@Test
public void cacheShouldFailOnNonExistentEntries() throws Exception {
FileSystemCache cache = new FileSystemCache(createTmpFile());
cache.put("foo", c1);
cache.save();
cache = new FileSystemCache(createTmpFile());
assertFalse(cache.isUpToDate("bar", c2));
}
@Test
public void cacheShouldPersistNewEntries() throws Exception {
FileSystemCache cache = new FileSystemCache(createTmpFile());
cache.put("foo", c1);
cache.put("bar", c2);
cache.save();
cache = new FileSystemCache(createTmpFile());
assertTrue(cache.isUpToDate("foo", c1));
assertTrue(cache.isUpToDate("bar", c2));
}
@Test
public void cacheShouldNotRewriteFileIfAllFilesTouched() throws Exception {
FileSystemCache cache = new FileSystemCache(createTmpFile());
cache.put("foo", c1);
cache.put("bar", c2);
cache.save();
cache = new FileSystemCache(createTmpFile());
tmpFile.delete();
assertTrue(cache.isUpToDate("foo", c1));
assertTrue(cache.isUpToDate("bar", c2));
cache.save();
assertFalse(tmpFile.exists());
}