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NewlineAtEndOfFileCheckTest.java
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NewlineAtEndOfFileCheckTest.java
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////////////////////////////////////////////////////////////////////////////////
// checkstyle: Checks Java source code for adherence to a set of rules.
// Copyright (C) 2001-2019 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;
import static com.puppycrawl.tools.checkstyle.checks.NewlineAtEndOfFileCheck.MSG_KEY_NO_NEWLINE_EOF;
import static com.puppycrawl.tools.checkstyle.checks.NewlineAtEndOfFileCheck.MSG_KEY_UNABLE_OPEN;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import org.junit.Test;
import org.powermock.reflect.Whitebox;
import com.puppycrawl.tools.checkstyle.AbstractModuleTestSupport;
import com.puppycrawl.tools.checkstyle.DefaultConfiguration;
import com.puppycrawl.tools.checkstyle.api.CheckstyleException;
import com.puppycrawl.tools.checkstyle.api.FileText;
import com.puppycrawl.tools.checkstyle.api.LocalizedMessage;
import com.puppycrawl.tools.checkstyle.utils.CommonUtil;
public class NewlineAtEndOfFileCheckTest
extends AbstractModuleTestSupport {
@Override
protected String getPackageLocation() {
return "com/puppycrawl/tools/checkstyle/checks/newlineatendoffile";
}
@Test
public void testNewlineLfAtEndOfFile() throws Exception {
final DefaultConfiguration checkConfig =
createModuleConfig(NewlineAtEndOfFileCheck.class);
checkConfig.addAttribute("lineSeparator", LineSeparatorOption.LF.toString());
final String[] expected = CommonUtil.EMPTY_STRING_ARRAY;
verify(
createChecker(checkConfig),
getPath("InputNewlineAtEndOfFileLf.java"),
expected);
}
@Test
public void testNewlineCrlfAtEndOfFile() throws Exception {
final DefaultConfiguration checkConfig =
createModuleConfig(NewlineAtEndOfFileCheck.class);
checkConfig.addAttribute("lineSeparator", LineSeparatorOption.CRLF.toString());
final String[] expected = CommonUtil.EMPTY_STRING_ARRAY;
verify(
createChecker(checkConfig),
getPath("InputNewlineAtEndOfFileCrlf.java"),
expected);
}
@Test
public void testNewlineCrAtEndOfFile() throws Exception {
final DefaultConfiguration checkConfig =
createModuleConfig(NewlineAtEndOfFileCheck.class);
checkConfig.addAttribute("lineSeparator", LineSeparatorOption.CR.toString());
final String[] expected = CommonUtil.EMPTY_STRING_ARRAY;
verify(
createChecker(checkConfig),
getPath("InputNewlineAtEndOfFileCr.java"),
expected);
}
@Test
public void testAnyNewlineAtEndOfFile() throws Exception {
final DefaultConfiguration checkConfig =
createModuleConfig(NewlineAtEndOfFileCheck.class);
checkConfig.addAttribute("lineSeparator", LineSeparatorOption.LF_CR_CRLF.toString());
final String[] expected = CommonUtil.EMPTY_STRING_ARRAY;
verify(
createChecker(checkConfig),
getPath("InputNewlineAtEndOfFileCrlf.java"),
expected);
verify(
createChecker(checkConfig),
getPath("InputNewlineAtEndOfFileLf.java"),
expected);
verify(
createChecker(checkConfig),
getPath("InputNewlineAtEndOfFileCr.java"),
expected);
}
@Test
public void testNoNewlineLfAtEndOfFile() throws Exception {
final DefaultConfiguration checkConfig =
createModuleConfig(NewlineAtEndOfFileCheck.class);
checkConfig.addAttribute("lineSeparator", LineSeparatorOption.LF.toString());
final String[] expected = {
"1: " + getCheckMessage(MSG_KEY_NO_NEWLINE_EOF),
};
verify(
createChecker(checkConfig),
getPath("InputNewlineAtEndOfFileNoNewline.java"),
expected);
}
@Test
public void testNoNewlineAtEndOfFile() throws Exception {
final DefaultConfiguration checkConfig =
createModuleConfig(NewlineAtEndOfFileCheck.class);
checkConfig.addAttribute("lineSeparator", LineSeparatorOption.LF_CR_CRLF.toString());
final String[] expected = {
"1: " + getCheckMessage(MSG_KEY_NO_NEWLINE_EOF),
};
verify(
createChecker(checkConfig),
getPath("InputNewlineAtEndOfFileNoNewline.java"),
expected);
}
@Test
public void testSetLineSeparatorFailure()
throws Exception {
final DefaultConfiguration checkConfig =
createModuleConfig(NewlineAtEndOfFileCheck.class);
checkConfig.addAttribute("lineSeparator", "ct");
try {
createChecker(checkConfig);
fail("exception expected");
}
catch (CheckstyleException ex) {
assertEquals("Error message is unexpected",
"cannot initialize module com.puppycrawl.tools.checkstyle."
