Added Test for LevelInfo Class (commons-app#3930)

Author: madhurgupta10

app/src/test/kotlin/fr/free/nrw/commons/profile/achievements/LevelControllerTest.kt

@@ -0,0 +1,82 @@
+package fr.free.nrw.commons.profile.achievements
+
+import fr.free.nrw.commons.R
+import org.junit.Assert.assertEquals
+import org.junit.Before
+import org.junit.Test
+import org.mockito.Mock
+import org.mockito.MockitoAnnotations
+
+/**
+ * Test for the Level Controller Class for Achievements
+ */
+class LevelControllerTest {
+
+    @Mock
+    private lateinit var levelController: LevelController
+
+    private val IMAGES_UPLOADED_SAMPLE_VALUE = 0
+
+    private val UNIQUE_IMAGES_USED_SAMPLE_VALUE = 0
+
+    private val NON_REVERT_RATE_SAMPLE_VALUE = 0
+
+    private lateinit var levelInfo: LevelController.LevelInfo
+
+    /**
+     * Setups the mock objects for the tests
+     */
+    @Before
+    fun setUp() {
+        MockitoAnnotations.initMocks(this)
+        levelController = LevelController()
+        levelInfo = LevelController.LevelInfo.from(
+            IMAGES_UPLOADED_SAMPLE_VALUE,
+            UNIQUE_IMAGES_USED_SAMPLE_VALUE,
+            NON_REVERT_RATE_SAMPLE_VALUE
+        )
+    }
+
+    /**
+     * Tests if Level number for sample values is equal to actual value or not
+     */
+    @Test
+    fun testLevelNumber() {
+        assertEquals(levelInfo.levelNumber, 1)
+    }
+
+    /**
+     * Tests if Level Style for Level with sample values is equal to actual value or not
+     */
+    @Test
+    fun testLevelStyle() {
+        assertEquals(levelInfo.levelStyle, R.style.LevelOne)
+    }
+
+    /**
+     * Tests if Maximum Unique Images for Level with sample values is equal to actual value
+     * or not
+     */
+    @Test
+    fun testMaxUniqueImages() {
+        assertEquals(levelInfo.maxUniqueImages, 5)
+    }
+
+    /**
+     * Tests if Maximum Upload Count for Level with sample values is equal to actual value
+     * or not
+     */
+    @Test
+    fun testMaxUploadCount() {
+        assertEquals(levelInfo.maxUploadCount, 20)
+    }
+
+    /**
+     * Tests if the Minimum Non Revert Percentage for Level with sample values is equal to
+     * actual value or not
+     */
+    @Test
+    fun testMinNonRevertPercentage() {
+        assertEquals(levelInfo.minNonRevertPercentage, 85)
+    }
+}