Increase unit test coverage for oauth.ts to 100%

[mansisampat]

Discussion

• Increase unit test coverage for oauth.ts to 100%
• https://screenshot.googleplex.com/6y4mxpwYfT9Mj4J

Testing

• Test passing locally

[changeset-bot]

⚠️ No Changeset found

Latest commit: aa83460

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[google-oss-bot]

Size Report ¹

Affected Products

No changes between base commit (ab5c2a0) and merge commit (653955c).

Test Logs

• Base (ab5c2a0): https://github.com/firebase/firebase-js-sdk/actions/runs/16043102479
• Merge (653955c): https://github.com/firebase/firebase-js-sdk/actions/runs/16044046127

1. https://storage.googleapis.com/firebase-sdk-metric-reports/odoF5gSKLI.html

[google-oss-bot]

Size Analysis Report ¹

Affected Products

No changes between base commit (ab5c2a0) and merge commit (653955c).

Test Logs

• Base (ab5c2a0): https://github.com/firebase/firebase-js-sdk/actions/runs/16043102479
• Merge (653955c): https://github.com/firebase/firebase-js-sdk/actions/runs/16044046127

1. https://storage.googleapis.com/firebase-sdk-metric-reports/82bJmfb7fy.html

[NhienLam]

I think we should also update https://github.com/firebase/firebase-js-sdk/blob/main/.github/workflows/test-all.yml#L26 to have the same version.