////////////////////////////////////////////////////////////////////////////////
// checkstyle: Checks Java source code for adherence to a set of rules.
// Copyright (C) 2001-2017 the original author or authors.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
////////////////////////////////////////////////////////////////////////////////

package com.puppycrawl.tools.checkstyle.checks.sizes;

import static com.puppycrawl.tools.checkstyle.checks.sizes.FileLengthCheck.MSG_KEY;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;

import java.io.File;
import java.io.IOException;

import org.junit.Test;

import com.puppycrawl.tools.checkstyle.BaseCheckTestSupport;
import com.puppycrawl.tools.checkstyle.DefaultConfiguration;
import com.puppycrawl.tools.checkstyle.api.CheckstyleException;
import com.puppycrawl.tools.checkstyle.api.Configuration;
import com.puppycrawl.tools.checkstyle.utils.CommonUtils;

public class FileLengthCheckTest
    extends BaseCheckTestSupport {
    @Override
    protected String getPath(String filename) throws IOException {
        return super.getPath("checks" + File.separator
                + "sizes" + File.separator
                + "filelength" + File.separator
                + filename);
    }

    @Override
    protected DefaultConfiguration createCheckerConfig(
        Configuration config) {
        final DefaultConfiguration dc = new DefaultConfiguration("root");
        dc.addChild(config);
        return dc;
    }

    @Test
    public void testAlarm() throws Exception {
        final DefaultConfiguration checkConfig =
            createCheckConfig(FileLengthCheck.class);
        checkConfig.addAttribute("max", "20");
        final String[] expected = {
            "1: " + getCheckMessage(MSG_KEY, 225, 20),
        };
        verify(createChecker(checkConfig),
                getPath("InputFileLength.java"),
                getPath("InputFileLength.java"), expected);
    }

    @Test
    public void testOk() throws Exception {
        final DefaultConfiguration checkConfig =
            createCheckConfig(FileLengthCheck.class);
        checkConfig.addAttribute("max", "2000");
        final String[] expected = CommonUtils.EMPTY_STRING_ARRAY;
        verify(createChecker(checkConfig),
                getPath("InputFileLength.java"),
                getPath("InputFileLength.java"), expected);
    }

    @Test
    public void testArgs() throws Exception {
        final DefaultConfiguration checkConfig =
            createCheckConfig(FileLengthCheck.class);
        try {
            checkConfig.addAttribute("max", "abc");
            createChecker(checkConfig);
            fail("Should indicate illegal args");
        }
        catch (CheckstyleException ex) {
            // Expected Exception because of illegal argument for "max"
            assertEquals("cannot initialize module"
                + " com.puppycrawl.tools.checkstyle.checks.sizes.FileLengthCheck"
                + " - illegal value 'abc' for property 'max' of module"
                + " com.puppycrawl.tools.checkstyle.checks.sizes.FileLengthCheck",
                ex.getMessage());
        }
    }

    @Test
    public void testNoAlarmByExtension() throws Exception {
        final DefaultConfiguration checkConfig =
                createCheckConfig(FileLengthCheck.class);
        checkConfig.addAttribute("fileExtensions", "txt");
        final String[] expected = CommonUtils.EMPTY_STRING_ARRAY;

        verify(createChecker(checkConfig),
                getPath("InputFileLength.java"),
                getPath("InputFileLength.java"), expected);
    }

    @Test
    public void testExtensions() {
        final FileLengthCheck check = new FileLengthCheck();
        check.setFileExtensions("java");
        assertEquals("extension should be the same", ".java", check.getFileExtensions()[0]);
        check.setFileExtensions(".java");
        assertEquals("extension should be the same", ".java", check.getFileExtensions()[0]);
        try {
            check.setFileExtensions((String[]) null);
            fail("IllegalArgumentException is expected");
        }
        catch (IllegalArgumentException ex) {
            assertEquals("Extensions array can not be null", ex.getMessage());
        }
    }
}