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|
from contextlib import closing
from unittest import mock
import pytest
import redis
from .conftest import skip_if_server_version_lt, wait_for_command
class TestPipeline:
def test_pipeline_is_true(self, r):
"Ensure pipeline instances are not false-y"
with r.pipeline() as pipe:
assert pipe
def test_pipeline(self, r):
with r.pipeline() as pipe:
(
pipe.set("a", "a1")
.get("a")
.zadd("z", {"z1": 1})
.zadd("z", {"z2": 4})
.zincrby("z", 1, "z1")
)
assert pipe.execute() == [
True,
b"a1",
True,
True,
2.0,
]
def test_pipeline_memoryview(self, r):
with r.pipeline() as pipe:
(pipe.set("a", memoryview(b"a1")).get("a"))
assert pipe.execute() == [True, b"a1"]
def test_pipeline_length(self, r):
with r.pipeline() as pipe:
# Initially empty.
assert len(pipe) == 0
# Fill 'er up!
pipe.set("a", "a1").set("b", "b1").set("c", "c1")
assert len(pipe) == 3
# Execute calls reset(), so empty once again.
pipe.execute()
assert len(pipe) == 0
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"
@pytest.mark.onlynoncluster
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]
@pytest.mark.onlynoncluster
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) as ex:
pipe.execute()
assert str(ex.value).startswith(
"Command # 3 (LPUSH c 3) of pipeline caused error: "
)
# make sure the pipe was restored to a working state
assert pipe.set("z", "zzz").execute() == [True]
assert r["z"] == b"zzz"
@pytest.mark.onlynoncluster
def test_transaction_with_empty_error_command(self, r):
"""
Commands with custom EMPTY_ERROR functionality return their default
values in the pipeline no matter the raise_on_error preference
"""
for error_switch in (True, False):
with r.pipeline() as pipe:
pipe.set("a", 1).mget([]).set("c", 3)
result = pipe.execute(raise_on_error=error_switch)
assert result[0]
assert result[1] == []
assert result[2]
@pytest.mark.onlynoncluster
def test_pipeline_with_empty_error_command(self, r):
"""
Commands with custom EMPTY_ERROR functionality return their default
values in the pipeline no matter the raise_on_error preference
"""
for error_switch in (True, False):
with r.pipeline(transaction=False) as pipe:
pipe.set("a", 1).mget([]).set("c", 3)
result = pipe.execute(raise_on_error=error_switch)
assert result[0]
assert result[1] == []
assert result[2]
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) as ex:
pipe.execute()
assert str(ex.value).startswith(
"Command # 2 (ZREM b) of pipeline caused error: "
)
# make sure the pipe was restored to a working state
assert pipe.set("z", "zzz").execute() == [True]
assert r["z"] == b"zzz"
@pytest.mark.onlynoncluster
def test_parse_error_raised_transaction(self, r):
with r.pipeline() as pipe:
pipe.multi()
# 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) as ex:
pipe.execute()
assert str(ex.value).startswith(
"Command # 2 (ZREM b) of pipeline caused error: "
)
# make sure the pipe was restored to a working state
assert pipe.set("z", "zzz").execute() == [True]
assert r["z"] == b"zzz"
@pytest.mark.onlynoncluster
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
@pytest.mark.onlynoncluster
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
@pytest.mark.onlynoncluster
def test_watch_failure_in_empty_transaction(self, r):
r["a"] = 1
r["b"] = 2
with r.pipeline() as pipe:
pipe.watch("a", "b")
r["b"] = 3
pipe.multi()
with pytest.raises(redis.WatchError):
pipe.execute()
assert not pipe.watching
@pytest.mark.onlynoncluster
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"]
@pytest.mark.onlynoncluster
def test_watch_exec_no_unwatch(self, r):
r["a"] = 1
r["b"] = 2
