/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.jclouds.ohai.functions;

import static org.testng.Assert.assertEquals;

import java.io.IOException;

import org.jclouds.chef.ChefApiMetadata;
import org.jclouds.chef.config.ChefParserModule;
import org.jclouds.domain.JsonBall;
import org.jclouds.json.Json;
import org.jclouds.json.config.GsonModule;
import org.jclouds.rest.annotations.ApiVersion;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;

import com.google.common.base.Supplier;
import com.google.common.base.Suppliers;
import com.google.common.collect.ImmutableListMultimap;
import com.google.inject.AbstractModule;
import com.google.inject.Guice;
import com.google.inject.Injector;

/**
 * Tests behavior of {@code NestSlashKeys}
 */
@Test(groups = "unit", testName = "NestSlashKeysTest")
public class NestSlashKeysTest {

   private NestSlashKeys converter;
   private Json json;

   @BeforeTest
   protected void setUpInjector() throws IOException {
      Injector injector = Guice.createInjector(new AbstractModule() {
         @Override
         protected void configure() {
            bind(String.class).annotatedWith(ApiVersion.class).toInstance(ChefApiMetadata.DEFAULT_API_VERSION);
         }
      }, new ChefParserModule(), new GsonModule());
      converter = injector.getInstance(NestSlashKeys.class);
      json = injector.getInstance(Json.class);
   }

   @Test
   public void testBase() {
      assertEquals(
            json.toJson(converter.apply(ImmutableListMultimap.<String, Supplier<JsonBall>> of("java",
                  Suppliers.ofInstance(new JsonBall("java"))))), "{\"java\":\"java\"}");
   }

   @Test(expectedExceptions = IllegalArgumentException.class)
   public void testIllegal() {
      json.toJson(converter.apply(ImmutableListMultimap.<String, Supplier<JsonBall>> of("java",
            Suppliers.ofInstance(new JsonBall("java")), "java/system", Suppliers.ofInstance(new JsonBall("system")))));
   }

   @Test
   public void testOne() {
      assertEquals(
            json.toJson(converter.apply(ImmutableListMultimap.<String, Supplier<JsonBall>> of("java",
                  Suppliers.ofInstance(new JsonBall("{\"time\":\"time\"}")), "java/system",
                  Suppliers.ofInstance(new JsonBall("system"))))),
            "{\"java\":{\"time\":\"time\",\"system\":\"system\"}}");
   }

   @Test
   public void testOneDuplicate() {
      assertEquals(
            json.toJson(converter.apply(ImmutableListMultimap.<String, Supplier<JsonBall>> of("java",
                  Suppliers.ofInstance(new JsonBall("{\"time\":\"time\"}")), "java",
                  Suppliers.ofInstance(new JsonBall("{\"system\":\"system\"}"))))),
            "{\"java\":{\"time\":\"time\",\"system\":\"system\"}}");
   }

   @Test
   public void testMerge() {
      assertEquals(
            json.toJson(converter.apply(ImmutableListMultimap.<String, Supplier<JsonBall>> of("java",
                  Suppliers.ofInstance(new JsonBall("{\"time\":{\"1\":\"hello\"}}")), "java/time",
                  Suppliers.ofInstance(new JsonBall("{\"2\":\"goodbye\"}"))))),
            "{\"java\":{\"time\":{\"1\":\"hello\",\"2\":\"goodbye\"}}}");
   }

   @Test
   public void testMergeNestedTwice() {
      assertEquals(
            json.toJson(converter.apply(ImmutableListMultimap.<String, Supplier<JsonBall>> of("java",
                  Suppliers.ofInstance(new JsonBall("{\"time\":{\"1\":\"hello\"}}")), "java",
                  Suppliers.ofInstance(new JsonBall("{\"time\":{\"2\":\"goodbye\"}}"))))),
            "{\"java\":{\"time\":{\"1\":\"hello\",\"2\":\"goodbye\"}}}");
   }

   @Test
   public void testReplaceList() {
      assertEquals(
            json.toJson(converter.apply(ImmutableListMultimap.<String, Supplier<JsonBall>> of("java",
                  Suppliers.ofInstance(new JsonBall("{\"time\":{\"1\":[\"hello\"]}}")), "java/time",
                  Suppliers.ofInstance(new JsonBall("{\"1\":[\"goodbye\"]}"))))),
            "{\"java\":{\"time\":{\"1\":[\"goodbye\"]}}}");
   }
}