Android Espresso：检查 TextView 是否显示来自资源的格式化字符串

Question

Suppose you have a formatted string like this:

<string name="saving">You saved %1$s with %2$s</string>

now if you want to check if your TextView is showing it correctly, so naturally, something like this would work:

 Espresso.onView(withId(R.id.tv))
            .check(matches(withText(R.string.saving)))

but it doesn't and I cannot check the text with hardcoded strings because it might be on another language. so is there even a way for that?

Answer 1

Maybe something like:

Espresso.onView(withId(R.id.tv))
        .perform(object :ViewAction{
            override fun getDescription(): String {
                return "Normalizing the string"
            }

            override fun getConstraints(): Matcher<View> {
                return isAssignableFrom(TextView::class.java)
            }

            override fun perform(uiController: UiController?, view: View?) {
                val tv = view as TextView
                if (tv.text.matches(Regex("You saved (.)*? with (.)*"))) {
                    tv.text = "You saved %1\$s with %2\$s"
                }
            }
        }).check(matches(withText(R.string.saving)))