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GeezerVison is showing github.com — Ensure all errors are returned for Test-Json with List output format by anamnavi · Pull Request #28273 · PowerShell/PowerShell

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@anamnavi

@anamnavi Anam Navied (anamnavi) commented Oct 28, 2026 •
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PR Summary

This pull request makes a small but important change to the default output format used in the TestJsonCommand class. The output format for JSON evaluation has been switched from hierarchical to list format to better suit the intended use case for 7.6.

  • Changed the default OutputFormat in the BeginProcessing method of TestJsonCommand from Hierarchical to List (src/Microsoft.PowerShell.Commands.Utility/commands/utility/TestJsonCommand.cs) as OutputFormat.Hierarchical is supported for 7.7+ only.

PR Context

Resolves #28218 #28245

PR Checklist

  • PR has a meaningful title
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  • Make sure all .h, .cpp, .cs, .ps1 and .psm1 files have the correct copyright header
  • This PR is ready to merge. If this PR is a work in progress, please open this as a Draft Pull Request and mark it as Ready to Review when it is ready to merge.
  • Breaking changes
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    • Experimental feature(s) needed
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  • User-facing changes
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    • Documentation needed
      • Issue filed:
  • Testing - New and feature
    • N/A or can only be tested interactively
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    • Make sure you've added a new test if existing tests do not effectively test the code changed

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@anamnavi
Ensure all errors are returned for Test-Json with List output format
8979460
Copilot AI balanced review requested due to automatic review settings October 28, 2026 16:18
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@anamnavi Anam Navied (anamnavi) added the CL-General Indicates that a PR should be marked as a general cmdlet change in the Change Log label Oct 28, 2026
Copilot started reviewing on behalf of Anam Navied (anamnavi) October 28, 2026 16:18
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@anamnavi Anam Navied (anamnavi) added the Backport-7.6.x-Consider label Oct 28, 2026
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🟢 Approval recommended

No active review issues are recorded for the switch to list-format JSON schema evaluation.

No open issues 🎉

What changed in this PR

Updates Test-Json to use list-format schema evaluation for PowerShell 7.6, aiming to return all validation errors without relying on hierarchical output support intended for 7.7+.

Changes:

  • Changes EvaluationOptions.OutputFormat from Hierarchical to List in BeginProcessing.
File Description
src/​Microsoft.PowerShell.Commands.Utility/​commands/​utility/​TestJsonCommand.cs Switches JSON schema evaluation to list output.

Review effort: Balanced

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adityapatwardhan
Aditya Patwardhan (adityapatwardhan) approved these changes Oct 28, 2026
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@daxian-dbw Dongbo Wang (daxian-dbw) added the Backport-7.7.x-Consider label Oct 28, 2026
@daxian-dbw

Dongbo Wang (daxian-dbw) commented Oct 28, 2026 •
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Anam Navied (@anamnavi) Please add fix #<issue-number> in the PR description, so the issue can be resolved properly when you merge the PR.
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@daxian-dbw
Dongbo Wang (daxian-dbw) merged commit af43aa9 into PowerShell:release/v7.6.10 Oct 28, 2026
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This was referenced Oct 28, 2026
Test-Json in 7.6.7 writes no error for violations nested below the first level (e.g. array items) #28218
Closed
Test-Json fails with UnresolvedJsonSchemaRef when "$schema" is http://json-schema.org/schema (regression in 7.6.7, 7.5.12, 7.4.21) #28245
Closed
@daxian-dbw Dongbo Wang (daxian-dbw) removed Backport-7.6.x-Consider Backport-7.7.x-Consider labels Nov 3, 2026
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@adityapatwardhan Aditya Patwardhan (adityapatwardhan) adityapatwardhan approved these changes

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@anamnavi @daxian-dbw @adityapatwardhan
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