/*
* Copyright 2015 Google Inc.
*
* Licensed 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 com.google.googlejavaformat.java;
import static com.google.common.truth.Truth.assertThat;
import static java.nio.charset.StandardCharsets.UTF_8;
import com.google.common.base.Joiner;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Locale;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Tests for error reporting. */
@RunWith(JUnit4.class)
public class DiagnosticTest {
@Rule public TemporaryFolder testFolder = new TemporaryFolder();
private Locale backupLocale;
@Before
public void setUpLocale() throws Exception {
backupLocale = Locale.getDefault();
Locale.setDefault(Locale.ROOT);
}
@After
public void restoreLocale() throws Exception {
Locale.setDefault(backupLocale);
}
@Test
public void parseError() throws Exception {
String input =
Joiner.on('\n')
.join(
"public class InvalidSyntax {",
" private static NumPrinter {",
" public static void print(int n) {",
" System.out.printf(\"%d%n\", n);",
" }",
" }",
"",
" public static void main(String[] args) {",
" NumPrinter.print(args.length);",
" }",
"}");
StringWriter stdout = new StringWriter();
StringWriter stderr = new StringWriter();
Main main = new Main(new PrintWriter(stdout, true), new PrintWriter(stderr, true), System.in);
Path tmpdir = testFolder.newFolder().toPath();
Path path = tmpdir.resolve("InvalidSyntax.java");
Files.write(path, input.getBytes(UTF_8));
int result = main.format(path.toString());
assertThat(stdout.toString()).isEmpty();
assertThat(stderr.toString()).contains("InvalidSyntax.java:2:29: error: <identifier> expected");
assertThat(result).isEqualTo(1);
}
@Test
public void lexError() throws Exception {
String input = "\\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuu00not-actually-a-unicode-escape-sequence";
StringWriter stdout = new StringWriter();
StringWriter stderr = new StringWriter();
Main main = new Main(new PrintWriter(stdout, true), new PrintWriter(stderr, true), System.in);
Path tmpdir = testFolder.newFolder().toPath();
Path path = tmpdir.resolve("InvalidSyntax.java");
Files.write(path, input.getBytes(UTF_8));
int result = main.format(path.toString());
assertThat(stdout.toString()).isEmpty();
assertThat(stderr.toString())
.contains("InvalidSyntax.java:1:35: error: illegal unicode escape");
assertThat(result).isEqualTo(1);
}
@Test
public void oneFileParseError() throws Exception {
String one = "class One {\n";
String two = "class Two {}\n";
StringWriter stdout = new StringWriter();
StringWriter stderr = new StringWriter();
Main main = new Main(new PrintWriter(stdout, true), new PrintWriter(stderr, true), System.in);
Path tmpdir = testFolder.newFolder().toPath();
Path pathOne = tmpdir.resolve("One.java");
Files.write(pathOne, one.getBytes(UTF_8));
Path pathTwo = tmpdir.resolve("Two.java");
Files.write(pathTwo, two.getBytes(UTF_8));
int result = main.format(pathOne.toString(), pathTwo.toString());
assertThat(stdout.toString()).isEqualTo(two);
assertThat(stderr.toString()).contains("One.java:1:13: error: reached end of file");
assertThat(result).isEqualTo(1);
}
@Test
public void oneFileParseErrorReplace() throws Exception {
String one = "class One {}}\n";
String two = "class Two {\n}\n";
StringWriter stdout = new StringWriter();
StringWriter stderr = new StringWriter();
Main main = new Main(new PrintWriter(stdout, true), new PrintWriter(stderr, true), System.in);
Path tmpdir = testFolder.newFolder().toPath();
Path pathOne = tmpdir.resolve("One.java");
Files.write(pathOne, one.getBytes(UTF_8));
Path pathTwo = tmpdir.resolve("Two.java");
Files.write(pathTwo, two.getBytes(UTF_8));
int result = main.format("-i", pathOne.toString(), pathTwo.toString());
assertThat(stdout.toString()).isEmpty();
assertThat(stderr.toString()).contains("One.java:1:14: error: class, interface");
assertThat(result).isEqualTo(1);
// don't edit files with parse errors
assertThat(Files.readAllLines(pathOne, UTF_8)).containsExactly("class One {}}");
assertThat(Files.readAllLines(pathTwo, UTF_8)).containsExactly("class Two {}");
}
@Test
public void parseError2() throws FormatterException, IOException, UsageException {
String input = "class Foo { void f() {\n g() } }";
Path tmpdir = testFolder.newFolder().toPath();
Path path = tmpdir.resolve("A.java");
Files.write(path, input.getBytes(StandardCharsets.UTF_8));
StringWriter out = new StringWriter();
StringWriter err = new StringWriter();
Main main = new Main(new PrintWriter(out, true), new PrintWriter(err, true), System.in);
String[] args = {path.toString()};
int exitCode = main.format(args);
assertThat(exitCode).isEqualTo(1);
assertThat(err.toString()).contains("A.java:2:6: error: ';' expected");
}
@Test
public void parseErrorStdin() throws FormatterException, IOException, UsageException {
String input = "class Foo { void f() {\n g() } }";
InputStream inStream = new ByteArrayInputStream(input.getBytes(StandardCharsets.UTF_8));
StringWriter out = new StringWriter();
StringWriter err = new StringWriter();
Main main = new Main(new PrintWriter(out, true), new PrintWriter(err, true), inStream);
String[] args = {"-"};
int exitCode = main.format(args);
assertThat(exitCode).isEqualTo(1);
assertThat(err.toString()).contains("<stdin>:2:6: error: ';' expected");
}
@Test
public void lexError2() throws FormatterException, IOException, UsageException {
String input = "class Foo { void f() {\n g('foo'); } }";
Path tmpdir = testFolder.newFolder().toPath();
Path path = tmpdir.resolve("A.java");
Files.write(path, input.getBytes(StandardCharsets.UTF_8));
StringWriter out = new StringWriter();
StringWriter err = new StringWriter();
Main main = new Main(new PrintWriter(out, true), new PrintWriter(err, true), System.in);
String[] args = {path.toString()};
int exitCode = main.format(args);
assertThat(exitCode).isEqualTo(1);
assertThat(err.toString()).contains("A.java:2:5: error: unclosed character literal");
}
@Test
public void lexErrorStdin() throws FormatterException, IOException, UsageException {
String input = "class Foo { void f() {\n g('foo'); } }";
InputStream inStream = new ByteArrayInputStream(input.getBytes(StandardCharsets.UTF_8));
StringWriter out = new StringWriter();
StringWriter err = new StringWriter();
Main main = new Main(new PrintWriter(out, true), new PrintWriter(err, true), inStream);
String[] args = {"-"};
int exitCode = main.format(args);
assertThat(exitCode).isEqualTo(1);
assertThat(err.toString()).contains("<stdin>:2:5: error: unclosed character literal");
}
}
