////////////////////////////////////////////////////////////////////////////////
// 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.metrics;

import static com.puppycrawl.tools.checkstyle.checks.metrics.BooleanExpressionComplexityCheck.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 antlr.CommonHiddenStreamToken;
import com.puppycrawl.tools.checkstyle.BaseCheckTestSupport;
import com.puppycrawl.tools.checkstyle.DefaultConfiguration;
import com.puppycrawl.tools.checkstyle.api.DetailAST;
import com.puppycrawl.tools.checkstyle.api.TokenTypes;
import com.puppycrawl.tools.checkstyle.utils.CommonUtils;

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

    @Test
    public void test() throws Exception {
        final DefaultConfiguration checkConfig =
            createCheckConfig(BooleanExpressionComplexityCheck.class);

        final String[] expected = {
            "13:9: " + getCheckMessage(MSG_KEY, 4, 3),
            "32:9: " + getCheckMessage(MSG_KEY, 6, 3),
            "38:34: " + getCheckMessage(MSG_KEY, 4, 3),
            "40:34: " + getCheckMessage(MSG_KEY, 4, 3),
        };

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

    @Test
    public void testNoBitwise() throws Exception {
        final DefaultConfiguration checkConfig =
            createCheckConfig(BooleanExpressionComplexityCheck.class);
        checkConfig.addAttribute("max", "5");
        checkConfig.addAttribute("tokens", "BXOR,LAND,LOR");

        final String[] expected = CommonUtils.EMPTY_STRING_ARRAY;

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

    @Test
    public void testNullPointerException() throws Exception {
        final DefaultConfiguration checkConfig =
            createCheckConfig(BooleanExpressionComplexityCheck.class);

        final String[] expected = CommonUtils.EMPTY_STRING_ARRAY;

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

    @Test
    public void testWrongToken() {
        final BooleanExpressionComplexityCheck booleanExpressionComplexityCheckObj =
            new BooleanExpressionComplexityCheck();
        final DetailAST ast = new DetailAST();
        ast.initialize(new CommonHiddenStreamToken(TokenTypes.INTERFACE_DEF, "interface"));
        try {
            booleanExpressionComplexityCheckObj.visitToken(ast);
            fail("exception expected");
        }
        catch (IllegalArgumentException ex) {
            assertEquals("Unknown type: interface[0x-1]", ex.getMessage());
        }
    }
}