435 lines
16 KiB
PowerShell
435 lines
16 KiB
PowerShell
# Copyright (c) Microsoft Corporation.
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# Licensed under the MIT License.
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Describe "Measure-Object" -Tags "CI" {
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BeforeAll {
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$testObject = 1,3,4
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$testObject2 = 1..100
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}
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It "Should be able to be called without error" {
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{ Measure-Object | Out-Null } | Should -Not -Throw
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}
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It "Should be able to call on piped input" {
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{ $testObject | Measure-Object } | Should -Not -Throw
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}
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It "Should be able to count the number of objects input to it" {
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$($testObject | Measure-Object).Count | Should -Be $testObject.Length
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}
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It "Should calculate Standard Deviation" {
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$actual = ($testObject | Measure-Object -StandardDeviation)
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# We check this way since .StandardDeviation returns a double value
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# 1.52752523165195 was calculated outside powershell using formula from
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# http://mathworld.wolfram.com/StandardDeviation.html
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[Math]::abs($actual.StandardDeviation - 1.52752523165195) | Should -BeLessThan .00000000000001
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}
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It "Should calculate Standard Deviation" {
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$actual = ($testObject2 | Measure-Object -StandardDeviation)
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# We check this way since .StandardDeviation returns a double value
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# 29.011491975882 was calculated outside powershell using formula from
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# http://mathworld.wolfram.com/StandardDeviation.html
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[Math]::abs($actual.StandardDeviation - 29.011491975882) | Should -BeLessThan .0000000000001
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}
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It "Should calculate Standard Deviation with -Sum" {
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$actual = ($testObject | Measure-Object -Sum -StandardDeviation)
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# We check this way since .StandardDeviation returns a double value
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$actual.Sum | Should -Be 8
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# 1.52752523165195 was calculated outside powershell using formula from
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# http://mathworld.wolfram.com/StandardDeviation.html
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[Math]::abs($actual.StandardDeviation - 1.52752523165195) | Should -BeLessThan .00000000000001
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}
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It "Should calculate Standard Deviation with -Average" {
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$actual = ($testObject | Measure-Object -Average -StandardDeviation)
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# We check this way since .StandardDeviation returns a double value
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[Math]::abs($actual.Average - 2.66666666666667) | Should -BeLessThan .00000000000001
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# 1.52752523165195 was calculated outside powershell using formula from
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# http://mathworld.wolfram.com/StandardDeviation.html
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[Math]::abs($actual.StandardDeviation - 1.52752523165195) | Should -BeLessThan .00000000000001
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}
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It "Should calculate Standard Deviation with -Sum -Average" {
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$actual = ($testObject2 | Measure-Object -Sum -Average -StandardDeviation)
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# We check this way since .StandardDeviation returns a double value
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$actual.Sum | Should -Be 5050
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$actual.Average | Should -Be 50.5
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# 29.011491975882 was calculated outside powershell using formula from
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# http://mathworld.wolfram.com/StandardDeviation.html
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[Math]::abs($actual.StandardDeviation - 29.011491975882) | Should -BeLessThan .0000000000001
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}
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It "Should be able to count using the Property switch" {
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$expected = $(Get-ChildItem $TestDrive).Length
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$actual = $(Get-ChildItem $TestDrive | Measure-Object -Property Length).Count
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$actual | Should -Be $expected
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}
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It "Should be able to use wildcards for the Property argument" {
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$data = [pscustomobject]@{ A1 = 1; A2 = 2; C3 = 3 },
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[pscustomobject]@{ A1 = 1; A2 = 2; A3 = 3 }
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$actual = $data | Measure-Object -Property A* -Sum
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$actual.Count | Should -Be 3
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$actual[0].Property | Should -Be A1
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$actual[0].Sum | Should -Be 2
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$actual[0].Count | Should -Be 2
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$actual[1].Property | Should -Be A2
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$actual[1].Sum | Should -Be 4
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$actual[1].Count | Should -Be 2
