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sdk-test-cpp C++ test module

Exercise the functionality of the SpacetimeDB C++ bindings API surface, modeling all combinations of types, with several examples of tables, indexes, and reducers.

Used to validate C++ bindings functionality and ensure parity with Rust/C# implementations.

Note: Mirrors functionality from modules/sdk-test and modules/sdk-test-cs.

Building

cd modules/sdk-test-cpp

spacetime build -p .

The built WASM module will be at build/lib.wasm.

Testing

# Start SpacetimeDB
spacetime start

# Publish the module
spacetime publish . test-db --delete-data

# Verify module schema
spacetime describe test-db

# Call example reducer
spacetime call test-db add_player '"Alice"'

# View logs
spacetime logs test-db -f

Module Contents

lib.cpp contains comprehensive testing of:

  • All primitive types (integers, floats, bool, string)
  • Special types (Identity, ConnectionId, Timestamp, TimeDuration)
  • Collections (vectors, optionals)
  • Custom structs and enums
  • Table constraints (PrimaryKey, Unique, AutoInc, indexes)
  • Lifecycle reducers (init, connect, disconnect)
  • CRUD operations

For C++ bindings usage documentation, see crates/bindings-cpp/.