/*
 * 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.apache.zeppelin.java;

import org.apache.zeppelin.interpreter.InterpreterContext;
import org.apache.zeppelin.interpreter.InterpreterResult;
import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;

import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;


public class JavaInterpreterUtilsTest {

  private static final String TABLE_RESULT_1 = "%table\n" +
                                               "Word\tCount\n" +
                                               "world\t5\n" +
                                               "hello\t4";

  private static JavaInterpreter java;
  private static InterpreterContext context;

  @BeforeAll
  public static void setUp() {
    Properties p = new Properties();
    java = new JavaInterpreter(p);
    java.open();
    context = InterpreterContext.builder().build();
  }

  @AfterAll
  public static void tearDown() {
    java.close();
  }

  @Test
  void testDisplayTableFromSimpleMapUtil() {

    Map<String, Long> counts = new HashMap<>();
    counts.put("hello", 4L);
    counts.put("world", 5L);

    assertEquals(
            TABLE_RESULT_1,
            JavaInterpreterUtils.displayTableFromSimpleMap("Word", "Count", counts)
    );

  }

  @Test
  void testStaticReplWithDisplayTableFromSimpleMapUtilReturnTableType() {

    StringWriter writer = new StringWriter();
    PrintWriter out = new PrintWriter(writer);
    out.println("import java.util.HashMap;");
    out.println("import java.util.Map;");
    out.println("import org.apache.zeppelin.java.JavaInterpreterUtils;");
    out.println("public class HelloWorld {");
    out.println("  public static void main(String args[]) {");
    out.println("    Map<String, Long> counts = new HashMap<>();");
    out.println("    counts.put(\"hello\",4L);");
    out.println("    counts.put(\"world\",5L);");
    out.println("    System.out.println("
                + "JavaInterpreterUtils.displayTableFromSimpleMap(\"Word\", \"Count\", counts)"
                + ");");
    out.println("  }");
    out.println("}");
    out.close();

    InterpreterResult res = java.interpret(writer.toString(), context);

    assertEquals(InterpreterResult.Code.SUCCESS, res.code());
    assertEquals(InterpreterResult.Type.TABLE, res.message().get(0).getType());
  }

}
