package graph

import (
	"testing"

	"makarna/pkg/tensor"
)

func TestBuildPlanUsesLayerDevices(t *testing.T) {
	spec := RequestSpec{
		ID:           "req",
		MaxContext:   8,
		BlockSize:    4,
		NumLayers:    3,
		UseAttention: true,
		LayerDevices: []tensor.DevicePlacement{
			{Type: tensor.CUDA, GPU: 0},
			{Type: tensor.CUDA, GPU: 1},
			{Type: tensor.CPU, GPU: -1},
		},
	}
	plan := BuildPlan(spec)
	if len(plan.Layers) != 3 {
		t.Fatalf("expected 3 layers, got %d", len(plan.Layers))
	}
	if plan.Layers[0].Device.GPU != 0 || plan.Layers[1].Device.GPU != 1 || plan.Layers[2].Device.Type != tensor.CPU {
		t.Fatalf("unexpected devices %+v", plan.Layers)
	}
}