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package com.github.javaparser.utils;
import com.github.javaparser.*;
import com.github.javaparser.ast.expr.Expression;
import com.github.javaparser.ast.validator.Java9Validator;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
import java.io.*;
import java.net.URL;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.*;
import java.util.stream.Collectors;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import static com.github.javaparser.ParserConfiguration.LanguageLevel.*;
import static com.github.javaparser.Providers.provider;
import static com.github.javaparser.utils.CodeGenerationUtils.f;
import static com.github.javaparser.utils.Utils.EOL;
import static com.github.javaparser.utils.Utils.normalizeEolInTextBlock;
import static java.util.Arrays.*;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.fail;
public class TestUtils {
/**
* Takes care of setting all the end of line character to platform specific ones.
*/
public static String readResource(String resourceName) throws IOException {
if (resourceName.startsWith("/")) {
resourceName = resourceName.substring(1);
}
try (final InputStream resourceAsStream = TestUtils.class.getClassLoader().getResourceAsStream(resourceName)) {
if (resourceAsStream == null) {
fail("not found: " + resourceName);
}
try (final InputStreamReader reader = new InputStreamReader(resourceAsStream, "utf-8");
final BufferedReader br = new BufferedReader(reader)) {
final StringBuilder builder = new StringBuilder();
String line;
while ((line = br.readLine()) != null) {
builder.append(line).append(Utils.EOL);
}
return builder.toString();
}
}
}
public static void assertInstanceOf(Class<?> expectedType, Object instance) {
assertEquals(true, expectedType.isAssignableFrom(instance.getClass()), f("%s is not an instance of %s.", instance.getClass(), expectedType));
}
/**
* Unzip a zip file into a directory.
*/
public static void unzip(Path zipFile, Path outputFolder) throws IOException {
Log.info("Unzipping %s to %s", zipFile, outputFolder);
final byte[] buffer = new byte[1024 * 1024];
outputFolder.toFile().mkdirs();
try (ZipInputStream zis = new ZipInputStream(new FileInputStream(zipFile.toFile()))) {
ZipEntry ze = zis.getNextEntry();
while (ze != null) {
final Path newFile = outputFolder.resolve(ze.getName());
if (ze.isDirectory()) {
Log.trace("mkdir %s", newFile.toAbsolutePath());
newFile.toFile().mkdirs();
} else {
Log.info("unzip %s", newFile.toAbsolutePath());
try (FileOutputStream fos = new FileOutputStream(newFile.toFile())) {
int len;
while ((len = zis.read(buffer)) > 0) {
fos.write(buffer, 0, len);
}
}
}
zis.closeEntry();
ze = zis.getNextEntry();
}
}
Log.info("Unzipped %s to %s", zipFile, outputFolder);
}
/**
* Download a file from a URL to disk.
*/
public static void download(URL url, Path destination) throws IOException {
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(url)
.build();
Response response = client.newCall(request).execute();
Files.write(destination, response.body().bytes());
}
public static String temporaryDirectory() {
return System.getProperty("java.io.tmpdir");
}
public static void assertCollections(Collection<?> expected, Collection<?> actual) {
final StringBuilder out = new StringBuilder();
for (Object e : expected) {
if (actual.contains(e)) {
actual.remove(e);
} else {
out.append("Missing: ").append(e).append(EOL);
}
}
for (Object a : actual) {
out.append("Unexpected: ").append(a).append(EOL);
}
String s = out.toString();
if (s.isEmpty()) {
return;
}
fail(s);
}
public static void assertProblems(ParseResult<?> result, String... expectedArg) {
assertProblems(result.getProblems(), expectedArg);
}
public static void assertProblems(List<Problem> result, String... expectedArg) {
Set<String> actual = result.stream().map(Problem::toString).collect(Collectors.toSet());
Set<String> expected = new HashSet<>(asList(expectedArg));
assertCollections(expected, actual);
}
public static void assertNoProblems(ParseResult<?> result) {
assertProblems(result);
}
public static void assertExpressionValid(String expression) {
JavaParser javaParser = new JavaParser(new ParserConfiguration().setLanguageLevel(JAVA_9));
ParseResult<Expression> result = javaParser.parse(ParseStart.EXPRESSION, provider(expression));
assertEquals(true, result.isSuccessful(), result.getProblems().toString());
}
/**
* Assert that "actual" equals "expected", and that any EOL characters in "actual" are correct for the platform.
*/
public static void assertEqualsNoEol(String expected, String actual) {
assertEquals(normalizeEolInTextBlock(expected, EOL), actual);
}
}
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