Change the LoadTestAction to use /_dr/epptool

The load tests used to directly build EPP, but that becomes
problematic for an upcoming CL that refactors a lot of the
EPP flow code. Instead, use the existing tool endpoint
(conveniently, LoadTestAction is already in the tools module).
This required changing the EppToolServlet to get its
xml from a param rather than from the request payload,
since task queues won't allow both a payload and request
params on the same task.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=124351878

javatests/google/registry/tools/EppToolVerifier.java

@@ -0,0 +1,97 @@
+// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package google.registry.tools;
+
+import static com.google.common.collect.Iterables.pairUp;
+import static com.google.common.truth.Truth.assertThat;
+import static google.registry.util.ResourceUtils.readResourceUtf8;
+import static google.registry.xml.XmlTestUtils.assertXmlEquals;
+import static java.nio.charset.StandardCharsets.UTF_8;
+import static java.util.Arrays.asList;
+import static org.mockito.Matchers.eq;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+
+import com.google.common.base.Pair;
+import com.google.common.base.Splitter;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.net.MediaType;
+
+import google.registry.tools.ServerSideCommand.Connection;
+
+import org.mockito.ArgumentCaptor;
+
+import java.net.URLDecoder;
+import java.util.List;
+import java.util.Map;
+
+/** Class for verifying EPP commands sent to the server via the tool endpoint. */
+public class EppToolVerifier {
+
+  private final Connection connection;
+  private final String clientIdentifier;
+  private final boolean superuser;
+  private final boolean dryRun;
+
+  public EppToolVerifier() {
+    this(null, null, false, false);
+  }
+
+  private EppToolVerifier(
+      Connection connection, String clientIdentifier, boolean superuser, boolean dryRun) {
+    this.connection = connection;
+    this.clientIdentifier = clientIdentifier;
+    this.superuser = superuser;
+    this.dryRun = dryRun;
+  }
+
+  EppToolVerifier withConnection(Connection connection) {
+    return new EppToolVerifier(connection, clientIdentifier, superuser, dryRun);
+  }
+
+  EppToolVerifier withClientIdentifier(String clientIdentifier) {
+    return new EppToolVerifier(connection, clientIdentifier, superuser, dryRun);
+  }
+
+  EppToolVerifier asSuperuser() {
+    return new EppToolVerifier(connection, clientIdentifier, true, dryRun);
+  }
+
+  EppToolVerifier asDryRun() {
+    return new EppToolVerifier(connection, clientIdentifier, superuser, true);
+  }
+
+  void verifySent(String... xmlToMatch) throws Exception {
+    ArgumentCaptor<byte[]> params = ArgumentCaptor.forClass(byte[].class);
+    verify(connection, times(xmlToMatch.length)).send(
+        eq("/_dr/epptool"),
+        eq(ImmutableMap.<String, Object>of()),
+        eq(MediaType.FORM_DATA),
+        params.capture());
+    List<byte[]> capturedParams = params.getAllValues();
+    assertThat(capturedParams).hasSize(xmlToMatch.length);
+    for (Pair<String, byte[]> xmlAndParams : pairUp(asList(xmlToMatch), capturedParams)) {
+      Map<String, String> map = Splitter.on('&').withKeyValueSeparator('=')
+          .split(new String(xmlAndParams.getSecond(), UTF_8));
+      assertThat(map).hasSize(4);
+      assertXmlEquals(
+          readResourceUtf8(getClass(), "testdata/" + xmlAndParams.getFirst()),
+          URLDecoder.decode(map.get("xml"), UTF_8.toString()));
+      assertThat(map).containsEntry("dryRun", Boolean.toString(dryRun));
+      assertThat(map).containsEntry("clientIdentifier", clientIdentifier);
+      assertThat(map).containsEntry("superuser", Boolean.toString(superuser));
+    }
+  }
+}