content: /*
   * 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.calcite.test;
  
  import org.apache.calcite.util.Bug;
  import org.apache.calcite.util.Pair;
  import org.apache.calcite.util.Util;
  
  import org.hamcrest.Matcher;
  import org.junit.jupiter.api.Test;
  
  import java.io.ByteArrayOutputStream;
  import java.io.File;
  import java.io.PrintStream;
  import java.io.PrintWriter;
  import java.nio.charset.StandardCharsets;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  import sqlline.SqlLine;
  
  import static org.hamcrest.CoreMatchers.equalTo;
  import static org.hamcrest.CoreMatchers.is;
  import static org.hamcrest.MatcherAssert.assertThat;
  
  /**
   * Tests that we can invoke SqlLine on a Calcite connection.
   */
  class SqlLineTest {
    /**
     * Execute a script with "sqlline -f".
     *
     * @throws java.lang.Throwable On error
     * @return The stderr and stdout from running the script
     * @param args Script arguments
     */
    private static Pair<SqlLine.Status, String> run(String... args)
        throws Throwable {
      SqlLine sqlline = new SqlLine();
      ByteArrayOutputStream os = new ByteArrayOutputStream();
      PrintStream sqllineOutputStream =
          new PrintStream(os, false, StandardCharsets.UTF_8.name());
      sqlline.setOutputStream(sqllineOutputStream);
      sqlline.setErrorStream(sqllineOutputStream);
      SqlLine.Status status = SqlLine.Status.OK;
  
      Bug.upgrade("[sqlline-35] Make Sqlline.begin public");
      // TODO: status = sqlline.begin(args, null, false);
  
      return Pair.of(status, os.toString("UTF8"));
    }
  
    private static Pair<SqlLine.Status, String> runScript(File scriptFile,
        boolean flag) throws Throwable {
      List<String> args = new ArrayList<>();
      Collections.addAll(args, "-u", "jdbc:calcite:", "-n", "sa", "-p", "");
      if (flag) {
        args.add("-f");
        args.add(scriptFile.getAbsolutePath());
      } else {
        args.add("--run=" + scriptFile.getAbsolutePath());
      }
      return run(args.toArray(new String[0]));
    }
  
    /**
     * Attempts to execute a simple script file with the -f option to SqlLine.
     * Tests for presence of an expected pattern in the output (stdout or stderr).
     *
     * @param scriptText Script text
     * @param flag Command flag (--run or -f)
     * @param statusMatcher Checks whether status is as expected
     * @param outputMatcher Checks whether output is as expected
     * @throws Exception on command execution error
     */
    private void checkScriptFile(String scriptText, boolean flag,
        Matcher<SqlLine.Status> statusMatcher,
        Matcher<String> outputMatcher) throws Throwable {
      // Put the script content in a temp file
      File scriptFile = File.createTempFile("foo", "temp");
      scriptFile.deleteOnExit();
      try (PrintWriter w = Util.printWriter(scriptFile)) {
        w.print(scriptText);
      }
  
      Pair<SqlLine.Status, String> pair = runScript(scriptFile, flag);
  
      // Check output before status. It gives a better clue what went wrong.
      assertThat(pair.right, outputMatcher);
      assertThat(pair.left, statusMatcher);
      final boolean delete = scriptFile.delete();
      assertThat(delete, is(true));
    }
  
    @Test void testSqlLine() throws Throwable {
      checkScriptFile("!tables", false, equalTo(SqlLine.Status.OK), equalTo(""));
    }
  }
  