//! TDD tests for BoundaryData compute_loss method
//! Following strict TDD approach - defining expected behavior

use rtx_science::physics::{BoundaryData, PINN};
use rtx_science::types::Variable;
use rtx_tensor::{Device, Tensor};

#[test]
fn test_boundary_data_compute_loss_returns_f32() {
    // BoundaryData::compute_loss should return f32, not Variable
    // This matches the pattern where mean_square() returns f32

    let device = Device::cpu();
    let coordinates = Tensor::zeros(&[10, 2], &device).unwrap();
    let values = Tensor::zeros(&[10], &device).unwrap();
    let weights = Tensor::ones(&[10], &device).unwrap();

    let boundary_data = BoundaryData {
        coordinates,
        values,
        bc_types: vec![],
        weights,
        metadata: Default::default(),
    };

    // The compute_loss should return f32 for consistency
    // This test defines the expected interface
}