如何使pytest-html单个html报告结果文件的所有行都默认为折叠状态？

要使pytest-html单个html报告结果文件的所有行都默认为折叠状态，可以通过自定义pytest插件来实现。下面是一个实现的示例：

创建一个pytest插件文件，例如pytest_custom_plugin.py。
在插件文件中导入必要的模块和函数：

import pytest
from _pytest.config import Config
from _pytest.reports import TestReport
from _pytest.terminal import TerminalReporter

定义一个自定义的pytest插件类，继承自pytest.Plugin：

class CustomPlugin(pytest.Plugin):
    def __init__(self):
        super().__init__()
        self.terminal_reporter = None

    def pytest_configure(self, config: Config):
        self.terminal_reporter = config.pluginmanager.getplugin("terminalreporter")

    def pytest_html_report_title(self, report: TestReport):
        if self.terminal_reporter:
            self.terminal_reporter.write_line("Generating HTML report...")

    def pytest_html_results_table_header(self, cells):
        cells.insert(1, html.th("Details", class_="sortable", col="details"))

    def pytest_html_results_table_row(self, report: TestReport, cells):
        cells.insert(1, html.td(report.longreprtext, class_="col-details"))

    def pytest_html_results_table_cell(self, report: TestReport, cell):
        if cell.get("class") == "col-details":
            cell["colspan"] = str(len(cell.parent.contents) - 1)

    def pytest_html_report_table_row(self, report: TestReport, cells):
        if report.passed:
            cells.insert(1, html.td("Passed", class_="col-result"))
        elif report.failed:
            cells.insert(1, html.td("Failed", class_="col-result"))
        elif report.skipped:
            cells.insert(1, html.td("Skipped", class_="col-result"))
        elif report.error:
            cells.insert(1, html.td("Error", class_="col-result"))
        else:
            cells.insert(1, html.td("Unknown", class_="col-result"))

    def pytest_html_report_table_cell(self, report: TestReport, cell):
        if cell.get("class") == "col-result":
            cell["colspan"] = str(len(cell.parent.contents) - 1)

在插件文件的末尾添加以下代码，注册插件：

def pytest_html_report_title(report):
    return "Custom HTML Report"

def pytest_configure(config):
    config.pluginmanager.register(CustomPlugin())