test: add previews and unit tests for call feature
Previews (CallScreenPreviews.kt):
- PreviewCallingScreen: outgoing call "Calling..." state
- PreviewConnectingScreen: WebRTC connecting state
- PreviewCallEndedScreen: call ended state
- PreviewIncomingCallScreen: incoming call with accept/reject
- PreviewConnectedCallScreen: active call with controls
- PreviewConnectedCallMuted: muted mic + speaker on state
All use ThemeComparisonColumn for dark/light side-by-side
Unit tests - quartz (CallTagsTest.kt):
- CallIdTag parse/assemble/roundtrip, edge cases (empty, wrong name)
- CallTypeTag parse voice/video, unknown types, roundtrip
- CallType.fromString validation
Unit tests - quartz (CallEventsTest.kt):
- All 6 event kinds have correct constants (25050-25055)
- CallOfferEvent.build includes call-id, call-type, p, expiration tags
- Expiration is 20 seconds
- Answer/ICE/Hangup/Reject/Renegotiate template content verification
Unit tests - amethyst (IceCandidateSerializationTest.kt):
- Parse ICE candidate JSON with all fields
- Parse with different sdpMLineIndex
- Parse with missing fields (defaults)
- Serialize produces valid JSON
- Roundtrip serialization preserves all fields
https://claude.ai/code/session_017hZm7yu7CzmcQgZGSaqSXS
Claude
f344f00e9d