Convert CommentSectionErrorIntegrationTest to unit test

- Moved from androidTest to test directory
- Removed Android test runner dependencies
- Renamed to CommentSectionErrorTest
- Addresses PR feedback until Compose testing is in place

Author: SttApollo

app/src/androidTest/java/org/schabi/newpipe/ui/components/video/comment/CommentSectionErrorIntegrationTest.kt

@@ -9,7 +9,6 @@ import org.schabi.newpipe.extractor.Page
 import org.schabi.newpipe.extractor.comments.CommentsInfo
 import org.schabi.newpipe.extractor.comments.CommentsInfoItem
 import org.schabi.newpipe.ui.components.video.comment.CommentInfo
-import java.io.IOException
 
 class CommentsSource(private val commentInfo: CommentInfo) : PagingSource<Page, CommentsInfoItem>() {
     private val service = NewPipe.getService(commentInfo.serviceId)

app/src/main/java/org/schabi/newpipe/paging/CommentsSource.kt

@@ -21,7 +21,6 @@ import org.schabi.newpipe.error.ErrorUtil
 import org.schabi.newpipe.error.ReCaptchaActivity
 import org.schabi.newpipe.extractor.exceptions.AccountTerminatedException
 import org.schabi.newpipe.extractor.exceptions.ReCaptchaException
-import org.schabi.newpipe.extractor.timeago.patterns.it
 import org.schabi.newpipe.ui.theme.AppTheme
 import org.schabi.newpipe.ui.theme.SizeTokens.SpacingExtraLarge
 import org.schabi.newpipe.ui.theme.SizeTokens.SpacingMedium
@@ -48,8 +47,8 @@ fun determineErrorAction(errorInfo: ErrorInfo): ErrorAction {
 @Composable
 fun ErrorPanel(
     errorInfo: ErrorInfo,
+    modifier: Modifier = Modifier,
     onRetry: (() -> Unit)? = null,
-    modifier: Modifier = Modifier
 
 ) {
     val explanation = errorInfo.getExplanation()

app/src/main/java/org/schabi/newpipe/ui/components/common/ErrorPanel.kt

@@ -0,0 +1,61 @@
+package org.schabi.newpipe.ui.components.common
+
+import androidx.paging.LoadState
+import org.junit.Assert
+import org.junit.Test
+import org.schabi.newpipe.error.ErrorInfo
+import org.schabi.newpipe.error.UserAction
+import org.schabi.newpipe.extractor.exceptions.ReCaptchaException
+import java.io.IOException
+import java.net.SocketTimeoutException
+
+class CommentSectionErrorTest {
+
+    // Test 1: Network error on initial load (Resource.Error)
+    @Test
+    fun testInitialCommentNetworkError() {
+        val expectedMessage = "Connection timeout"
+        val networkError = SocketTimeoutException(expectedMessage)
+
+        val errorInfo = ErrorInfo(
+            throwable = networkError,
+            userAction = UserAction.REQUESTED_COMMENTS,
+            request = "comments"
+        )
+        Assert.assertEquals(networkError, errorInfo.throwable)
+        Assert.assertEquals(ErrorAction.REPORT, determineErrorAction(errorInfo))
+        Assert.assertEquals(expectedMessage, errorInfo.getExplanation())
+    }
+
+    // Test 2: Network error on paging (LoadState.Error)
+    @Test
+    fun testPagingNetworkError() {
+        val expectedMessage = "Paging failed"
+        val pagingError = IOException(expectedMessage)
+        val loadStateError = LoadState.Error(pagingError)
+
+        val errorInfo = ErrorInfo(
+            throwable = loadStateError.error,
+            userAction = UserAction.REQUESTED_COMMENTS,
+            request = "comments"
+        )
+        Assert.assertEquals(pagingError, errorInfo.throwable)
+        Assert.assertEquals(ErrorAction.REPORT, determineErrorAction(errorInfo))
+        Assert.assertEquals(expectedMessage, errorInfo.getExplanation())
+    }
+
+    // Test 3: ReCaptcha during comments load
+    @Test
+    fun testReCaptchaDuringComments() {
+        val url = "https://www.google.com/recaptcha/api/fallback?k=test"
+        val expectedMessage = "ReCaptcha needed"
+        val captcha = ReCaptchaException(expectedMessage, url)
+        val errorInfo = ErrorInfo(
+            throwable = captcha,
+            userAction = UserAction.REQUESTED_COMMENTS,
+            request = "comments"
+        )
+        Assert.assertEquals(ErrorAction.SOLVE_CAPTCHA, determineErrorAction(errorInfo))
+        Assert.assertEquals(expectedMessage, errorInfo.getExplanation())
+    }
+}