Add MediaDetailPagerFragment Unit Tests (#4362)

app/src/test/kotlin/fr/free/nrw/commons/media/MediaDetailPagerFragmentUnitTests.kt

@@ -0,0 +1,196 @@
+package fr.free.nrw.commons.media
+
+import android.content.Context
+import android.os.Bundle
+import androidx.fragment.app.FragmentManager
+import androidx.fragment.app.FragmentTransaction
+import com.facebook.drawee.backends.pipeline.Fresco
+import com.facebook.soloader.SoLoader
+import fr.free.nrw.commons.Media
+import fr.free.nrw.commons.TestAppAdapter
+import fr.free.nrw.commons.TestCommonsApplication
+import fr.free.nrw.commons.auth.SessionManager
+import fr.free.nrw.commons.explore.SearchActivity
+import fr.free.nrw.commons.mwapi.OkHttpJsonApiClient
+import org.junit.Assert
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.InjectMocks
+import org.mockito.Mock
+import org.mockito.Mockito.`when`
+import org.mockito.MockitoAnnotations
+import org.robolectric.Robolectric
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.RuntimeEnvironment
+import org.robolectric.annotation.Config
+import org.wikipedia.AppAdapter
+import java.lang.reflect.Field
+import java.lang.reflect.Method
+
+@RunWith(RobolectricTestRunner::class)
+@Config(sdk = [21], application = TestCommonsApplication::class)
+class MediaDetailPagerFragmentUnitTests {
+
+    private lateinit var fragment: MediaDetailPagerFragment
+    private lateinit var context: Context
+    private lateinit var fragmentManager: FragmentManager
+
+    @Mock
+    private lateinit var outState: Bundle
+
+    @Mock
+    private lateinit var media: Media
+
+    @Mock
+    internal var sessionManager: SessionManager? = null
+
+    @InjectMocks
+    private lateinit var okHttpJsonApiClient: OkHttpJsonApiClient
+
+    @Before
+    fun setUp() {
+
+        MockitoAnnotations.initMocks(this)
+
+        context = RuntimeEnvironment.application.applicationContext
+
+        AppAdapter.set(TestAppAdapter())
+
+        SoLoader.setInTestMode()
+
+        Fresco.initialize(context)
+
+        val activity = Robolectric.buildActivity(SearchActivity::class.java).create().get()
+
+        fragment = MediaDetailPagerFragment()
+        fragment = MediaDetailPagerFragment(false, false)
+        fragment = MediaDetailPagerFragment(false, false, 0)
+        fragmentManager = activity.supportFragmentManager
+        val fragmentTransaction: FragmentTransaction = fragmentManager.beginTransaction()
+        fragmentTransaction.add(fragment, null)
+        fragmentTransaction.commit()
+
+        val fieldContext: Field =
+            SessionManager::class.java.getDeclaredField("context")
+        fieldContext.isAccessible = true
+        fieldContext.set(sessionManager, context)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun checkFragmentNotNull() {
+        Assert.assertNotNull(fragment)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testClearRemoved() {
+        fragment.clearRemoved()
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testGetRemovedItems() {
+        fragment.removedItems
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testOnCreateSaveInstanceNotNull() {
+        fragment.onCreate(outState)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testGetMediaDetailProvider() {
+        fragment.mediaDetailProvider
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testSetWallpaperCaseNull() {
+        val method: Method = MediaDetailPagerFragment::class.java.getDeclaredMethod(
+            "setWallpaper",
+            Media::class.java
+        )
+        method.isAccessible = true
+        method.invoke(fragment, media)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testSetWallpaperCaseNonNull() {
+        `when`(media.imageUrl).thenReturn("url")
+        val method: Method = MediaDetailPagerFragment::class.java.getDeclaredMethod(
+            "setWallpaper",
+            Media::class.java
+        )
+        method.isAccessible = true
+        method.invoke(fragment, media)
+    }
+
+
+    @Test
+    @Throws(Exception::class)
+    fun testSetAvatarCaseNull() {
+        val method: Method = MediaDetailPagerFragment::class.java.getDeclaredMethod(
+            "setAvatar",
+            Media::class.java
+        )
+        method.isAccessible = true
+        method.invoke(fragment, media)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testShowImage() {
+        fragment.showImage(0, false)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testShowImageSingle() {
+        fragment.showImage(0)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testNotifyDataSetChangedCaseNull() {
+        fragment.notifyDataSetChanged()
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testOnPageScrolled() {
+        fragment.onPageScrolled(0, 0.0F, 0)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testOnPageScrolledCaseNull() {
+        val fragmentTransaction: FragmentTransaction = fragmentManager.beginTransaction()
+        fragmentTransaction.remove(fragment)
+        fragmentTransaction.commit()
+        fragment.onPageScrolled(0, 0.0F, 0)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testOnPageSelected() {
+        fragment.onPageSelected(0)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testOnPageScrollStateChanged() {
+        fragment.onPageScrollStateChanged(0)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testOnDataSetChanged() {
+        fragment.onDataSetChanged()
+    }
+
+}