public void testSymlinks() throws Exception {
File scratchDirectory = Files.createTempDir();
File newFile = createFileIn("New.java", scratchDirectory);
File rootDirectory = Files.createTempDir();
File subDirectory = Files.createTempDir();
ResourceAccumulator resourceAccumulator =
new ResourceAccumulator(rootDirectory.toPath(), createInclusivePathPrefixSet());
assertTrue(getResources(resourceAccumulator).isEmpty());
// Symlink in a subdirectory and then symlink in a contained file.
java.nio.file.Files.createSymbolicLink(
new File(rootDirectory, "sublink").toPath(), subDirectory.toPath())
.toFile();
java.nio.file.Files.createSymbolicLink(
new File(subDirectory, "New.java").toPath(), newFile.toPath())
.toFile();
waitForFileEvents();
List<AbstractResource> resources = getResources(resourceAccumulator);
assertEquals(1, resources.size());
assertTrue(resources.get(0).getPath().endsWith("sublink/New.java"));
resourceAccumulator.shutdown();
}
public void testMultipleListeners() throws Exception {
File rootDirectory = Files.createTempDir();
File subDirectory = createDirectoryIn("subdir", rootDirectory);
ResourceAccumulator resourceAccumulator1 =
new ResourceAccumulator(rootDirectory.toPath(), createInclusivePathPrefixSet());
ResourceAccumulator resourceAccumulator2 =
new ResourceAccumulator(rootDirectory.toPath(), createInclusivePathPrefixSet());
assertTrue(getResources(resourceAccumulator1).isEmpty());
assertTrue(getResources(resourceAccumulator2).isEmpty());
createFileIn("New.java", subDirectory);
waitForFileEvents();
List<AbstractResource> resources1 = getResources(resourceAccumulator1);
assertEquals(1, resources1.size());
assertTrue(resources1.get(0).getPath().endsWith("New.java"));
List<AbstractResource> resources2 = getResources(resourceAccumulator2);
assertEquals(1, resources2.size());
assertTrue(resources2.get(0).getPath().endsWith("New.java"));
resourceAccumulator1.shutdown();
resourceAccumulator2.shutdown();
}
public void testSymlinkInfiniteLoop() throws Exception {
File rootDirectory = Files.createTempDir();
File subDirectory = Files.createTempDir();
ResourceAccumulator resourceAccumulator =
new ResourceAccumulator(rootDirectory.toPath(), createInclusivePathPrefixSet());
assertTrue(getResources(resourceAccumulator).isEmpty());
// Symlink in a loop
java.nio.file.Files.createSymbolicLink(
new File(rootDirectory, "sublink").toPath(), subDirectory.toPath())
.toFile();
java.nio.file.Files.createSymbolicLink(
new File(subDirectory, "sublink").toPath(), rootDirectory.toPath())
.toFile();
createFileIn("New.java", subDirectory);
waitForFileEvents();
try {
// Should throw an error if resourceAccumulator got stuck in an infinite directory scan loop.
getResources(resourceAccumulator);
fail();
} catch (FileSystemException expected) {
// Expected
}
resourceAccumulator.shutdown();
}
public void testRenameParentDirectory() throws Exception {
File rootDirectory = Files.createTempDir();
File parentDirectory = createDirectoryIn("original_dir", rootDirectory);
File subDirectory = createDirectoryIn("subdir", parentDirectory);
createFileIn("Name1.java", subDirectory);
createFileIn("Name2.java", subDirectory);
File renamedParentDirectory = new File(rootDirectory, "new_dir");
ResourceAccumulator resourceAccumulator =
new ResourceAccumulator(rootDirectory.toPath(), createInclusivePathPrefixSet());
List<AbstractResource> resources = getResources(resourceAccumulator);
assertEquals(2, resources.size());
assertTrue(resources.get(0).getPath().endsWith("original_dir/subdir/Name1.java"));
assertTrue(resources.get(1).getPath().endsWith("original_dir/subdir/Name2.java"));
parentDirectory.renameTo(renamedParentDirectory);
waitForFileEvents();
resources = getResources(resourceAccumulator);
assertEquals(2, resources.size());
assertTrue(resources.get(0).getPath().endsWith("new_dir/subdir/Name1.java"));
assertTrue(resources.get(1).getPath().endsWith("new_dir/subdir/Name2.java"));
resourceAccumulator.shutdown();
}
private List<AbstractResource> getResources(ResourceAccumulator resourceAccumulator)
throws IOException {
resourceAccumulator.refreshResources();
List<AbstractResource> list = Lists.newArrayList(resourceAccumulator.getResources().keySet());
Collections.sort(
list,
new Comparator<AbstractResource>() {
@Override
public int compare(AbstractResource a, AbstractResource b) {
return a.getLocation().compareTo(b.getLocation());
}
});
return list;
}
public void testDeleteFile() throws Exception {
File rootDirectory = Files.createTempDir();
File subDirectory = createDirectoryIn("subdir", rootDirectory);
File originalFile = createFileIn("SomeFile.java", subDirectory);
ResourceAccumulator resourceAccumulator =
new ResourceAccumulator(rootDirectory.toPath(), createInclusivePathPrefixSet());
List<AbstractResource> resources = getResources(resourceAccumulator);
assertEquals(1, resources.size());
assertTrue(resources.get(0).getPath().endsWith("SomeFile.java"));
originalFile.delete();
waitForFileEvents();
assertTrue(getResources(resourceAccumulator).isEmpty());
resourceAccumulator.shutdown();
}
public void testListensInNewDirectories() throws Exception {
File rootDirectory = Files.createTempDir();
ResourceAccumulator resourceAccumulator =
new ResourceAccumulator(rootDirectory.toPath(), createInclusivePathPrefixSet());
assertTrue(getResources(resourceAccumulator).isEmpty());
// Create a new directory and contained file AFTER the root directory has started being listened
// to.
File subDirectory = createDirectoryIn("subdir", rootDirectory);
createFileIn("New.java", subDirectory);
waitForFileEvents();
List<AbstractResource> resources = getResources(resourceAccumulator);
assertEquals(1, resources.size());
assertTrue(resources.get(0).getPath().endsWith("New.java"));
resourceAccumulator.shutdown();
}