package main

import (
	"testing"

	"github.com/stretchr/testify/require"
)

func treeTestNode(level, index int, text string) Node {
	return Node{
		Level: level,
		Index: index,
		Text:  text,
		Size:  len(text),
	}
}

// treeReadNode reads the node (l, i) of tree, which must be built.
func treeReadNode(t *testing.T, tree *Tree, level, index int) Node {
	t.Helper()

	node, built, err := tree.Node(level, index)
	require.NoError(t, err)
	require.True(t, built, "node (%d, %d)", level, index)

	return node
}

// treeIsBuilt tells if the node (l, i) of tree is built.
func treeIsBuilt(t *testing.T, tree *Tree, level, index int) bool {
	t.Helper()

	built, err := tree.Built(level, index)
	require.NoError(t, err)

	return built
}