Add unit test for changelog parsing

android/app/src/test/kotlin/net/mullvad/mullvadvpn/repository/ChangelogRepositoryTest.kt

@@ -0,0 +1,38 @@
+package net.mullvad.mullvadvpn.repository
+
+import android.content.SharedPreferences
+import io.mockk.every
+import io.mockk.mockk
+import net.mullvad.mullvadvpn.lib.common.test.assertLists
+import net.mullvad.mullvadvpn.util.IChangelogDataProvider
+import org.junit.jupiter.api.Test
+
+class ChangelogRepositoryTest {
+
+    private val mockedPreferences: SharedPreferences = mockk()
+    private val mockDataProvider: IChangelogDataProvider = mockk()
+
+    private val changelogRepository =
+        ChangelogRepository(preferences = mockedPreferences, dataProvider = mockDataProvider)
+
+    @Test
+    fun `when given a changelog text should return a list of correctly formatted strings`() {
+        // Arrange
+        val testChangelog =
+            "- Added very nice new feature with a very long descriptive message\n" +
+                "  about how it works...\n" +
+                "- Fixed super bad leak."
+        val expectedResult =
+            listOf(
+                "Added very nice new feature with a very long descriptive message about how it works...",
+                "Fixed super bad leak."
+            )
+        every { mockDataProvider.getChangelog() } returns testChangelog
+
+        // Act
+        val result = changelogRepository.getLastVersionChanges()
+
+        // Assert
+        assertLists(expectedResult, result)
+    }
+}