = Get-DuplicateItem -Path $parentDir -Recurse ($result | Measure-Object).Count | Should -Be 4 $result | Should -BeOfType [System.IO.FileInfo] } It 'Returns non-duplicate file paths' { $result = Get-DuplicateItem -Path $parentDir -Inverse ($result | Measure-Object).Count | Should -Be 1 $result | Should -BeOfType [System.IO.FileInfo] } It 'Returns non-duplicate file paths in all descendent folders' { $result = Get-DuplicateItem -Path $parentDir -Inverse -Recurse ($result | Measure-Object).Count | Should -Be 2 $result | Should -BeOfType [System.IO.FileInfo] } It 'Returns non-duplicate file paths as hashtable: <hash> => [System.IO.FileInfo][]' { $result = Get-DuplicateItem -Path $parentDir -Inverse -AsHashtable $result | Should -BeOfType [hashtable] $result.Keys.Count | Should -Be 1 $result.Values.Count | Should -Be 1 # Note: Cannot use array syntax like $result.Keys[0] because that syntax returns a KeyCollection object instead of a string! # See: https://stackoverflow.com/questions/26552453/powershell-hashtable-keys-property-doesnt-return-the-keys-it-returns-a-keycol # This causes the accessing of a hashtable value (using its key) to return an array containing the value. Using the .Count property always returns 1. # $key = $result.Keys[0] $key = $result.Keys | Select-Object -First 1 $value = $result[$key] $key | Should -BeOfType [string] ,$value | Should -BeOfType [System.Collections.ArrayList] $value | Should -BeOfType [System.IO.FileInfo] } It 'Returns non-duplicate file paths as hashtable: <hash> => [System.IO.FileInfo][] in all descendent folders' { $result = Get-DuplicateItem -Path $parentDir -Inverse -AsHashtable -Recurse $result | Should -BeOfType [hashtable] $result.Keys.Count | Should -Be 2 $result.Values.Count | Should -Be 2 # Note: Cannot use array syntax like $result.Keys[0] because that syntax returns a KeyCollection object instead of a string! # See: https://stackoverflow.com/questions/26552453/powershell-hashtable-keys-property-doesnt-return-the-keys-it-returns-a-keycol # This causes the accessing of a hashtable value (using its key) to return an array containing the value. Using the .Count property always returns 1. # $key = $result.Keys[0] $key = $result.Keys | Select-Object -First 1 $value = $result[$key] $key | Should -BeOfType [string] ,$value | Should -BeOfType [System.Collections.ArrayList] $value | Should -BeOfType [System.IO.FileInfo] } } } |