我目前遇到的问题是，新添加的方法调用会在已经测试过的函数中自动进行测试，从而增加了测试覆盖率，尽管这些新方法没有显式测试。
原始代码：

import { Controller } from "@hotwired/stimulus"

export default class extends Controller {
    static targets = [ "name", "output" ];

    declare readonly nameTarget: HTMLInputElement;
    declare readonly outputTarget: HTMLElement;

    greet() {
        this.outputTarget.innerHTML = this.name;
    }

    get name() {
        return this.nameTarget.value
    }
}

字符串
对此进行测试：

import HelloController from '../controllers/hello_controller'
import { Application } from '@hotwired/stimulus';

describe("HelloController", () => {
    describe("greet", () => {
        beforeEach(() => {
            document.body.innerHTML = `<div data-controller="hello">
                <input class="input" data-hello-target="name"  type="text">
                <p class="output" data-hello-target="output"></p>
                <button data-action="click->hello#greet">Greet</button>
            </div>`;

            const application = Application.start();
            application.register("hello", HelloController);
        });

        it("greets Person with given name", () => {
            const input = document.querySelector(".input") as HTMLInputElement;
            const output = document.querySelector(".output");
            const button = document.querySelector("button");

            expect(output.innerHTML).toEqual("");

            input.value = "foo";
            button.click();

            expect(output.innerHTML).toEqual("foo");
        });
    });
});

型
现在，新的方法被添加到类（_doSomething）中：

import { Controller } from "@hotwired/stimulus"

export default class extends Controller {
    static targets = [ "name", "output" ];

    declare readonly nameTarget: HTMLInputElement;
    declare readonly outputTarget: HTMLElement;

    greet() {
        this.outputTarget.innerHTML = this.name;
        this._doSomething();
    }

    get name() {
        return this.nameTarget.value
    }

    _doSomething(): void {
        const wert = document.querySelector('body').getAttribute('data-ab-test');
    }
}

型
测试未变更。
如果我再上《笑话》的话。新增方法100%覆盖。虽然没有测试。
在我看来，新方法应该被认为是未经测试的，代码覆盖率应该降低。但是覆盖率保持在100%，并且新方法被显示为经过测试的。我错过了什么？