/**
* Tests adding jars one-by-one to a job's configuration.
*
* @throws IOException If there is a problem adding the jars.
*/
@Test
public void testAddJar() throws IOException {
// Add each valid jar path to the distributed cache configuration, and verify each was
// added correctly in turn.
for (int i = 0; i < testFilePaths.length; i++) {
DistCache.addJarToDistributedCache(testConf, testFilePaths[i]);
assertEquals(
"tmpjars configuration var does not contain expected value.",
StringUtils.join(testFileQualifiedPaths, ",", 0, i + 1),
testConf.get("tmpjars"));
}
}
/**
* Tests that adding a directory of jars to the configuration works as expected. .jar files under
* the added directory should be added to the configuration, and all other files should be
* skipped.
*
* @throws IOException If there is a problem adding the jar directory to the configuration.
*/
@Test
public void testAddJarDirectory() throws IOException {
DistCache.addJarDirToDistributedCache(testConf, testFolder.getRoot().getCanonicalPath());
// Throw the added jar paths in a set to detect duplicates.
String[] splitJarPaths = StringUtils.split(testConf.get("tmpjars"), ",");
Set<String> addedJarPaths = new HashSet<String>();
for (String path : splitJarPaths) {
addedJarPaths.add(path);
}
assertEquals(
"Incorrect number of jar paths added.", testFilePaths.length, addedJarPaths.size());
// Ensure all expected paths were added.
for (int i = 0; i < testFileQualifiedPaths.length; i++) {
assertTrue(
"Expected jar path missing from jar paths added to tmpjars: " + testFileQualifiedPaths[i],
addedJarPaths.contains(testFileQualifiedPaths[i]));
}
}
/**
* Tests that attempting to add the path to a jar that does not exist to the configuration throws
* an exception.
*
* @throws IOException If the added jar path does not exist. This exception is expected.
*/
@Test(expected = IOException.class)
public void testAddJarThatDoesntExist() throws IOException {
DistCache.addJarToDistributedCache(testConf, "/garbage/doesntexist.jar");
}
/**
* Tests that adding a jar directory that is not a directory to the configuration throws an
* exception.
*
* @throws IOException If the added jar directory is not a directory. This exception is expected.
*/
@Test(expected = IOException.class)
public void testAddJarDirectoryNotDirectory() throws IOException {
DistCache.addJarDirToDistributedCache(testConf, testFilePaths[0]);
}