pipeline tests converted to pytest

1 files changed, 202 insertions, 0 deletions

diff --git a/tests/test_pipeline.py b/tests/test_pipeline.py
new file mode 100644
index 0000000..ee860e7
--- /dev/null
+++ b/tests/test_pipeline.py
@@ -0,0 +1,202 @@
+from __future__ import with_statement
+import pytest
+
+import redis
+from redis._compat import b
+
+
+class TestPipeline(object):
+    def test_pipeline(self, r):
+        with r.pipeline() as pipe:
+            pipe.set('a', 'a1').get('a').zadd('z', z1=1).zadd('z', z2=4)
+            pipe.zincrby('z', 'z1').zrange('z', 0, 5, withscores=True)
+            assert pipe.execute() == \
+                [
+                    True,
+                    b('a1'),
+                    True,
+                    True,
+                    2.0,
+                    [(b('z1'), 2.0), (b('z2'), 4)],
+                ]
+
+    def test_pipeline_length(self, r):
+        with r.pipeline() as pipe:
+            # Initially empty.
+            assert len(pipe) == 0
+            assert not pipe
+
+            # Fill 'er up!
+            pipe.set('a', 'a1').set('b', 'b1').set('c', 'c1')
+            assert len(pipe) == 3
+            assert pipe
+
+            # Execute calls reset(), so empty once again.
+            pipe.execute()
+            assert len(pipe) == 0
+            assert not pipe
+
+    def test_pipeline_no_transaction(self, r):
+        with r.pipeline(transaction=False) as pipe:
+            pipe.set('a', 'a1').set('b', 'b1').set('c', 'c1')
+            assert pipe.execute() == [True, True, True]
+            assert r['a'] == b('a1')
+            assert r['b'] == b('b1')
+            assert r['c'] == b('c1')
+
+    def test_pipeline_no_transaction_watch(self, r):
+        r['a'] = 0
+
+        with r.pipeline(transaction=False) as pipe:
+            pipe.watch('a')
+            a = pipe.get('a')
+
+            pipe.multi()
+            pipe.set('a', int(a) + 1)
+            assert pipe.execute() == [True]
+
+    def test_pipeline_no_transaction_watch_failure(self, r):
+        r['a'] = 0
+
+        with r.pipeline(transaction=False) as pipe:
+            pipe.watch('a')
+            a = pipe.get('a')
+
+            r['a'] = 'bad'
+
+            pipe.multi()
+            pipe.set('a', int(a) + 1)
+
+            with pytest.raises(redis.WatchError):
+                pipe.execute()
+
+            assert r['a'] == b('bad')
+
+    def test_exec_error_in_response(self, r):
+        """
+        an invalid pipeline command at exec time adds the exception instance
+        to the list of returned values
+        """
+        r['c'] = 'a'
+        with r.pipeline() as pipe:
+            pipe.set('a', 1).set('b', 2).lpush('c', 3).set('d', 4)
+            result = pipe.execute(raise_on_error=False)
+
+            assert result[0]
+            assert r['a'] == b('1')
+            assert result[1]
+            assert r['b'] == b('2')
+
+            # we can't lpush to a key that's a string value, so this should
+            # be a ResponseError exception
+            assert isinstance(result[2], redis.ResponseError)
+            assert r['c'] == b('a')
+
+            # since this isn't a transaction, the other commands after the
+            # error are still executed
+            assert result[3]
+            assert r['d'] == b('4')
+
+            # make sure the pipe was restored to a working state
+            assert pipe.set('z', 'zzz').execute() == [True]
+            assert r['z'] == b('zzz')
+
+    def test_exec_error_raised(self, r):
+        r['c'] = 'a'
+        with r.pipeline() as pipe:
+            pipe.set('a', 1).set('b', 2).lpush('c', 3).set('d', 4)
+            with pytest.raises(redis.ResponseError):
+                pipe.execute()
+
+            # make sure the pipe was restored to a working state
+            assert pipe.set('z', 'zzz').execute() == [True]
+            assert r['z'] == b('zzz')
+
+    def test_parse_error_raised(self, r):
+        with r.pipeline() as pipe:
+            # the zrem is invalid because we don't pass any keys to it
+            pipe.set('a', 1).zrem('b').set('b', 2)
+            with pytest.raises(redis.ResponseError):
+                pipe.execute()
+
+            # make sure the pipe was restored to a working state
+            assert pipe.set('z', 'zzz').execute() == [True]
+            assert r['z'] == b('zzz')
+
+    def test_watch_succeed(self, r):
+        r['a'] = 1
+        r['b'] = 2
+
+        with r.pipeline() as pipe:
+            pipe.watch('a', 'b')
+            assert pipe.watching
+            a_value = pipe.get('a')
+            b_value = pipe.get('b')
+            assert a_value == b('1')
+            assert b_value == b('2')
+            pipe.multi()
+
+            pipe.set('c', 3)
+            assert pipe.execute() == [True]
+            assert not pipe.watching
+
+    def test_watch_failure(self, r):
+        r['a'] = 1
+        r['b'] = 2
+
+        with r.pipeline() as pipe:
+            pipe.watch('a', 'b')
+            r['b'] = 3
+            pipe.multi()
+            pipe.get('a')
+            with pytest.raises(redis.WatchError):
+                pipe.execute()
+
+            assert not pipe.watching
+
+    def test_unwatch(self, r):
+        r['a'] = 1
+        r['b'] = 2
+
+        with r.pipeline() as pipe:
+            pipe.watch('a', 'b')
+            r['b'] = 3
+            pipe.unwatch()
+            assert not pipe.watching
+            pipe.get('a')
+            assert pipe.execute() == [b('1')]
+
+    def test_transaction_callable(self, r):
+        r['a'] = 1
+        r['b'] = 2
+        has_run = []
+
+        def my_transaction(pipe):
+            a_value = pipe.get('a')
+            assert a_value in (b('1'), b('2'))
+            b_value = pipe.get('b')
+            assert b_value == b('2')
+
+            # silly run-once code... incr's "a" so WatchError should be raised
+            # forcing this all to run again. this should incr "a" once to "2"
+            if not has_run:
+                r.incr('a')
+                has_run.append('it has')
+
+            pipe.multi()
+            pipe.set('c', int(a_value) + int(b_value))
+
+        result = r.transaction(my_transaction, 'a', 'b')
+        assert result == [True]
+        assert r['c'] == b('4')
+
+    def test_exec_error_in_no_transaction_pipeline(self, r):
+        r['a'] = 1
+        with r.pipeline(transaction=False) as pipe:
+            pipe.llen('a')
+            pipe.expire('a', 100)
+
+            with pytest.raises(redis.ResponseError):
+                pipe.execute()
+
+        assert r['a'] == b('1')