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$actual[2].Property | Should -Be A3
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$actual[2].Sum | Should -Be 3
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$actual[2].Count | Should -Be 1
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}
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Context "Numeric tests" {
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It "Should be able to sum" {
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$actual = $testObject | Measure-Object -Sum
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$expected = 0
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foreach ( $obj in $testObject )
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{
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$expected += $obj
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}
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$actual.Sum | Should -Be $expected
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}
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It "Should be able to average" {
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$actual = $testObject | Measure-Object -Average
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$expected = 0
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foreach ( $obj in $testObject )
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{
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$expected += $obj
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}
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$expected /= $testObject.length
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$actual.Average | Should -Be $expected
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}
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It "Should be able to return a minimum" {
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$actual = $testObject | Measure-Object -Minimum
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$expected = $testObject[0]
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for ($i=0; $i -lt $testObject.length; $i++)
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{
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if ( $testObject[$i] -lt $expected )
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{
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$expected = $testObject[$i]
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}
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}
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$actual.Minimum | Should -Be $expected
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}
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It "Should be able to return a minimum when multiple objects are the minimum" {
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$testMinimum = 1,1,2,4
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$actual = $testMinimum | Measure-Object -Minimum
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$expected = $testMinimum[0]
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for ($i=1; $i -lt $testMinimum.length; $i++)
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{
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if ( $testMinimum[$i] -lt $expected )
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{
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$expected = $testMinimum[$i]
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}
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}
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$actual.Minimum | Should -Be $expected
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}
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It "Should be able to return a maximum" {
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$actual = $testObject | Measure-Object -Maximum
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$expected = $testObject[0]
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for ($i=1; $i -lt $testObject.length; $i++)
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{
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if ( $testObject[$i] -gt $expected )
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{
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$expected = $testObject[$i]
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}
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}
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$actual.Maximum | Should -Be $expected
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}
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It "Should be able to return a maximum when multiple objects are the maximum" {
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$testMaximum = 1,3,5,5
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$actual = $testMaximum | Measure-Object -Maximum
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$expected = $testMaximum[0]
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for ($i=1; $i -lt $testMaximum.length; $i++)
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{
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if ( $testMaximum[$i] -gt $expected )
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{
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$expected = $testMaximum[$i]
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}
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}
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$actual.Maximum | Should -Be $expected
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}
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It "Should be able to return all the statitics for given values" {
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$result = 1..10 | Measure-Object -AllStats
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$result.Count | Should -Be 10
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$result.Average | Should -Be 5.5
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$result.Sum | Should -Be 55
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$result.Minimum | Should -Be 1
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$result.Maximum | Should -Be 10
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($result.StandardDeviation).ToString() | Should -Be '3.0276503540974917'
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}
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}
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Context "String tests" {
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BeforeAll {
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$nl = [Environment]::NewLine
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$testString = "HAD I the heavens' embroidered cloths,$nl Enwrought with golden and silver light,$nl The blue and the dim and the dark cloths$nl Of night and light and the half light,$nl I would spread the cloths under your feet:$nl But I, being poor, have only my dreams;$nl I have spread my dreams under your feet;$nl Tread softly because you tread on my dreams."