+ "checks.NewlineAtEndOfFileCheck - "
+ "Cannot set property 'lineSeparator' to 'ct'",
ex.getMessage());
}
}
@Test
public void testEmptyFileFile() throws Exception {
final DefaultConfiguration checkConfig =
createModuleConfig(NewlineAtEndOfFileCheck.class);
checkConfig.addAttribute("lineSeparator", LineSeparatorOption.LF.toString());
final String[] expected = {
"1: " + getCheckMessage(MSG_KEY_NO_NEWLINE_EOF),
};
verify(
createChecker(checkConfig),
getPath("InputNewlineAtEndOfFileEmptyFile.txt"),
expected);
}
@Test
public void testFileWithEmptyLineOnly() throws Exception {
final DefaultConfiguration checkConfig =
createModuleConfig(NewlineAtEndOfFileCheck.class);
checkConfig.addAttribute("lineSeparator", LineSeparatorOption.LF.toString());
final String[] expected = CommonUtil.EMPTY_STRING_ARRAY;
verify(
createChecker(checkConfig),
getPath("InputNewlineAtEndOfFileNewlineAtEnd.txt"),
expected);
}
@Test
public void testFileWithEmptyLineOnlyWithLFfCrCrlf() throws Exception {
final DefaultConfiguration checkConfig =
createModuleConfig(NewlineAtEndOfFileCheck.class);
checkConfig.addAttribute("lineSeparator", LineSeparatorOption.LF_CR_CRLF.toString());
final String[] expected = CommonUtil.EMPTY_STRING_ARRAY;
verify(
createChecker(checkConfig),
getPath("InputNewlineAtEndOfFileNewlineAtEnd.txt"),
expected);
}
@Test
public void testWrongFile() throws Exception {
final DefaultConfiguration checkConfig = createModuleConfig(NewlineAtEndOfFileCheck.class);
final NewlineAtEndOfFileCheck check = new NewlineAtEndOfFileCheck();
check.configure(checkConfig);
final List<String> lines = new ArrayList<>(1);
lines.add("txt");
final File impossibleFile = new File("");
final FileText fileText = new FileText(impossibleFile, lines);
final Set<LocalizedMessage> messages = check.process(impossibleFile, fileText);
assertEquals("Amount of messages is unexpected",
1, messages.size());
final Iterator<LocalizedMessage> iterator = messages.iterator();
assertEquals("Violation message differs from expected",
getCheckMessage(MSG_KEY_UNABLE_OPEN, ""), iterator.next().getMessage());
}
@Test
public void testWrongSeparatorLength() throws Exception {
final RandomAccessFile file = new RandomAccessFile(
getPath("InputNewlineAtEndOfFileLf.java"), "r") {
@Override
public int read(byte[] bytes) {
return 0;
}
};
try {
Whitebox.invokeMethod(new NewlineAtEndOfFileCheck(), "endsWithNewline", file);
fail("Exception is expected");
}
catch (IOException ex) {
assertEquals("Error message is unexpected",
"Unable to read 1 bytes, got 0", ex.getMessage());
}
}
}