Restore `Unknown` type as empty `String`

core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/data/NewsResourcesTestData.kt

@@ -65,7 +65,7 @@ val newsResourcesTestData: List<NewsResource> = listOf(
         url = "https://developer.android.com/jetpack/androidx/versions/all-channel",
         headerImageUrl = "",
         publishDate = Instant.parse("2022-10-01T00:00:00.000Z"),
-        type = "Unknown",
+        type = "",
         topics = listOf(topicsTestData[2]),
     ),
 )

core/testing/src/main/java/com/google/samples/apps/nowinandroid/core/testing/data/UserNewsResourcesTestData.kt

@@ -99,7 +99,7 @@ val userNewsResourcesTestData: List<UserNewsResource> = UserData(
                 url = "https://developer.android.com/jetpack/androidx/versions/all-channel",
                 headerImageUrl = "",
                 publishDate = Instant.parse("2022-10-01T00:00:00.000Z"),
-                type = "Unknown",
+                type = "",
                 topics = listOf(topicsTestData[2]),
             ),
             userData = userData,

core/ui/src/androidTest/java/com/google/samples/apps/nowinandroid/core/ui/NewsResourceCardTest.kt

@@ -61,13 +61,13 @@ class NewsResourceCardTest {
     }
 
     @Test
-    fun testMetaDataDisplay_withUnknownResource() {
-        val newsWithUnknownResourceType = userNewsResourcesTestData[3]
+    fun testMetaDataDisplay_withEmptyResourceType() {
+        val newsWithEmptyResourceType = userNewsResourcesTestData[3]
         var dateFormatted = ""
 
         composeTestRule.setContent {
             NewsResourceCardExpanded(
-                userNewsResource = newsWithUnknownResourceType,
+                userNewsResource = newsWithEmptyResourceType,
                 isBookmarked = false,
                 hasBeenViewed = false,
                 onToggleBookmark = {},
@@ -75,11 +75,11 @@ class NewsResourceCardTest {
                 onTopicClick = {},
             )
 
-            dateFormatted = dateFormatted(publishDate = newsWithUnknownResourceType.publishDate)
+            dateFormatted = dateFormatted(publishDate = newsWithEmptyResourceType.publishDate)
         }
 
         composeTestRule
-            .onNodeWithText(dateFormatted, substring = true)
+            .onNodeWithText(dateFormatted)
             .assertIsDisplayed()
     }