package main

import (
	"testing"

	"makarna/pkg/tensor"
)

func TestParseLayerMap(t *testing.T) {
	placements := parseLayerMap(5, "0-1:gpu0,2-3:gpu1,4:cpu")
	if len(placements) != 5 {
		t.Fatalf("expected 5 placements, got %d", len(placements))
	}
	expectPlacement(t, placements[0], tensor.CUDA, 0)
	expectPlacement(t, placements[1], tensor.CUDA, 0)
	expectPlacement(t, placements[2], tensor.CUDA, 1)
	expectPlacement(t, placements[3], tensor.CUDA, 1)
	expectPlacement(t, placements[4], tensor.CPU, -1)
}

func expectPlacement(t *testing.T, p tensor.DevicePlacement, device tensor.DeviceType, gpu int) {
	if p.Type != device || p.GPU != gpu {
		t.Fatalf("expected device %v gpu %d, got %v gpu %d", device, gpu, p.Type, p.GPU)
	}
}