基本上，我试图检查当所有组件呈现时，屏幕中是否有一个"过滤器"标题，但由于某种原因，React测试库没有检测到它，它只是向我抛出了这个错误。
我会让这里所有的代码和图像的错误.

FilterBox.js

import React from 'react';
import './FiltersBox.css';

function FiltersBox({ onSortSelected, onCategorySelected }) {
    function sortByPrice(e) {
        onSortSelected(e.target.value);
    }

    function sortByCategory(e) {
        onCategorySelected(e.target.value);
    }

    return (
        <div className='items_container-filter_box'>
            <h3 className='filter_box-title'>Filters</h3>

            <div className='filter_box-filters_container'>
                <div className='filter_box-filter filter_box-first_filter'>
                    <h5>By Price:</h5>

                    <div className='filter_box-select'>
                        <select onChange={sortByPrice}>
                            <option value='none'>-</option>
                            <option value='ascending'>Ascending</option>
                            <option value='descending'>Descending</option>
                        </select>
                    </div>
                </div>

                <div className='filter_box-filter filter_box-second_filter'>
                    <h5>By Category:</h5>

                    <div className='filter_box-select'>
                        <select onChange={sortByCategory}>
                            <option value='none'>-</option>
                            <option value="men's clothing">Men&apos;s Clothing</option>
                            <option value="women's clothing">Women&apos;s Clothing</option>
                            <option value='jewelery'>Jewelery</option>
                            <option value='electronics'>Electronics</option>
                        </select>
                    </div>
                </div>
            </div>
        </div>
    );
}

MainSection.test.js

import React from 'react';
import { render, screen } from '@testing-library/react';
import MainSection from './MainSection.js';

beforeAll(() => {
    render(<MainSection />);
});

test('Check if renders the Search Bar', () => {
    const textInput = screen.getByTestId('text-input');

    expect(textInput).toBeInTheDocument();
    expect(textInput).toHaveAttribute('type', 'text');
    expect(textInput).toHaveAttribute('placeholder', 'Search here!');
});

test('Check if renders the Filters Box', () => {
    const filterTitle = screen.getByText(/Filters/i);

    const filterLabelByPrice = screen.getByText(/by price:/i);
    const filterLabelByCategory = screen.getByText(/by category:/i);

    const filtersComboBoxes = screen.getAllByRole('combobox');

    expect(filterTitle).toBeInTheDocument();

    expect(filterLabelByPrice).toBeInTheDocument();
    expect(filterLabelByCategory).toBeInTheDocument();

    expect(filtersComboBoxes).toHaveLength(2);
});

我什么都试过了，但没有成功.

• • 更新日期：**

我尝试了@nbjorling的用户解决方案。我想它现在工作了...因为它仍然给我错误，但两个测试都通过了（绿色）。