如何测试 Espresso 是否禁用或启用了 NavigationView 菜单项？

Question

我有一个 NavigationView 菜单，其中一些菜单项在用户未登录时应该被禁用：

private void setupNavigationViewMenu(boolean isUserLoggedIn) {
    Menu menu = mNavigationView.getMenu();
    menu.findItem(R.id.item_charge_cards).setEnabled(isUserLoggedIn);
    menu.findItem(R.id.item_charge_sessions).setEnabled(isUserLoggedIn);
    menu.findItem(R.id.item_invoices).setEnabled(isUserLoggedIn);
}

我想创建一个 Espresso 测试，它将断言菜单项确实被禁用。

我编写了以下测试，但它失败了：

@Test
public void navigationMenuItems_AreDisabled() {
    openNavigationDrawer();
    onView(getNavigationItemWithString(R.string.navigation_view_item_charging_cards))
            .check(matches(not(isEnabled())));
    onView(getNavigationItemWithString(R.string.navigation_view_item_charging_sessions))
            .check(matches(not(isEnabled())));
    onView(getNavigationItemWithString(R.string.navigation_view_item_invoices))
            .check(matches(not(isEnabled())));
}

public static Matcher<View> getNavigationItemWithString(String string) {
    return allOf(isAssignableFrom(AppCompatCheckedTextView.class), withText(string));
}

堆栈跟踪：

android.support.test.espresso.base.DefaultFailureHandler$AssertionFailedWithCauseError: 'not is enabled' doesn't match the selected view.
Expected: not is enabled
Got: "AppCompatCheckedTextView{id=2131624121, res-name=design_menu_item_text, visibility=VISIBLE, width=651, height=126, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, root-is-layout-requested=false, has-input-connection=false, x=42.0, y=0.0, text=Laadpassen, input-type=0, ime-target=false, has-links=false, is-checked=false}"
...

你对如何编写正确的测试有什么建议吗？

Answer 1

一个NavigationView菜单项不是单个视图，而是一个ViewGroup，所以启用状态应用于NavigationMenuItemView，而不是AppCompatCheckedTextView。为了修复您的测试，您必须使用以下匹配器在视图层次结构中找到正确的布局：

public static Matcher<View> getNavigationItemWithString(String string) {
    Matcher<View> childMatcher = allOf(isAssignableFrom(AppCompatCheckedTextView.class), withText(string));
    return allOf(isAssignableFrom(NavigationMenuItemView.class), withChild(childMatcher));
}

如何测试 Espresso 是否禁用或启用了 NavigationView 菜单项？

How to test if a NavigationView menu item is disabled or enabled with Espresso?

android

android-espresso

navigationview

android-navigationview