@W-21304863: Add Tableau OAuth E2E tests

[anyoung-tableau]

• These changes introduce E2E tests for Tableau MCP with OAuth issuer as the Tableau AuthZ server.
• They use Playwright to automate the Tableau sign in flow in the browser.
• Until we have a stable test environment in Stage the tests will not run as part of CI.
• All tool tests are basic and only test happy path. list-pulse-metric-subscriptions is skipped due to user ID missing because it's not provided in the access token for users without MFA enabled.

[Copilot]

Pull request overview

Adds Playwright-based E2E coverage for Tableau MCP OAuth flows where the OAuth issuer is the Tableau AuthZ server, exercising a number of MCP tools after browser-driven sign-in/consent.

Changes:

• Introduces a Playwright test suite (tests/oauth/tableau-authz) with OAuth login/consent automation and tool-level assertions.
• Adds a custom OAuth-capable MCP client + Playwright fixtures to authenticate once per worker and reuse across tests.
• Adds Playwright configuration, npm script/dependency, and a composite GitHub Action stub to run these tests.

Reviewed changes

Copilot reviewed 32 out of 34 changed files in this pull request and generated 24 comments.

Show a summary per file

File	Description
tests/oauth/tableau-authz/tests/testEnv.ts	Helpers to resolve known Tableau content IDs from env + tests/constants.
tests/oauth/tableau-authz/tests/searchContent.test.ts	E2E test for search-content.
tests/oauth/tableau-authz/tests/queryDatasource.test.ts	E2E test for query-datasource using VizQL Data Service schema.
tests/oauth/tableau-authz/tests/oauth.test.ts	Sanity check that all tools are listed.
tests/oauth/tableau-authz/tests/listWorkbooks.test.ts	Skipped E2E test for list-workbooks.
tests/oauth/tableau-authz/tests/listViews.test.ts	Skipped E2E test for list-views.
tests/oauth/tableau-authz/tests/listPulseMetricsFromMetricIds.test.ts	E2E test for pulse metrics lookup by metric IDs.
tests/oauth/tableau-authz/tests/listPulseMetricsFromMetricDefinitionId.test.ts	E2E test for pulse metrics lookup by definition ID.
tests/oauth/tableau-authz/tests/listPulseMetricSubscriptions.test.ts	Skipped E2E test for pulse subscriptions.
tests/oauth/tableau-authz/tests/listPulseMetricDefinitionsFromDefinitionIds.test.ts	E2E test for pulse metric definitions lookup by IDs.
tests/oauth/tableau-authz/tests/listDatasources.test.ts	Skipped E2E test for list-datasources.
tests/oauth/tableau-authz/tests/listAllPulseMetricDefinitions.test.ts	E2E test for listing all pulse metric definitions.
tests/oauth/tableau-authz/tests/getWorkbook.test.ts	E2E test for get-workbook.
tests/oauth/tableau-authz/tests/getViewImage.test.ts	E2E test for get-view-image.
tests/oauth/tableau-authz/tests/getViewData.test.ts	Skipped E2E test for get-view-data.
tests/oauth/tableau-authz/tests/getDatasourceMetadata.test.ts	E2E test for get-datasource-metadata.
tests/oauth/tableau-authz/tests/generatePulseMetricValueInsightBundleTool.test.ts	E2E test for generating a pulse insight bundle.
tests/oauth/tableau-authz/tests/generatePulseInsightBriefTool.test.ts	E2E test for generating a pulse insight brief (AI-enabled site).
tests/oauth/tableau-authz/tests/base.ts	Playwright test fixture wiring for env + OAuth client.
tests/oauth/tableau-authz/testEnv.ts	Loads/validates OAuth test credentials from .env.oauth.
tests/oauth/tableau-authz/oauthClient.ts	MCP client wrapper using Streamable HTTP transport + OAuth provider + parsing helpers.
tests/oauth/tableau-authz/flows/loginFlow.ts	Page-object for Tableau login steps.
tests/oauth/tableau-authz/flows/flow.ts	Base page-object class.
tests/oauth/tableau-authz/flows/consentFlow.ts	Page-object for granting consent when prompted.
tests/oauth/tableau-authz/fixtures/env.ts	Playwright fixture to provide validated env to tests.
tests/oauth/tableau-authz/fixtures/connectOAuthClient.ts	Worker fixture to run OAuth flow via Playwright and provide authenticated client.
tests/oauth/tableau-authz/env.oauth.example.list	Example env file for local OAuth test credentials.
tests/e2e/getDatasourceMetadata.test.ts	Improves invariant error message.
tests/constants.ts	Adds server/site/content IDs for additional Tableau test environments.
playwright.config.ts	Adds Playwright config and validates env for starting the MCP server.
package.json	Adds test:oauth:tableau script and Playwright dev dependency.
package-lock.json	Locks Playwright dependency tree.
.gitignore	Ignores Playwright output directories.
.github/actions/run-oauth-tableau-authz-tests/action.yml	Composite action stub to run the Playwright OAuth suite.

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[jarhun88]

im abit confused on how this is used

[anyoung-tableau]

This file contains the metadata for various content keyed by Tableau pod and site. It makes it so, say, the query-datasource test doesn't first have to call the list-datasources tool to figure out what data source luid to use. Ideally these tests could run against any site, but we're not there yet.

[mattcfilbert]

lgtm!