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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.node.admin.task.util.file;
import com.yahoo.vespa.test.file.TestFileSystem;
import org.junit.jupiter.api.Test;
import java.nio.charset.StandardCharsets;
import java.nio.file.FileSystem;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.List;
import static org.junit.jupiter.api.Assertions.assertArrayEquals;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.api.Assertions.fail;
/**
* @author hakonhall
*/
public class UnixPathTest {
private final FileSystem fs = TestFileSystem.create();
@Test
void createParents() {
Path parentDirectory = fs.getPath("/a/b/c");
Path filePath = parentDirectory.resolve("bar");
UnixPath path = new UnixPath(filePath);
assertFalse(Files.exists(fs.getPath("/a")));
path.createParents();
assertTrue(Files.exists(parentDirectory));
}
@Test
void utf8File() {
String original = "foo\nbar\n";
UnixPath path = new UnixPath(fs.getPath("example.txt"));
path.writeUtf8File(original);
String fromFile = path.readUtf8File();
assertEquals(original, fromFile);
assertEquals(List.of("foo", "bar"), path.readLines());
}
@Test
void touch() {
UnixPath path = new UnixPath(fs.getPath("example.txt"));
assertTrue(path.create());
assertEquals("", path.readUtf8File());
assertFalse(path.create());
}
@Test
void permissions() {
String expectedPermissions = "rwxr-x---";
UnixPath path = new UnixPath(fs.getPath("file.txt"));
path.writeUtf8File("foo");
path.setPermissions(expectedPermissions);
assertEquals(expectedPermissions, path.getPermissions());
}
@Test
void badPermissionsString() {
assertThrows(IllegalArgumentException.class, () -> {
new UnixPath(fs.getPath("file.txt")).setPermissions("abcdefghi");
});
}
@Test
void owner() {
Path path = fs.getPath("file.txt");
UnixPath unixPath = new UnixPath(path);
unixPath.writeUtf8File("foo");
unixPath.setOwnerId(123);
assertEquals(123, unixPath.getOwnerId());
unixPath.setGroupId(456);
assertEquals(456, unixPath.getGroupId());
}
@Test
void createDirectoryWithPermissions() {
Path path = fs.getPath("dir");
UnixPath unixPath = new UnixPath(path);
String permissions = "rwxr-xr--";
assertTrue(unixPath.createDirectory(permissions));
assertTrue(unixPath.isDirectory());
assertEquals(permissions, unixPath.getPermissions());
assertFalse(unixPath.createDirectory(permissions));
}
@Test
void createSymbolicLink() {
String original = "foo\nbar\n";
UnixPath path = new UnixPath(fs.getPath("example.txt"));
path.writeUtf8File(original);
String fromFile = path.readUtf8File();
assertEquals(original, fromFile);
UnixPath link = path.createSymbolicLink(fs.getPath("link-to-example.txt"));
assertEquals(original, link.readUtf8File());
}
@Test
void readBytesIfExists() {
UnixPath path = new UnixPath(fs.getPath("example.txt"));
assertFalse(path.readBytesIfExists().isPresent());
path.writeBytes(new byte[]{42});
assertArrayEquals(new byte[]{42}, path.readBytesIfExists().get());
}
@Test
void deleteRecursively() throws Exception {
// Create the following file tree:
//
// /dir1
// |--- dir2
// |--- file1
// /link1 -> /dir1/dir2
//
var dir1 = fs.getPath("/dir1");
var dir2 = dir1.resolve("dir2");
var file1 = dir2.resolve("file1");
Files.createDirectories(dir2);
Files.writeString(file1, "file1");
var link1 = Files.createSymbolicLink(fs.getPath("/link1"), dir2);
new UnixPath(link1).deleteRecursively();
assertTrue(Files.exists(dir2), "Deleting " + link1 + " recursively does not remove " + dir2);
assertTrue(Files.exists(file1), "Deleting " + link1 + " recursively does not remove " + file1);
new UnixPath(dir1).deleteRecursively();
assertFalse(Files.exists(file1), dir1 + " deleted recursively");
assertFalse(Files.exists(dir2), dir1 + " deleted recursively");
assertFalse(Files.exists(dir1), dir1 + " deleted recursively");
}
@Test
void isEmptyDirectory() {
var path = new UnixPath((fs.getPath("/foo")));
assertFalse(path.isEmptyDirectory());
path.writeUtf8File("");
assertFalse(path.isEmptyDirectory());
path.deleteIfExists();
path.createDirectory();
assertTrue(path.isEmptyDirectory());
path.resolve("bar").writeUtf8File("");
assertFalse(path.isEmptyDirectory());
}
@Test
void atomicWrite() {
var path = new UnixPath(fs.getPath("/dir/foo"));
path.createParents();
path.writeUtf8File("bar");
path.atomicWriteBytes("bar v2".getBytes(StandardCharsets.UTF_8));
assertEquals("bar v2", path.readUtf8File());
}
@Test
void testParentAndFilename() {
var absolutePath = new UnixPath("/foo/bar");
assertEquals("/foo", absolutePath.getParent().toString());
assertEquals("bar", absolutePath.getFilename());
var pathWithoutSlash = new UnixPath("foo");
assertRuntimeException(IllegalStateException.class, "Path has no parent directory: 'foo'", pathWithoutSlash::getParent);
assertEquals("foo", pathWithoutSlash.getFilename());
var pathWithSlash = new UnixPath("/foo");
assertEquals("/", pathWithSlash.getParent().toString());
assertEquals("foo", pathWithSlash.getFilename());
assertRuntimeException(IllegalStateException.class, "Path has no parent directory: '/'", () -> new UnixPath("/").getParent());
assertRuntimeException(IllegalStateException.class, "Path has no filename: '/'", () -> new UnixPath("/").getFilename());
}
private <T extends RuntimeException> void assertRuntimeException(Class<T> baseClass, String message, Runnable runnable) {
try {
runnable.run();
fail("No exception was thrown");
} catch (RuntimeException e) {
if (!baseClass.isInstance(e)) {
fail("Exception class mismatch " + baseClass.getName() + " != " + e.getClass().getName());
}
assertEquals(message, e.getMessage());
}
}
}
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