Add VirtualAuthenticator tests to Ruby examples

[tcannonfodder]

User description

Description

• Added tests for the Ruby example project that verify & document the VirtualAuthenticator API
• Note that one test is failing; I wasn't able to figure out what incantation of Base64 decoding/encoding was necessary

Motivation and Context

• Adding these tests helps document how the Selenium library can be used with virtual authenticators

Types of changes

• Code example added (and I also added the example to all translated languages)

Checklist

• I have read the contributing document.
• I have used hugo to render the site/docs locally and I am sure it works.

This is a new attempt of #1536, using the latest trunk

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PR Type

Tests

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Description

• Add comprehensive VirtualAuthenticator test suite for Ruby

• Test authenticator options configuration and JSON serialization

• Test credential management (resident/non-resident keys)

• Test protocol-specific behaviors (U2F vs CTAP2)

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Diagram Walkthrough

flowchart LR
  A["VirtualAuthenticatorOptions"] --> B["Configuration Tests"]
  C["VirtualAuthenticator"] --> D["Authenticator Management"]
  C --> E["Credential Operations"]
  E --> F["Resident Keys"]
  E --> G["Non-Resident Keys"]
  D --> H["Protocol Validation"]

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File Walkthrough

Relevant files

Tests

virtual_authenticator_options_spec.rb VirtualAuthenticatorOptions configuration tests                    examples/ruby/spec/virtual_authenticator/virtual_authenticator_options_spec.rb Test VirtualAuthenticatorOptions configuration methods Verify property setters and getters functionality Test JSON serialization with as_json method +27/-0    virtual_authenticator_spec.rb VirtualAuthenticator API comprehensive tests                          examples/ruby/spec/virtual_authenticator/virtual_authenticator_spec.rb Test virtual authenticator registration and removal Test resident and non-resident credential creation Test protocol-specific behaviors (U2F vs CTAP2) Test credential management operations +161/-0

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[netlify]

👷 Deploy request for selenium-dev pending review.

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🔨 Latest commit	0a9fcb4

[qodo-code-review]

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⏱️ Estimated effort to review: 2 🔵🔵⚪⚪⚪

🧪 PR contains tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Possible Assertion Mismatch The test compares the stored credential's private key to the Base64-encoded string source, but the credential was created from decoded bytes. Verify whether credential.private_key returns Base64 or raw bytes and align the assertion accordingly. expect(credential_id).to eq(credential_list[0].id) expect(private_key).to eq(credential_list[0].private_key) end Key Format/Algorithm Credentials for WebAuthn/U2F/CTAP2 typically use EC (P-256) keys, not RSA. Using an RSA DER may not match expected private key format. Confirm that Selenium::WebDriver::Credential expects an EC key (PKCS#8 or raw) and adjust key generation/encoding. let(:private_key) { Base64.strict_encode64(OpenSSL::PKey::RSA.generate(2048).private_to_der) } Base64 Handling The tests decode a Base64 string to bytes for creation but later expect Base64 on retrieval; ensure consistent encode/decode and consider using Base64.strict_encode64(credential.private_key_bytes) or comparing byte arrays directly. decoded_private_key = Base64.strict_decode64(private_key).bytes resident_credential = Selenium::WebDriver::Credential.non_resident( id: credential_id, private_key: decoded_private_key, rp_id: "localhost"

[qodo-code-review]

PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Impact
High-level	Fix private key encoding mismatch The tests mix Base64-decoded byte arrays when adding credentials but later expect credential.private_key to equal the original Base64 string, which is inconsistent and likely the failing test. Standardize on a single representation (e.g., always pass/compare Base64url per WebAuthn or return bytes consistently) and adjust add_credential inputs and assertions to match what Selenium returns for credential.private_key across U2F/CTAP2. Examples: examples/ruby/spec/virtual_authenticator/virtual_authenticator_spec.rb [122-126] decoded_private_key = Base64.strict_decode64(private_key).bytes resident_credential = Selenium::WebDriver::Credential.resident( id: credential_id, private_key: decoded_private_key, examples/ruby/spec/virtual_authenticator/virtual_authenticator_spec.rb [138] expect(private_key).to eq(credential_list[0].private_key) Solution Walkthrough: Before: # In 'examples/ruby/spec/virtual_authenticator/virtual_authenticator_spec.rb' let(:private_key) { Base64.strict_encode64(...) # A Base64 string } it "Can get a credential" do # ... decoded_private_key = Base64.strict_decode64(private_key).bytes # Decoded to byte array resident_credential = Selenium::WebDriver::Credential.resident( private_key: decoded_private_key, # ... ) authenticator.add_credential(resident_credential) # ... expect(private_key).to eq(credential_list[0].private_key) # Compares Base64 string with returned value end After: # In 'examples/ruby/spec/virtual_authenticator/virtual_authenticator_spec.rb' let(:private_key) { Base64.strict_encode64(...) # A Base64 string } it "Can get a credential" do # ... # Pass the Base64 string directly if the API expects it resident_credential = Selenium::WebDriver::Credential.resident( private_key: private_key, # ... ) authenticator.add_credential(resident_credential) # ... # The comparison is now consistent expect(private_key).to eq(credential_list[0].private_key) end Suggestion importance[1-10]: 9 __ Why: This suggestion correctly identifies a critical data encoding mismatch for the private_key, which is the explicit cause of the failing test mentioned in the PR description.	High
General	Broaden error expectation post-removal After remove!, some drivers raise a different error (e.g., NoSuchAlertError-like or generic WebDriverError) or return empty lists. Broaden the expectation to avoid flaky tests across driver versions. examples/ruby/spec/virtual_authenticator/virtual_authenticator_spec.rb [24-32] it "Removes a virtual authenticator" do authenticator = driver.add_virtual_authenticator(options) authenticator.remove! expect { authenticator.credentials - }.to raise_error(Selenium::WebDriver::Error::InvalidArgumentError) + }.to raise_error(/InvalidArgument|WebDriverError|NoSuch/i) end Apply / Chat Suggestion importance[1-10]: 7 __ Why: The suggestion correctly identifies a potential for test flakiness by proposing to catch a wider range of driver-specific errors, which enhances the test's robustness across different environments.	Medium
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[diemol]

@tcannonfodder, could you please check the failures?