fix(common): 이미지 캐시 디렉터리를 분리한다

app/src/test/java/kr/co/vividnext/sodalive/common/ImageLoaderProviderTest.kt

@@ -0,0 +1,46 @@
+package kr.co.vividnext.sodalive.common
+
+import android.app.Application
+import androidx.test.core.app.ApplicationProvider
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertNotEquals
+import org.junit.Assert.assertTrue
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.annotation.Config
+import java.io.File
+
+@RunWith(RobolectricTestRunner::class)
+@Config(sdk = [28], application = Application::class)
+class ImageLoaderProviderTest {
+
+    @Test
+    fun `image loader cache directory does not reuse legacy okhttp image cache`() {
+        assertNotEquals(
+            ImageLoaderProvider.LEGACY_OKHTTP_IMAGE_CACHE_DIRECTORY_NAME,
+            ImageLoaderProvider.COIL_IMAGE_CACHE_DIRECTORY_NAME
+        )
+    }
+
+    @Test
+    fun `image loader init deletes legacy cache and creates new cache directory`() {
+        val context = ApplicationProvider.getApplicationContext<android.content.Context>()
+        val legacyCacheDirectory = File(
+            context.cacheDir,
+            ImageLoaderProvider.LEGACY_OKHTTP_IMAGE_CACHE_DIRECTORY_NAME
+        )
+        val newCacheDirectory = File(
+            context.cacheDir,
+            ImageLoaderProvider.COIL_IMAGE_CACHE_DIRECTORY_NAME
+        )
+        legacyCacheDirectory.mkdirs()
+        File(legacyCacheDirectory, "journal").writeText("libcore.io.DiskLruCache\n1\n2\n")
+        newCacheDirectory.deleteRecursively()
+
+        ImageLoaderProvider.init(context)
+
+        assertFalse(legacyCacheDirectory.exists())
+        assertTrue(newCacheDirectory.exists())
+    }
+}