Fragment Container Testing

Android Programming The Big Nerd Ranch Guide 5th를 학습하며 책에 기재된 Challenge에 대한 답을 기록한다.

 

문제는 FragmentContainer로 만들어진 Fragment에 대한 테스트 케이스를 작성하는 것.

 

package com.wookhyun.criminalintent

import androidx.fragment.app.testing.FragmentScenario
import androidx.fragment.app.testing.launchFragmentInContainer
import androidx.fragment.app.testing.withFragment
import androidx.lifecycle.Lifecycle
import androidx.test.core.app.ActivityScenario
import androidx.test.espresso.Espresso.onView
import androidx.test.espresso.action.ViewActions.click
import androidx.test.espresso.action.ViewActions.typeText
import androidx.test.espresso.matcher.ViewMatchers.withId
import androidx.test.ext.junit.runners.AndroidJUnit4
import org.junit.Assert.*

import org.junit.After
import org.junit.Before
import org.junit.Test
import org.junit.runner.RunWith

@RunWith(AndroidJUnit4::class)
class CrimeDetailFragmentTest{

    lateinit var fragmentScenario: FragmentScenario<CrimeDetailFragment>

    @Before
    fun setUp() {
        fragmentScenario = launchFragmentInContainer<CrimeDetailFragment>(
            initialState = Lifecycle.State.RESUMED
        )
    }

    @After
    fun tearDown() {
        fragmentScenario.close()
    }

    @Test
    fun test(){
        onView(withId(R.id.crime_solved)).perform(click())
        fragmentScenario.onFragment{fragment ->
            assertEquals(true, fragment.crime.isSolved)
        }

    }

    @Test
    fun testEditText(){
        onView(withId(R.id.crime_title)).perform(typeText("Hello"))
        fragmentScenario.onFragment{fragment ->
            assertEquals("Hello", fragment.crime.title)
        }
    }
}

물론 다른 방법도 있겠지만 다음과 같이 풀었다

 

http://developer.android.com/guide/fragments/test?hl=ko