PowerShell/test/powershell/Get-Content.Tests.ps1
2016-05-04 17:09:01 -07:00

134 lines
6.7 KiB
PowerShell

Describe "Get-Content" -Tags:DRT {
$testString = "This is a test content for a file"
$nl = [Environment]::NewLine
$firstline = "Here's a first line "
$secondline = " here's a second line"
$thirdline = "more text"
$fourthline = "just to make sure"
$fifthline = "there's plenty to work with"
$testString2 = $firstline + $nl + $secondline + $nl + $thirdline + $nl + $fourthline + $nl + $fifthline
$testPath = Join-Path -Path $TestDrive -ChildPath testfile1
$testPath2 = Join-Path -Path $TestDrive -ChildPath testfile2
BeforeEach {
New-Item -Path $testPath -ItemType file -Force -Value $testString
New-Item -Path $testPath2 -ItemType file -Force -Value $testString2
}
AfterEach {
Remove-Item -Path $testPath -Force
Remove-Item -Path $testPath2 -Force
}
It "Should throw an error on a directory " {# also tests that -erroraction SilentlyContinue will work.
Get-Content . -ErrorAction SilentlyContinue | Should Throw
}
It "Should return an Object when listing only a single line" {
(Get-Content -Path $testPath).GetType().BaseType.Name | Should Be "Object"
}
It "Should deliver an array object when listing a file with multiple lines" {
(Get-Content -Path $testPath2).GetType().BaseType.Name | Should Be "Array"
}
It "Should return the correct information from a file" {
(Get-Content -Path $testPath) | Should Be $testString
}
It "Should be able to call using the gc alias" {
{ gc -Path $testPath } | Should Not Throw
}
It "Should be able to call using the type alias" {
{ type -Path $testPath } | Should Not Throw
}
It "Should return the same values for aliases" {
$getContentAlias = Get-Content -Path $testPath
$gcAlias = gc -Path $testPath
$typeAlias = type -Path $testPath
$getContentAlias | Should Be $gcAlias
$getContentAlias | Should Be $typeAlias
}
It "Should be able to return a specific line from a file" {
(Get-Content -Path $testPath2)[1] | Should be $secondline
}
It "Should be able to specify the number of lines to get the content of using the TotalCount switch" {
$returnArray = (Get-Content -Path $testPath2 -TotalCount 2)
$returnArray[0] | Should Be $firstline
$returnArray[1] | Should Be $secondline
}
It "Should be able to specify the number of lines to get the content of using the Head switch" {
$returnArray = (Get-Content -Path $testPath2 -Head 2)
$returnArray[0] | Should Be $firstline
$returnArray[1] | Should Be $secondline
}
It "Should be able to specify the number of lines to get the content of using the First switch" {
$returnArray = (Get-Content -Path $testPath2 -First 2)
$returnArray[0] | Should Be $firstline
$returnArray[1] | Should Be $secondline
}
It "Should return the last line of a file using the Tail switch" {
Get-Content -Path $testPath -Tail 1 | Should Be $testString
}
It "Should return the last lines of a file using the Last alias" {
Get-Content -Path $testPath2 -Last 1 | Should Be $fifthline
}
It "Should be able to get content within a different drive" {
pushd env:
$expectedoutput = [Environment]::GetEnvironmentVariable("PATH");
{ Get-Content PATH } | Should Not Throw
Get-Content PATH | Should Be $expectedoutput
popd
}
#[BugId(BugDatabase.WindowsOutOfBandReleases, 906022)]
It "should throw 'PSNotSupportedException' when you set-content to an unsupported provider" -Skip:($IsLinux -Or $IsOSX) {
{get-content -path HKLM:\\software\\microsoft -ea stop} | Should Throw "IContentCmdletProvider interface is not implemented"
}
It "should Get-Content with a variety of -Tail and -ReadCount values" {#[DRT]
set-content -path $testPath "Hello,World","Hello2,World2","Hello3,World3","Hello4,World4"
$result=get-content -path $testPath -readcount:-1 -tail 5
$result.Length | Should Be 4
$expected = "Hello,World","Hello2,World2","Hello3,World3","Hello4,World4"
for ($i = 0; $i -lt $result.Length ; $i++) { $result[$i] | Should BeExactly $expected[$i]}
$result=get-content -path $testPath -readcount 0 -tail 3
$result.Length | Should Be 3
$expected = "Hello2,World2","Hello3,World3","Hello4,World4"
for ($i = 0; $i -lt $result.Length ; $i++) { $result[$i] | Should BeExactly $expected[$i]}
$result=get-content -path $testPath -readcount 1 -tail 3
$result.Length | Should Be 3
$expected = "Hello2,World2","Hello3,World3","Hello4,World4"
for ($i = 0; $i -lt $result.Length ; $i++) { $result[$i] | Should BeExactly $expected[$i]}
$result=get-content -path $testPath -readcount 99999 -tail 3
$result.Length | Should Be 3
$expected = "Hello2,World2","Hello3,World3","Hello4,World4"
for ($i = 0; $i -lt $result.Length ; $i++) { $result[$i] | Should BeExactly $expected[$i]}
$result=get-content -path $testPath -readcount 2 -tail 3
$result.Length | Should Be 2
$expected = "Hello2,World2","Hello3,World3"
$expected = $expected,"Hello4,World4"
for ($i = 0; $i -lt $result.Length ; $i++) { $result[$i] | Should BeExactly $expected[$i]}
$result=get-content -path $testPath -readcount 2 -tail 2
$result.Length | Should Be 2
$expected = "Hello3,World3","Hello4,World4"
for ($i = 0; $i -lt $result.Length ; $i++) { $result[$i] | Should BeExactly $expected[$i]}
$result=get-content -path $testPath -delimiter "," -tail 2
$result.Length | Should Be 2
if ($IsWindows) {$expected = "World3`r`nHello4,","World4`r`n"
} else {$expected = "World3`nHello4,","World4`n"}
for ($i = 0; $i -lt $result.Length ; $i++) { $result[$i] | Should BeExactly $expected[$i]}
$result=get-content -path $testPath -delimiter "o" -tail 3
$result.Length | Should Be 3
if ($IsWindows) {$expected = "rld3`r`nHello","4,Wo","rld4"
} else {$expected = "rld3`nHello","4,Wo","rld4"}
for ($i = 0; $i -lt $result.Length ; $i++) { $result[$i].Trim() | Should BeExactly $expected[$i]}
$result=get-content -path $testPath -encoding:Byte -tail 10
$result.Length | Should Be 10
if ($IsWindows) {
$expected = "52","44","87","111","114","108","100","52","13","10"
for ($i = 0; $i -lt $result.Length ; $i++) { $result[$i] | Should BeExactly $expected[$i]}
}
}
#[BugId(BugDatabase.WindowsOutOfBandReleases, 905829)]
It "should get-content that matches the input string"{
set-content $testPath "Hello,llllWorlld","Hello2,llllWorlld2"
$result=get-content $testPath -delimiter "ll"
$result.Length | Should Be 9
if ($IsWindows) {$expected = "Hell","o,ll","ll","Worll","d`r`nHell","o2,ll","ll","Worll","d2`r`n"
} else {$expected = "Hell","o,ll","ll","Worll","d`nHell","o2,ll","ll","Worll","d2`n"}
for ($i = 0; $i -lt $result.Length ; $i++) { $result[$i] | Should BeExactly $expected[$i]}
}
}