const { sequentNode, linkSequentNode } = require("../../src/utils/sequentAst.js");

// linkSequentNode test
test('linkSequentNode could work correctly for node', () => {
    const inputA = new sequentNode("A");
    const inputB = new sequentNode("B");
    const output = linkSequentNode(inputA, inputB);

    const expected = new sequentNode("A", "", [inputB]);
    expect(output).toEqual(expected);
});

test('linkSequentNode could work correctly for node', () => {
    const inputA = new sequentNode("A");
    const inputB = new sequentNode("B");
    const output = linkSequentNode(inputA, inputB);
    const output1 = linkSequentNode(output, inputB);
    expect(output1).toEqual(new sequentNode("A", "", [inputB, inputB]));
});

test('linkSequentNode could report error when adding nodes on a full node', () => {
    const inputA = new sequentNode("A");
    const inputB = new sequentNode("B");
    const output = linkSequentNode(inputA, inputB);
    const output1 = linkSequentNode(output, inputB);
    expect(() => linkSequentNode(output1, inputB)).toThrow('Addition failed, this node is already full');

});