get<V> method

V get<V>(TestVariant<V> variant)

Retrieves the active configurations for a specific TestVariant instance.

Since MatrixVariant orchestrates the lifecycle, it extracts the current active value from the inner mapping matching the provided variant reference.

Throws a StateError if triggered outside the execution bounds of an active test slice. Throws an ArgumentError if the provided variant was not supplied in the matrix configuration.

Implementation

V get<V>(TestVariant<V> variant) {
  final activeMap = _current;
  if (activeMap == null) {
    throw StateError(
      'Matrix values cannot be accessed outside the lifecycle execution bounds of a running test.',
    );
  }

  if (!activeMap.containsKey(variant)) {
    throw ArgumentError(
      'The requested variant instance was not provided in this MatrixVariant configuration.',
    );
  }

  // Direct lookup from the map snapshot ensuring 100% type-safe return without type scanning
  return activeMap[variant] as V;
}