Powershell.Chunks.Tests.ps1
|
$here = Split-Path -Parent $MyInvocation.MyCommand.Path $sut = Split-Path -Leaf $here Import-module "$here\$sut.psd1" -Force Describe "Unit tests for a $sut" -Tag Run, UnitTest, UT { Context "Get-Chunk functional" { It "No parameters" { Get-Chunk | Should -BeNullOrEmpty } It "A null array chunked by <num> with a is null" -TestCases ` @{ num = -2 }, @{ num = -1 }, @{ num = 0 }, @{ num = 1 }, @{ num = 2 } { Param($num) Get-Chunk $num | Should -BeNullOrEmpty } It "Param: An array chunked by 0 is the same array" { $orig = @(1, 2, 3, 4) $res = Get-Chunk 0 -InputObject $orig $res | Should -Be $orig $res -eq $orig | Should -BeFalse } It "Param: An chuncked array is the same array if a size is not defined" { $orig = @(1, 2, 3, 4) $res = Get-Chunk -InputObject $orig $res | Should -Be $orig $res -eq $orig | Should -BeFalse } It "Param: 3 elements chunked by 1" { Get-Chunk 1 -InputObject @('a', 'b', 'c') | Should -Be @( @('a'), @('b'), @('c') ) } It "Param: 3 elements chunked by -1 (reverse order)" { Get-Chunk -1 -InputObject @('a', 'b', 'c') | Should -Be @( @('c'), @('b'), @('a') ) } It "Param: 4 elements chunked by 2" { Get-Chunk 2 -InputObject @(1, 2, 3, 4) | Should -Be @( @(1, 2), @(3, 4) ) } It "Param: 4 elements chunked by -2" { Get-Chunk -2 -InputObject @(1, 2, 3, 4) | Should -Be @( @(4, 3), @(2, 1) ) } It "Param: 5 elements chunked by 2" { Get-Chunk 2 -InputObject @(1, 2, 3, 4, 5) | Should -Be @( @(1, 2), @(3, 4), @(5) ) } It "Param: 5 elements chunked by -2" { Get-Chunk -2 -InputObject @(1, 2, 3, 4, 5) | Should -Be @( @(5, 4), @(3, 2), @(1) ) } It "Param: 6 elements chunked by 3" { Get-Chunk 3 -InputObject @(1, 2, 3, 4, 5, 6) | Should -Be @( @(1, 2, 3), @(4, 5, 6) ) } It "Param: 6 elements chunked by -3" { Get-Chunk -3 -InputObject @(1, 2, 3, 4, 5, 6) | Should -Be @( @(6, 5, 4), @(3, 2, 1) ) } It "Param: 7 elements chunked by 3" { Get-Chunk 3 -InputObject @(1, 2, 3, 4, 5, 6, 7) | Should -Be @( @(1, 2, 3), @(4, 5, 6), @(7) ) } It "Param: 7 elements chunked by -3" { Get-Chunk -3 -InputObject @(1, 2, 3, 4, 5, 6, 7) | Should -Be @( @(7, 6, 5), @(4, 3, 2), @(1) ) } It "Pipe: An array chunked by 0 is the same array" { $orig = @(1, 2, 3, 4) $res = $orig | Get-Chunk 0 $res | Should -Be $orig $res -eq $orig | Should -BeFalse } It "Pipe: An chuncked array is the same array if a size is not defined" { $orig = @(1, 2, 3, 4) $res = $orig | Get-Chunk $res | Should -Be $orig $res -eq $orig | Should -BeFalse } It "Pipe: 3 elements chunked by 1" { 'a', 'b', 'c' | Get-Chunk 1 | Should -Be @( @('a'), @('b'), @('c') ) } It "Pipe: 3 elements chunked by -1 (reverse order)" { 'a', 'b', 'c' | Get-Chunk -1 | Should -Be @( @('c'), @('b'), @('a') ) } It "Pipe: 4 elements chunked by 2" { 1, 2, 3, 4 | Get-Chunk 2 | Should -Be @( @(1, 2), @(3, 4) ) } It "Pipe: 4 elements chunked by -2" { 1, 2, 3, 4 | Get-Chunk -2 | Should -Be @( @(4, 3), @(2, 1) ) } It "Pipe: 5 elements chunked by 2" { 1, 2, 3, 4, 5 | Get-Chunk 2 | Should -Be @( @(1, 2), @(3, 4), @(5) ) } It "Pipe: 5 elements chunked by -2" { 1, 2, 3, 4, 5 | Get-Chunk -2 | Should -Be @( @(5, 4), @(3, 2), @(1) ) } It "Pipe: 6 elements chunked by 3" { 1, 2, 3, 4, 5, 6 | Get-Chunk 3 | Should -Be @( @(1, 2, 3), @(4, 5, 6) ) } It "Pipe: 6 elements chunked by -3" { 1, 2, 3, 4, 5, 6 | Get-Chunk -3 | Should -Be @( @(6, 5, 4), @(3, 2, 1) ) } It "Pipe: 7 elements chunked by 3" { 1, 2, 3, 4, 5, 6, 7 | Get-Chunk 3 | Should -Be @( @(1, 2, 3), @(4, 5, 6), @(7) ) } It "Pipe: 7 elements chunked by -3" { 1, 2, 3, 4, 5, 6, 7 | Get-Chunk -3 | Should -Be @( @(7, 6, 5), @(4, 3, 2), @(1) ) } } } |