+ @Test
+ public void testSnapshotPreCommit() {
+ //add 4 more entries
+ replicatedLogImpl.append(new MockReplicatedLogEntry(2, 4, new MockPayload("E")));
+ replicatedLogImpl.append(new MockReplicatedLogEntry(2, 5, new MockPayload("F")));
+ replicatedLogImpl.append(new MockReplicatedLogEntry(3, 6, new MockPayload("G")));
+ replicatedLogImpl.append(new MockReplicatedLogEntry(3, 7, new MockPayload("H")));
+
+ //sending negative values should not cause any changes
+ replicatedLogImpl.snapshotPreCommit(-1, -1);
+ assertEquals(8, replicatedLogImpl.size());
+ assertEquals(-1, replicatedLogImpl.getSnapshotIndex());
+
+ replicatedLogImpl.snapshotPreCommit(4, 3);
+ assertEquals(3, replicatedLogImpl.size());
+ assertEquals(4, replicatedLogImpl.getSnapshotIndex());
+
+ replicatedLogImpl.snapshotPreCommit(6, 3);
+ assertEquals(1, replicatedLogImpl.size());
+ assertEquals(6, replicatedLogImpl.getSnapshotIndex());
+
+ replicatedLogImpl.snapshotPreCommit(7, 3);
+ assertEquals(0, replicatedLogImpl.size());
+ assertEquals(7, replicatedLogImpl.getSnapshotIndex());
+
+ //running it again on an empty list should not throw exception
+ replicatedLogImpl.snapshotPreCommit(7, 3);
+ assertEquals(0, replicatedLogImpl.size());
+ assertEquals(7, replicatedLogImpl.getSnapshotIndex());
+
+ }
+
+ @Test
+ public void testIsPresent() {
+ assertTrue(replicatedLogImpl.isPresent(0));
+ assertTrue(replicatedLogImpl.isPresent(1));
+ assertTrue(replicatedLogImpl.isPresent(2));
+ assertTrue(replicatedLogImpl.isPresent(3));
+
+ replicatedLogImpl.append(new MockReplicatedLogEntry(2, 4, new MockPayload("D")));
+ replicatedLogImpl.snapshotPreCommit(3, 2); //snapshot on 3
+ replicatedLogImpl.snapshotCommit();
+
+ assertFalse(replicatedLogImpl.isPresent(0));
+ assertFalse(replicatedLogImpl.isPresent(1));
+ assertFalse(replicatedLogImpl.isPresent(2));
+ assertFalse(replicatedLogImpl.isPresent(3));
+ assertTrue(replicatedLogImpl.isPresent(4));
+
+ replicatedLogImpl.snapshotPreCommit(4, 2); //snapshot on 4
+ replicatedLogImpl.snapshotCommit();
+ assertFalse(replicatedLogImpl.isPresent(4));
+
+ replicatedLogImpl.append(new MockReplicatedLogEntry(2, 5, new MockPayload("D")));
+ assertTrue(replicatedLogImpl.isPresent(5));
+ }
+