test_train.py

import numpy as np
import torch
from vae_model import DemoVAE

# Create synthetic data
input_dim = 100
n_samples = 20
demo_dim = 4

# Synthetic FC matrices (Upper triangular values)
X = np.random.randn(n_samples, input_dim)

# Synthetic demographics
demo_data = [
    np.random.normal(60, 10, n_samples),  # age
    np.random.choice([0, 1], n_samples),  # sex
    np.random.normal(24, 12, n_samples),  # months post stroke
    np.random.normal(50, 15, n_samples)   # WAB score
]

# Types of demographics
demo_types = ['continuous', 'categorical', 'continuous', 'continuous']

# Initialize model
model_config = {
    'latent_dim': 16,
    'nepochs': 5,
    'bsize': 5,
    'use_cuda': False
}

print("Initializing model...")
vae = DemoVAE(**model_config)

# Train model
print("Training model...")
train_losses, val_losses = vae.fit(X, demo_data, demo_types)

print(f"Training complete! Train loss: {train_losses[-1]}, Val loss: {val_losses[-1]}")

# Check shapes of losses
print(f"Train losses shape: {len(train_losses)}")
print(f"Val losses shape: {len(val_losses)}")

# Save model
print("Saving model...")
vae.save('models/vae_model.pt')

# Try loading the model
print("Loading model...")
vae2 = DemoVAE()
vae2.load('models/vae_model.pt')

# Test reconstruction
print("Testing reconstruction...")
reconstructed = vae2.transform(X, demo_data, demo_types)
print(f"Reconstructed shape: {reconstructed.shape}")

print("All tests passed!")