@Test
public void testTruncatedFileReturnsDefault() throws IOException {
assertTrue(FILE.createNewFile());
assertEquals(0, FILE.length());
BestEffortLongFile f = new BestEffortLongFile(FILE, 12345L);
try {
assertEquals(12345L, f.get());
} finally {
f.close();
}
}
@Test
public void testGetSet() throws IOException {
BestEffortLongFile f = new BestEffortLongFile(FILE, 12345L);
try {
// Before the file exists, should return default.
assertEquals(12345L, f.get());
// And first access should open it.
assertTrue(FILE.exists());
Random r = new Random();
for (int i = 0; i < 100; i++) {
long newVal = r.nextLong();
// Changing the value should be reflected in the next get() call.
f.set(newVal);
assertEquals(newVal, f.get());
// And should be reflected in a new instance (ie it actually got
// written to the file)
BestEffortLongFile f2 = new BestEffortLongFile(FILE, 999L);
try {
assertEquals(newVal, f2.get());
} finally {
IOUtils.closeStream(f2);
}
}
} finally {
IOUtils.closeStream(f);
}
}