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Title: Test-Path: Return $false when given an empty or $null -Path/-LiteralPath value by vexx32 · Pull Request #8080 · PowerShell/PowerShell · GitHub

Open Graph Title: Test-Path: Return $false when given an empty or $null -Path/-LiteralPath value by vexx32 · Pull Request #8080 · PowerShell/PowerShell

X Title: Test-Path: Return $false when given an empty or $null -Path/-LiteralPath value by vexx32 · Pull Request #8080 · PowerShell/PowerShell

Description: PR Summary Fix #5717. Fix #8076. Test-Path is expected to be almost exclusively a True/False response cmdlet, and the cases where it may error or return an unexpected result are a few too many at present (see above issues). This PR allows $null / empty value(s) to be passed to Test-Path without throwing parameter binding exceptions. It also adds additional logic to Test-Path such that passing it $null, '', or ' ' (or any pure whitespace string) returns $false instead of throwing an error or returning $true on a "path" that is nothing but whitespace. New behaviour: PS> Test-Path ' ' False PS> Test-Path '' False PS> Test-Path @() False Error conditions: PS> Test-Path $null PS> Test-Path $null, $null These are non-terminating errors. A small handful of tests predicated on Test-Path failing in these cases have been updated to simply transform the error into terminating via -ErrorAction, as it appears that the important part of the test was not Test-Path itself, but throwing a terminating error in specific code strictures. Tests for the additional behaviours have also been added. PR Checklist PR has a meaningful title Use the present tense and imperative mood when describing your changes Summarized changes Change is not breaking Make sure all .h, .cpp, .cs, .ps1 and .psm1 files have the correct copyright header This PR is ready to merge and is not Work in Progress. If the PR is work in progress, please add the prefix WIP: to the beginning of the title and remove the prefix when the PR is ready. User-facing changes Not Applicable OR User-facing Documentation needed Issue filed - Issue link: MicrosoftDocs/PowerShell-Docs#3165 Testing - New and feature Not Applicable or can only be tested interactively OR Make sure you've added a new test if existing tests do not effectively test the code changed Add [feature] if the change is significant or affects feature tests

Open Graph Description: PR Summary Fix #5717. Fix #8076. Test-Path is expected to be almost exclusively a True/False response cmdlet, and the cases where it may error or return an unexpected result are a few too many at p...

X Description: PR Summary Fix #5717. Fix #8076. Test-Path is expected to be almost exclusively a True/False response cmdlet, and the cases where it may error or return an unexpected result are a few too many at p...

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1313095 Add empty / null path handling to Test-Path vexx32 Oct 19, 2018 https://github.com/PowerShell/PowerShell/pull/8080/commits/13130954c6751cacdd3fa668f112856cf5fc2a6a
7d5735a Update tests to fail correctly under the sole remaining erroring cond… vexx32 Oct 19, 2018 https://github.com/PowerShell/PowerShell/pull/8080/commits/7d5735a2f0a2b4726f207065284517dd93317ec6
2f41783 Use quick-exit code paths instead of lengthy if/else vexx32 Oct 19, 2018 https://github.com/PowerShell/PowerShell/pull/8080/commits/2f41783737cbd4c8e69162c92a30a750f870538b
44417f5 Add non-terminating errors for null input vexx32 Oct 25, 2018 https://github.com/PowerShell/PowerShell/pull/8080/commits/44417f5d806a894fba23ec6dbedb6cec77a8491c
63e1b8f Reformat test file for readability vexx32 Oct 25, 2018 https://github.com/PowerShell/PowerShell/pull/8080/commits/63e1b8ff29716a31e4aa7cc450dc057005adf38e
d793658 Use more descriptive error ID vexx32 Oct 25, 2018 https://github.com/PowerShell/PowerShell/pull/8080/commits/d793658efe8101a6637c72d40572264dfad0430a
794e78b Add Tests for new behaviour vexx32 Oct 25, 2018 https://github.com/PowerShell/PowerShell/pull/8080/commits/794e78ba4bae8163c269af3f59d860f117644761
cae5294 Remove unnecessary blank line per StyleCop vexx32 Oct 25, 2018 https://github.com/PowerShell/PowerShell/pull/8080/commits/cae5294b03a39ca295e65789485076f380d21a6b
60810ca Add new tests vexx32 Oct 30, 2018 https://github.com/PowerShell/PowerShell/pull/8080/commits/60810ca085948377dd419b715fae724c5e4a9104
e731fab Clarify it name vexx32 Oct 30, 2018 https://github.com/PowerShell/PowerShell/pull/8080/commits/e731fabfbf2a52d37dd64645121054cfafb3b54f
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28cc91f Fix FullyQualifiedErrorID vexx32 Oct 31, 2018 https://github.com/PowerShell/PowerShell/pull/8080/commits/28cc91f9225f2f950c436344244bdb0005234eff
0be7bf1 Consolidate ErrorIDs to match vexx32 Oct 31, 2018 https://github.com/PowerShell/PowerShell/pull/8080/commits/0be7bf1f5a56edede09cc0d001b1b1e7e6cd4bfb
890fcb1 Add .resx file for TestPath vexx32 Nov 16, 2018 https://github.com/PowerShell/PowerShell/pull/8080/commits/890fcb12b5437384183b34afe3ac48aad4fd816d
cddfb79 Use resource file for error string vexx32 Nov 16, 2018 https://github.com/PowerShell/PowerShell/pull/8080/commits/cddfb790d796ab53057ec07f5620c0664ac0c724
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