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}
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It "Should be able to count the number of words in a string" {
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$expectedLength = $testString.Replace($nl,"").Split().length
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$actualLength = $testString | Measure-Object -Word
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$actualLength.Words | Should -Be $expectedLength
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}
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It "Should be able to count the number of characters in a string" {
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$expectedLength = $testString.length
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$actualLength = $testString | Measure-Object -Character
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$actualLength.Characters | Should -Be $expectedLength
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}
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It "Should be able to count the number of lines in a string" {
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$expectedLength = $testString.Split($nl, [System.StringSplitOptions]::RemoveEmptyEntries).length
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$actualLength = $testString | Measure-Object -Line
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$actualLength.Lines | Should -Be $expectedLength
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}
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}
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}
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Describe "Measure-Object DRT basic functionality" -Tags "CI" {
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BeforeAll {
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if(-not ([System.Management.Automation.PSTypeName]'TestMeasureGeneric').Type)
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{
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Add-Type -TypeDefinition @"
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[System.Flags]
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public enum TestMeasureGeneric : uint
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{
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TestSum = 1,
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TestAverage = 2,
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TestMax = 4,
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TestMin = 8
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}
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"@
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}
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if(-not ([System.Management.Automation.PSTypeName]'TestMeasureText').Type)
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{
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Add-Type -TypeDefinition @"
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[System.Flags]
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public enum TestMeasureText : uint
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{
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TestIgnoreWS = 1,
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TestCharacter = 2,
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TestWord = 4,
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TestLine = 8
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}
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"@
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}
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$employees = [pscustomobject]@{"FirstName"="joseph"; "LastName"="smith"; "YearsInMS"=15},
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[pscustomobject]@{"FirstName"="paul"; "LastName"="smith"; "YearsInMS"=15},
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[pscustomobject]@{"FirstName"="mary jo"; "LastName"="soe"; "YearsInMS"=5},
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[pscustomobject]@{"FirstName"="edmund`todd `n"; "LastName"="bush"; "YearsInMS"=9}
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}
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It "Measure-Object with Generic enum value options combination should work"{
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$flags = [TestMeasureGeneric]0
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$property = "FirstName"
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$testSum = ($flags -band [TestMeasureGeneric]::TestSum) -gt 0
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$testAverage = ($flags -band [TestMeasureGeneric]::TestAverage) -gt 0
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$testMax = ($flags -band [TestMeasureGeneric]::TestMax) -gt 0
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$testMin = ($flags -band [TestMeasureGeneric]::TestMin) -gt 0
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$result = $employees | Measure-Object -Sum:$testSum -Average:$testAverage -Max:$testMax -Min:$testMin -Prop $property
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$result.Count | Should -Be 4
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$result.Sum | Should -BeNullOrEmpty
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$result.Average | Should -BeNullOrEmpty
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$result.Max | Should -BeNullOrEmpty
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$result.Min | Should -BeNullOrEmpty
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for ($i = 1; $i -lt 8 * 2; $i++)
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{
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$flags = [TestMeasureGeneric]$i
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$property = "YearsInMS"
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$testSum = ($flags -band [TestMeasureGeneric]::TestSum) -gt 0
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$testAverage = ($flags -band [TestMeasureGeneric]::TestAverage) -gt 0
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$testMax = ($flags -band [TestMeasureGeneric]::TestMax) -gt 0
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$testMin = ($flags -band [TestMeasureGeneric]::TestMin) -gt 0
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$result = $employees | Measure-Object -Sum:$testSum -Average:$testAverage -Max:$testMax -Min:$testMin -Prop $property
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$result.Count | Should -Be 4
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if($testSum)
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{
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$result.Sum | Should -Be 44
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}
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else
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{
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$result.Sum | Should -BeNullOrEmpty
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}
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if($testAverage)
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{
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$result.Average | Should -Be 11
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}
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else
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{
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$result.Average | Should -BeNullOrEmpty
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}
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if($testMax)
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{
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$result.Maximum | Should -Be 15
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}
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else
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{
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$result.Maximum | Should -BeNullOrEmpty
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}
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if($testMin)
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{
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$result.Minimum | Should -Be 5
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}
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else
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{
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$result.Minimum | Should -BeNullOrEmpty
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}
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}
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}
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It "Measure-Object with Text combination should work"{
