[SoundCloud] Add test for hardcoded client id

Author: mauriciocolli

extractor/src/main/java/org/schabi/newpipe/extractor/services/soundcloud/SoundcloudParsingHelper.java

@@ -31,6 +31,7 @@
 import static org.schabi.newpipe.extractor.utils.Utils.replaceHttpWithHttps;
 
 public class SoundcloudParsingHelper {
+    private static final String HARDCODED_CLIENT_ID = "LHzSAKe8eP9Yy3FgBugfBapRPLncO6Ng"; // Updated on 22/10/19
     private static String clientId;
 
     private SoundcloudParsingHelper() {
@@ -40,11 +41,8 @@ public static String clientId() throws ExtractionException, IOException {
         if (clientId != null && !clientId.isEmpty()) return clientId;
 
         Downloader dl = NewPipe.getDownloader();
-        clientId = "LHzSAKe8eP9Yy3FgBugfBapRPLncO6Ng"; // Updated on 22/10/19
-        final String apiUrl = "https://api.soundcloud.com/connect?client_id=" + clientId;
-        // Should return 200 to indicate that the client id is valid, a 401 is returned otherwise.
-        // In that case, the fallback method is used.
-        if (dl.head(apiUrl).getResponseCode() == 200) {
+        clientId = HARDCODED_CLIENT_ID;
+        if (checkIfHardcodedClientIdIsValid(dl)) {
             return clientId;
         }
 
@@ -75,6 +73,12 @@ public static String clientId() throws ExtractionException, IOException {
         throw new ExtractionException("Couldn't extract client id");
     }
 
+    static boolean checkIfHardcodedClientIdIsValid(Downloader dl) throws IOException, ReCaptchaException {
+        final String apiUrl = "https://api.soundcloud.com/connect?client_id=" + HARDCODED_CLIENT_ID;
+        // Should return 200 to indicate that the client id is valid, a 401 is returned otherwise.
+        return dl.head(apiUrl).getResponseCode() == 200;
+    }
+
     public static String toDateString(String time) throws ParsingException {
         try {
             Date date;

extractor/src/test/java/org/schabi/newpipe/extractor/services/soundcloud/SoundcloudParsingHelperTest.java

@@ -1,18 +1,24 @@
 package org.schabi.newpipe.extractor.services.soundcloud;
 
-import org.junit.Assert;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.*;
 import org.schabi.newpipe.Downloader;
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.utils.Localization;
 
+import static org.junit.Assert.*;
+
 public class SoundcloudParsingHelperTest {
     @BeforeClass
     public static void setUp() {
         NewPipe.init(Downloader.getInstance(), new Localization("GB", "en"));
     }
 
+    @Test
+    public void assertThatHardcodedClientIdIsValid() throws Exception {
+        assertTrue("Hardcoded client id is not valid anymore",
+                SoundcloudParsingHelper.checkIfHardcodedClientIdIsValid(Downloader.getInstance()));
+    }
+
     @Test
     public void resolveUrlWithEmbedPlayerTest() throws Exception {
         Assert.assertEquals("https://soundcloud.com/trapcity", SoundcloudParsingHelper.resolveUrlWithEmbedPlayer("https://api.soundcloud.com/users/26057743"));