Add Grid View Adapter Unit Tests (#4301)

app/src/test/kotlin/fr/free/nrw/commons/category/GridViewAdapterUnitTest.kt

@@ -0,0 +1,126 @@
+package fr.free.nrw.commons.category
+
+import android.content.Context
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.TextView
+import com.facebook.drawee.backends.pipeline.Fresco
+import com.facebook.soloader.SoLoader
+import fr.free.nrw.commons.Media
+import fr.free.nrw.commons.R
+import fr.free.nrw.commons.TestCommonsApplication
+import org.junit.Assert
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+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 java.lang.reflect.Method
+
+@RunWith(RobolectricTestRunner::class)
+@Config(sdk = [21], application = TestCommonsApplication::class)
+class GridViewAdapterUnitTest {
+
+    private lateinit var gridViewAdapter: GridViewAdapter
+    private lateinit var activity: CategoryDetailsActivity
+    private lateinit var context: Context
+    private lateinit var convertView: View
+
+    @Mock
+    private lateinit var media1: Media
+
+    @Mock
+    private lateinit var parent: ViewGroup
+
+    @Mock
+    private lateinit var images: List<Media>
+
+    @Mock
+    private lateinit var textView: TextView
+
+    @Before
+    @Throws(Exception::class)
+    fun setUp() {
+
+        MockitoAnnotations.initMocks(this)
+
+
+        context = RuntimeEnvironment.application.applicationContext
+
+        SoLoader.setInTestMode()
+
+        Fresco.initialize(context)
+
+        activity = Robolectric.buildActivity(CategoryDetailsActivity::class.java).get()
+
+        convertView = LayoutInflater.from(activity)
+            .inflate(R.layout.layout_category_images, null) as View
+
+        gridViewAdapter = GridViewAdapter(context, 0, images)
+    }
+
+    @Test
+    fun testAddItems() {
+        gridViewAdapter.addItems(images)
+    }
+
+    @Test
+    fun testContainsAllImageNull() {
+        Assert.assertEquals(gridViewAdapter.containsAll(null), false)
+    }
+
+    @Test
+    fun testContainsAllDataNull() {
+        gridViewAdapter = GridViewAdapter(context, 0, null)
+        Assert.assertEquals(gridViewAdapter.containsAll(images), false)
+    }
+
+    @Test
+    fun testContainsAllDataEmpty() {
+        gridViewAdapter = GridViewAdapter(context, 0, listOf())
+        Assert.assertEquals(gridViewAdapter.containsAll(images), false)
+    }
+
+    @Test
+    fun testContainsAll() {
+        gridViewAdapter = GridViewAdapter(context, 0, listOf(media1))
+        `when`(media1.filename).thenReturn("")
+        Assert.assertEquals(gridViewAdapter.containsAll(listOf(media1)), true)
+    }
+
+    @Test
+    fun testGetItem() {
+        gridViewAdapter = GridViewAdapter(context, 0, listOf(media1))
+        Assert.assertEquals(gridViewAdapter.getItem(0), media1)
+    }
+
+    @Test
+    fun testIsEmpty() {
+        gridViewAdapter = GridViewAdapter(context, 0, null)
+        Assert.assertEquals(gridViewAdapter.isEmpty, true)
+    }
+
+    @Test
+    fun testGetView() {
+        gridViewAdapter = GridViewAdapter(context, 0, listOf(media1))
+        `when`(media1.mostRelevantCaption).thenReturn("")
+        Assert.assertEquals(gridViewAdapter.getView(0, convertView, parent), convertView)
+    }
+
+    @Test
+    fun testSetUploaderView() {
+        `when`(media1.author).thenReturn("author")
+        val method: Method = GridViewAdapter::class.java.getDeclaredMethod(
+            "setUploaderView", Media::class.java, TextView::class.java
+        )
+        method.isAccessible = true
+        method.invoke(gridViewAdapter, media1, textView)
+    }
+
+}