with r.monitor() as m:
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
unwatch_command = wait_for_command(r, m, "UNWATCH")
assert unwatch_command is None, "should not send UNWATCH"
@pytest.mark.onlynoncluster
def test_watch_reset_unwatch(self, r):
r["a"] = 1
with r.monitor() as m:
with r.pipeline() as pipe:
pipe.watch("a")
assert pipe.watching
pipe.reset()
assert not pipe.watching
unwatch_command = wait_for_command(r, m, "UNWATCH")
assert unwatch_command is not None
assert unwatch_command["command"] == "UNWATCH"
@pytest.mark.onlynoncluster
def test_close_is_reset(self, r):
with r.pipeline() as pipe:
called = 0
def mock_reset():
nonlocal called
called += 1
with mock.patch.object(pipe, "reset", mock_reset):
pipe.close()
assert called == 1
@pytest.mark.onlynoncluster
def test_closing(self, r):
with closing(r.pipeline()):
pass
@pytest.mark.onlynoncluster
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"
@pytest.mark.onlynoncluster
def test_transaction_callable_returns_value_from_callable(self, r):
def callback(pipe):
# No need to do anything here since we only want the return value
return "a"
res = r.transaction(callback, "my-key", value_from_callable=True)
assert res == "a"
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) as ex:
pipe.execute()
assert str(ex.value).startswith(
"Command # 1 (LLEN a) of pipeline caused error: "
)
assert r["a"] == b"1"
def test_exec_error_in_no_transaction_pipeline_unicode_command(self, r):
key = chr(3456) + "abcd" + chr(3421)
r[key] = 1
with r.pipeline(transaction=False) as pipe:
pipe.llen(key)
pipe.expire(key, 100)
with pytest.raises(redis.ResponseError) as ex:
pipe.execute()
expected = f"Command # 1 (LLEN {key}) of pipeline caused error: "
assert str(ex.value).startswith(expected)
assert r[key] == b"1"
def test_exec_error_in_pipeline_truncated(self, r):
key = "a" * 50
a_value = "a" * 20
b_value = "b" * 20
r[key] = 1
with r.pipeline(transaction=False) as pipe:
pipe.hset(key, mapping={"field_a": a_value, "field_b": b_value})
pipe.expire(key, 100)
with pytest.raises(redis.ResponseError) as ex:
pipe.execute()
expected = f"Command # 1 (HSET {key} field_a {a_value} field_b...) of pipeline caused error: "
assert str(ex.value).startswith(expected)
def test_pipeline_with_bitfield(self, r):
with r.pipeline() as pipe:
pipe.set("a", "1")
bf = pipe.bitfield("b")
pipe2 = (
bf.set("u8", 8, 255)
.get("u8", 0)
.get("u4", 8) # 1111
.get("u4", 12) # 1111
.get("u4", 13) # 1110
.execute()
)
pipe.get("a")
response = pipe.execute()
assert pipe == pipe2
assert response == [True, [0, 0, 15, 15, 14], b"1"]
@pytest.mark.onlynoncluster
@skip_if_server_version_lt("2.0.0")
def test_pipeline_discard(self, r):
# empty pipeline should raise an error
with r.pipeline() as pipe:
pipe.set("key", "someval")
pipe.discard()
with pytest.raises(redis.exceptions.ResponseError):
pipe.execute()
# setting a pipeline and discarding should do the same
with r.pipeline() as pipe:
pipe.set("key", "someval")
pipe.set("someotherkey", "val")
response = pipe.execute()
pipe.set("key", "another value!")
pipe.discard()
pipe.set("key", "another vae!")
with pytest.raises(redis.exceptions.ResponseError):
pipe.execute()
pipe.set("foo", "bar")
response = pipe.execute()
assert response[0]
assert r.get("foo") == b"bar"
@pytest.mark.onlynoncluster
def test_send_set_commands_over_pipeline(self, r: redis.Redis):
pipe = r.pipeline()
pipe.hset("hash:1", "foo", "bar")
pipe.hset("hash:1", "bar", "foo")
pipe.hset("hash:1", "baz", "bar")
pipe.hgetall("hash:1")
resp = pipe.execute()
assert resp == [1, 1, 1, {b"bar": b"foo", b"baz": b"bar", b"foo": b"bar"}]
|