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for ($i = 1; $i -lt 8 * 2; $i++)
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{
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$flags = [TestMeasureText]$i
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$property = "FirstName"
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$testIgnoreWS = ($flags -band [TestMeasureText]::TestIgnoreWS) -gt 0
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$testCharacter = ($flags -band [TestMeasureText]::TestCharacter) -gt 0
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$testWord = ($flags -band [TestMeasureText]::TestWord) -gt 0
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$testLine = ($flags -band [TestMeasureText]::TestLine) -gt 0
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$result = $employees | Measure-Object -IgnoreWhiteSpace:$testIgnoreWS -Character:$testCharacter -Word:$testWord -Line:$testLine -Prop $property
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if($testCharacter)
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{
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if($testIgnoreWS)
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{
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$result.Characters | Should -Be 25
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}
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else
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{
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$result.Characters | Should -Be 29
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}
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}
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else
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{
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$result.Characters | Should -BeNullOrEmpty
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}
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if($testWord)
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{
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$result.Words | Should -Be 6
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}
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else
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{
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$result.Words | Should -BeNullOrEmpty
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}
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if($testLine)
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{
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$result.Lines | Should -Be 4
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}
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else
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{
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$result.Lines | Should -BeNullOrEmpty
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}
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}
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}
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}
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# Since PSPropertyExpression is now a public type, it can be tested
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# directly, independent of the Measure-Object cmdlet
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Describe "Directly test the PSPropertyExpression type" -Tags "CI" {
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# this function is used to test the use of PSPropertyExpression
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# as a parameter in script
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function Test-PSPropertyExpression {
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[CmdletBinding()]
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param (
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[Parameter(Mandatory,Position=0)]
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[PSPropertyExpression]
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$pe,
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[Parameter(ValueFromPipeline)]
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$InputObject
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)
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begin { $sum = 0}
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process { $sum += $pe.GetValues($InputObject).result }
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end { $sum }
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}
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It "Test-PropertyExpression function with a wildcard property expression should sum numbers" {
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$result = (1..10).ForEach{@{value = $_}} | Test-PSPropertyExpression val*
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$result | Should -Be 55
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}
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It "Test-PropertyExpression function with a scriptblock property expression should sum numbers" {
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$result = 1..10 | Test-PSPropertyExpression {$_}
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$result | Should -Be 55
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}
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It "Test-PropertyExpression function with a scriptblock property expression should be able to transform input" {
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# Count the number of 'e's in the words.
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$result = "one", "two", "three", "four", "five" | Test-PSPropertyExpression {($_.ToCharArray() -match 'e').Count}
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$result | Should -Be 4
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}
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It "Measure-Object with multiple lines should work"{
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$result = "123`n4" | Measure-Object -Line
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$result.Lines | Should -Be 2
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}
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It "Measure-Object with ScriptBlock properties should work" {
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$result = 1..10 | Measure-Object -Sum -Average -Minimum -Maximum -Property {$_ * 10}
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$result.Count | Should -Be 10
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$result.Average | Should -Be 55
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$result.Sum | Should -Be 550
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$result.Minimum | Should -Be 10
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$result.Maximum | Should -Be 100
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$result.Property | Should -Be '$_ * 10'
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}
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It "Measure-Object with ScriptBlock properties should work with -word" {
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$result = "a,b,c", "d,e" | Measure-Object -Word {$_ -split ','}
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$result.Words | Should -Be 5
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}
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It "Measure-Object ScriptBlock properties should be able to transform input" {
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$map = @{ one = 1; two = 2; three = 3 }
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$result = "one", "two", "three" | Measure-Object -Sum {$map[$_]}
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$result.Sum | Should -Be 6
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}
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It "Measure-Object should handle hashtables as objects" {
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$htables = @{foo = 1}, @{foo = 3}, @{foo = 10}
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$result = $htables | Measure-Object -Sum fo*
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$result.Sum | Should -Be 14
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}
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It "Measure-Object should handle hashtables as objects with ScriptBlock properties" {
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$htables = @{foo = 1}, @{foo = 3}, @{foo = 10}
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$result = $htables | Measure-Object -Sum {$_.foo * 10 }
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$result.Sum | Should -Be 140
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}
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}
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