interactive-extension-testing

Testing & Quality

Guide for setting up the multi-root PowerShell VS Code extension/PSES dev workspace. Use when asked to open the dev workspace, interactively test the extension, set up PSES for F5 debugging, or open pwsh-extension-dev workspace.

QUICK START

How to use this skill

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Copy the prompt below and paste it into your agent.
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Prompt to paste

I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/PowerShell/vscode-powershell/blob/HEAD/.github/skills/interactive-extension-testing/SKILL.md

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Interactive Extension Testing

Read .github/copilot-instructions.md "Build, Lint, and Test" and "PSES and Cross-Repo Work" first — this skill only adds the worktree setup details for hands-on F5 testing.

Use this when the goal is to open pwsh-extension-dev.code-workspace and run F5 → Launch Extension against a locally-built PowerShellEditorServices (PSES).

Prerequisites

Follow .github/copilot-instructions.md for the repository build dependencies and the modules/ symlink model.
Confirm these commands are available: pwsh, dotnet, code, and the PowerShell InvokeBuild module.
Have a PSES checkout that can be used as <pses-checkout>.

Setup

Build PSES first. In <pses-checkout>, run the PSES build task (for example, Invoke-Build Build) so <pses-checkout>/module/PowerShellEditorServices/bin exists. Without that directory, the extension Build task in vscode-powershell.build.ps1 asserts Extension requires PSES.
Ensure the workspace can resolve the Server root. The workspace defines Client as <extension-repo> and Server as ../PowerShellEditorServices, so a worktree parent may need a sibling link:
```
ln -s <pses-checkout> <extension-repo-parent>/PowerShellEditorServices
```
Ensure the extension can load the runtime PSES module. modules/ is gitignored and should point at the built PSES module directory:
```
ln -s <pses-checkout>/module <extension-repo>/modules
```
In a normal sibling clone, Invoke-Build RestoreEditorServices in vscode-powershell.build.ps1 creates this modules link and builds PSES. In a worktree or fresh checkout, create the sibling link first if Get-EditorServicesPath cannot resolve ../PowerShellEditorServices/PowerShellEditorServices.build.ps1.

Open the dev workspace:

cd <extension-repo>
code pwsh-extension-dev.code-workspace

Launch interactively. In VS Code, use F5 → Launch Extension. The workspace also defines Launch Extension - Temp Profile; see pwsh-extension-dev.code-workspace for the current launch/task wiring.

Verify

cd <extension-repo>
readlink modules
test -d modules/PowerShellEditorServices/bin

Then confirm F5 starts the extension host and attaches to PSES.

Cleanup

Both links are reversible and not under version control: modules is gitignored, and the sibling PowerShellEditorServices link lives outside <extension-repo>. Cleanup is just:

rm <extension-repo>/modules
rm <extension-repo-parent>/PowerShellEditorServices

How It Resolves

Use pwsh-extension-dev.code-workspace as the source of truth for roots and launch configs. Use Get-EditorServicesPath, RestoreEditorServices, and Build in vscode-powershell.build.ps1 as the source of truth for how the extension locates, links, builds, and asserts the local PSES module.