如何对读取文件然后将内容存储到ArrayList进行Junit测试

import org.junit.Test;
import static org.junit.Assert.*;

import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Scanner;

public class FileReadTest {

    public ArrayList<String> readFile(String filePath) throws FileNotFoundException {
        ArrayList<String> contentList = new ArrayList<>();
        File file = new File(filePath);
        Scanner scanner = new Scanner(file);
        while (scanner.hasNextLine()) {
            String line = scanner.nextLine();
            contentList.add(line);
        }
        scanner.close();
        return contentList;
    }

    @Test
    public void testReadFile() {
        String filePath = "path/to/your/file.txt";
        ArrayList<String> expectedContent = new ArrayList<>();
        expectedContent.add("Line 1");
        expectedContent.add("Line 2");
        expectedContent.add("Line 3");

        try {
            ArrayList<String> actualContent = readFile(filePath);
            assertEquals(expectedContent, actualContent);
        } catch (FileNotFoundException e) {
            fail("File not found.");
        }
    }
}