Issue 4031 - Implement tests for libadblockplus-android

libadblockplus-android-tests/src/org/adblockplus/android/AndroidWebRequest.java

Index: libadblockplus-android-tests/src/org/adblockplus/android/AndroidWebRequest.java
===================================================================
new file mode 100644
--- /dev/null
+++ b/libadblockplus-android-tests/src/org/adblockplus/android/AndroidWebRequest.java
@@ -0,0 +1,143 @@
+/*
+ * This file is part of Adblock Plus <https://adblockplus.org/>,
+ * Copyright (C) 2006-2016 Eyeo GmbH
+ *
+ * Adblock Plus is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 as
+ * published by the Free Software Foundation.
+ *
+ * Adblock Plus is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.adblockplus.android;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.util.HashSet;
+import java.util.List;
+
+import org.adblockplus.libadblockplus.AdblockPlusException;
+import org.adblockplus.libadblockplus.FilterEngine;
+import org.adblockplus.libadblockplus.HeaderEntry;
+import org.adblockplus.libadblockplus.ServerResponse;
+import org.adblockplus.libadblockplus.ServerResponse.NsStatus;
+import org.adblockplus.libadblockplus.WebRequest;
+
+import android.util.Log;
+
+public class AndroidWebRequest extends WebRequest
+{
+  public final static String TAG = Utils.getTag(WebRequest.class);
+
+  private final HashSet<String> subscriptionURLs = new HashSet<String>();
+  private final boolean elemhideEnabled;
+
+  public AndroidWebRequest(boolean enableElemhide)
+  {
+    this.elemhideEnabled = enableElemhide;
+  }
+
+  public AndroidWebRequest()
+  {
+    this(false);
+  }
+
+  private boolean isListedSubscriptionUrl(final URL url)
+  {
+    String toCheck = url.toString();
+
+    final int idx = toCheck.indexOf('?');
+    if (idx != -1)
+    {
+      toCheck = toCheck.substring(0, idx);
+    }
+
+    return this.subscriptionURLs.contains(toCheck);
+  }
+
+  protected void updateSubscriptionURLs(final FilterEngine engine)
+  {
+    for (final org.adblockplus.libadblockplus.Subscription s : engine.fetchAvailableSubscriptions())
+    {
+      this.subscriptionURLs.add(s.getProperty("url").toString());
+    }
+    this.subscriptionURLs.add(engine.getPref("subscriptions_exceptionsurl").toString());
+  }
+
+  @Override
+  public ServerResponse httpGET(final String urlStr, final List<HeaderEntry> headers)
+  {
+    try
+    {
+      final URL url = new URL(urlStr);
+      Log.d(TAG, "Downloading from: " + url);
+
+      final HttpURLConnection connection = (HttpURLConnection) url.openConnection();
+      connection.setRequestMethod("GET");
+      connection.connect();
+
+      final ServerResponse response = new ServerResponse();
+      response.setResponseStatus(connection.getResponseCode());
+
+      if (response.getResponseStatus() == 200)
+      {
+        final BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));
+        final StringBuilder sb = new StringBuilder();
+
+        if (!this.elemhideEnabled && isListedSubscriptionUrl(url))
+        {
+          Log.d(TAG, "Removing element hiding rules from: '" + url + "'");
+
+          String line;
+          while ((line = reader.readLine()) != null)
+          {
+            // We're only appending non-element-hiding filters here.
+            //
+            // See:
+            //      https://issues.adblockplus.org/ticket/303
+            //
+            // Follow-up issue for removing this hack:
+            //      https://issues.adblockplus.org/ticket/1541
+            //
+            if (line.indexOf('#') == -1)
+            {
+              sb.append(line);
+              sb.append('\n');
+            }
+          }
+        }
+        else
+        {
+          int character;
+
+          while ((character = reader.read()) != -1)
+          {
+            sb.append((char) character);
+          }
+        }
+
+        connection.disconnect();
+
+        response.setStatus(NsStatus.OK);
+        response.setResponse(sb.toString());
+      }
+      else
+      {
+        response.setStatus(NsStatus.ERROR_FAILURE);
+      }
+      return response;
+    }
+    catch (final Throwable t)
+    {
+      throw new AdblockPlusException("WebRequest failed", t);
+    }
+  }
+}