Add a command-line tool suitable for tech support usage

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=213634869

javatests/google/registry/tools/GtechToolTest.java

@@ -0,0 +1,45 @@
+// Copyright 2017 The Nomulus 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.truth.Truth.assertThat;
+
+import com.google.common.collect.Sets;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+/** Unit tests for {@link GtechTool}. */
+@RunWith(JUnit4.class)
+public class GtechToolTest {
+
+  @Before
+  public void init() {
+    RegistryToolEnvironment.UNITTEST.setup();
+  }
+
+  @Test
+  public void test_commandMap_namesAreInAlphabeticalOrder() {
+    assertThat(GtechTool.COMMAND_MAP.keySet()).isStrictlyOrdered();
+  }
+
+  @Test
+  public void test_commandSet_namesAreSubsetOfRegistryToolCommands() {
+    assertThat(Sets.difference(GtechTool.COMMAND_SET, RegistryTool.COMMAND_MAP.keySet()))
+        .named("commands in GtechTool.COMMAND_SET but not in RegistryTool.COMMAND_MAP")
+        .isEmpty();
+  }
+}