functional_tests: improve RPC blockchain tests

tests/functional_tests/blockchain.py

@@ -28,75 +28,129 @@
 # STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 # THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-"""Test blockchain RPC calls
+import time
+
+"""Test daemon blockchain RPC calls
 
 Test the following RPCs:
     - get_info
     - generateblocks
+    - misc block retrieval
+    - pop_blocks
     - [TODO: many tests still need to be written]
 
 """
 
 from test_framework.daemon import Daemon
-from test_framework.wallet import Wallet
 
 class BlockchainTest():
     def run_test(self):
-        self._test_get_info()
-        self._test_hardfork_info()
         self._test_generateblocks(5)
 
-    def _test_get_info(self):
-        print('Test get_info')
-
-        daemon = Daemon()
-        res = daemon.get_info()
-
-        # difficulty should be set to 1 for this test
-        assert 'difficulty' in res.keys()
-        assert res['difficulty'] == 1;
-
-        # nettype should not be TESTNET
-        assert 'testnet' in res.keys()
-        assert res['testnet'] == False;
-
-        # nettype should not be STAGENET
-        assert 'stagenet' in res.keys()
-        assert res['stagenet'] == False;
-
-        # nettype should be FAKECHAIN
-        assert 'nettype' in res.keys()
-        assert res['nettype'] == "fakechain";
-
-        # free_space should be > 0
-        assert 'free_space' in res.keys()
-        assert res['free_space'] > 0
-
-        # height should be greater or equal to 1
-        assert 'height' in res.keys()
-        assert res['height'] >= 1
-
-
-    def _test_hardfork_info(self):
-        print('Test hard_fork_info')
-
-        daemon = Daemon()
-        res = daemon.hard_fork_info()
-
-        # hard_fork version should be set at height 1
-        assert 'earliest_height' in res.keys()
-        assert res['earliest_height'] == 1;
-
-
     def _test_generateblocks(self, blocks):
-        print("Test generating", blocks, 'blocks')
+        assert blocks >= 2
+
+        print "Test generating", blocks, 'blocks'
 
         daemon = Daemon()
-        res = daemon.get_info()
-        height = res['height']
-        res = daemon.generateblocks('42ey1afDFnn4886T7196doS9GPMzexD9gXpsZJDwVjeRVdFCSoHnv7KPbBeGpzJBzHRCAs9UxqeoyFQMYbqSWYTfJJQAWDm', blocks)
 
-        assert res['height'] == height + blocks - 1
+        # check info/height before generating blocks
+        res_info = daemon.get_info()
+        height = res_info.height
+        prev_block = res_info.top_block_hash
+        res_height = daemon.get_height()
+        assert res_height.height == height
+        assert int(res_info.wide_cumulative_difficulty) == (res_info.cumulative_difficulty_top64 << 64) + res_info.cumulative_difficulty
+        cumulative_difficulty = int(res_info.wide_cumulative_difficulty)
+
+        # we should not see a block at height
+        ok = False
+        try: daemon.getblock(height)
+        except: ok = True
+        assert ok
+
+        # generate blocks
+        res_generateblocks = daemon.generateblocks('42ey1afDFnn4886T7196doS9GPMzexD9gXpsZJDwVjeRVdFCSoHnv7KPbBeGpzJBzHRCAs9UxqeoyFQMYbqSWYTfJJQAWDm', blocks)
+
+        # check info/height after generateblocks blocks
+        assert res_generateblocks.height == height + blocks - 1
+        res_info = daemon.get_info()
+        assert res_info.height == height + blocks
+        assert res_info.top_block_hash != prev_block
+        res_height = daemon.get_height()
+        assert res_height.height == height + blocks
+
+        # get the blocks, check they have the right height
+        res_getblock = []
+        for n in range(blocks):
+            res_getblock.append(daemon.getblock(height + n))
+            block_header = res_getblock[n].block_header
+            assert abs(block_header.timestamp - time.time()) < 10 # within 10 seconds
+            assert block_header.height == height + n
+            assert block_header.orphan_status == False
+            assert block_header.depth == blocks - n - 1
+            assert block_header.prev_hash == prev_block, prev_block
+            assert int(block_header.wide_difficulty) == (block_header.difficulty_top64 << 64) + block_header.difficulty
+            assert int(block_header.wide_cumulative_difficulty) == (block_header.cumulative_difficulty_top64 << 64) + block_header.cumulative_difficulty
+            assert block_header.reward >= 600000000000 # tail emission
+            cumulative_difficulty += int(block_header.wide_difficulty)
+            assert cumulative_difficulty == int(block_header.wide_cumulative_difficulty)
+            assert block_header.block_size > 0
+            assert block_header.block_weight >= block_header.block_size
+            assert block_header.long_term_weight > 0
+            prev_block = block_header.hash
+
+        # we should not see a block after that
+        ok = False
+        try: daemon.getblock(height + blocks)
+        except: ok = True
+        assert ok
+
+        # getlastblockheader and by height/hash should return the same block
+        res_getlastblockheader = daemon.getlastblockheader()
+        assert res_getlastblockheader.block_header == block_header
+        res_getblockheaderbyhash = daemon.getblockheaderbyhash(prev_block)
+        assert res_getblockheaderbyhash.block_header == block_header
+        res_getblockheaderbyheight = daemon.getblockheaderbyheight(height + blocks - 1)
+        assert res_getblockheaderbyheight.block_header == block_header
+
+        # getting a block template after that should have the right height, etc
+        res_getblocktemplate = daemon.getblocktemplate('42ey1afDFnn4886T7196doS9GPMzexD9gXpsZJDwVjeRVdFCSoHnv7KPbBeGpzJBzHRCAs9UxqeoyFQMYbqSWYTfJJQAWDm')
+        assert res_getblocktemplate.height == height + blocks
+        assert res_getblocktemplate.reserved_offset > 0
+        assert res_getblocktemplate.prev_hash == res_info.top_block_hash
+        assert res_getblocktemplate.expected_reward >= 600000000000
+        assert len(res_getblocktemplate.blocktemplate_blob) > 0
+        assert len(res_getblocktemplate.blockhashing_blob) > 0
+        assert int(res_getblocktemplate.wide_difficulty) == (res_getblocktemplate.difficulty_top64 << 64) + res_getblocktemplate.difficulty
+
+        # diff etc should be the same
+        assert res_getblocktemplate.prev_hash == res_info.top_block_hash
+
+        res_getlastblockheader = daemon.getlastblockheader()
+
+        # pop a block
+        res_popblocks = daemon.pop_blocks(1)
+        assert res_popblocks.height == height + blocks - 1
+
+        res_info = daemon.get_info()
+        assert res_info.height == height + blocks - 1
+
+        # getlastblockheader and by height/hash should return the previous block
+        block_header = res_getblock[blocks - 2].block_header
+        block_header.depth = 0   # this will be different, ignore it
+        res_getlastblockheader = daemon.getlastblockheader()
+        assert res_getlastblockheader.block_header == block_header
+        res_getblockheaderbyhash = daemon.getblockheaderbyhash(block_header.hash)
+        assert res_getblockheaderbyhash.block_header == block_header
+        res_getblockheaderbyheight = daemon.getblockheaderbyheight(height + blocks - 2)
+        assert res_getblockheaderbyheight.block_header == block_header
+
+        # we should not see the popped block anymore
+        ok = False
+        try: daemon.getblock(height + blocks - 1)
+        except: ok = True
+        assert ok
 
 
 if __name__ == '__main__':