/*
    * 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.commons.net.imap;
  
  import static org.junit.jupiter.api.Assertions.assertAll;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.util.stream.Stream;
  
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.params.ParameterizedTest;
  import org.junit.jupiter.params.provider.MethodSource;
  
  public class IMAPTest {
  
      private static Stream<String> mailboxNamesToBeQuoted() {
          return Stream.of(
                  "",
                  " ",
                  "\"",
                  "\"\"",
                  "\\/  ",
                  "Hello\", ",
                  "\" World!",
                  "Hello\",\" World!"
          );
      }
  
      @Test
      public void checkGenerator() {
          // This test assumes:
          // - 26 letters in the generator alphabet
          // - the generator uses a fixed size tag
          final IMAP imap = new IMAP();
          final String initial = imap.generateCommandID();
          int expected = 1;
          for (int j = 0; j < initial.length(); j++) {
              expected *= 26; // letters in alphabet
          }
          int i = 0;
          boolean matched = false;
          while (i <= expected + 10) { // don't loop forever, but allow it to pass go!
              i++;
              final String s = imap.generateCommandID();
              matched = initial.equals(s);
              if (matched) { // we've wrapped around completely
                  break;
              }
          }
          assertEquals(expected, i);
          assertTrue(matched, "Expected to see the original value again");
      }
  
      @Test
      public void constructDefaultIMAP() {
          final IMAP imap = new IMAP();
          assertAll(
                  () -> assertEquals(IMAP.DEFAULT_PORT, imap.getDefaultPort()),
                  () -> assertEquals(IMAP.IMAPState.DISCONNECTED_STATE, imap.getState()),
                  () -> assertEquals(0, imap.getReplyStrings().length)
          );
      }
  
      @ParameterizedTest(name = "String `{0}` should be quoted")
      @MethodSource("mailboxNamesToBeQuoted")
      public void quoteMailboxName(final String input) {
          final String quotedMailboxName = IMAP.quoteMailboxName(input);
          assertAll(
                  () -> assertTrue(quotedMailboxName.startsWith("\""), "quoted string should start with quotation mark"),
                  () -> assertTrue(quotedMailboxName.endsWith("\""), "quoted string should end with quotation mark")
          );
      }
  
      @Test
      public void quoteMailboxNameNullInput() {
          assertNull(IMAP.quoteMailboxName(null));
      }
  
      @Test
      public void quoteMailboxNoQuotingIfNoSpacePresent() {
          final String stringToQuote = "Foobar\"";
          assertEquals(stringToQuote, IMAP.quoteMailboxName(stringToQuote));
     }
 
     @Test
     public void trueChunkListener() {
         assertTrue(IMAP.TRUE_CHUNK_LISTENER.chunkReceived(new IMAP()));
     }
 
 }