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# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See LICENSE in the project root
# for license information.
import pytest
from tests import debug, timeline
from tests.patterns import some
def test_evaluate(pyfile, target, run):
@pyfile
def code_to_debug():
import debuggee
debuggee.setup()
a = 1
b = {"one": 1, 2: "two"}
print(a, b) # @bp
with debug.Session() as session:
with run(session, target(code_to_debug)):
session.set_breakpoints(code_to_debug, all)
stop = session.wait_for_stop()
# Evaluate a variable name.
evaluate1 = session.request(
"evaluate", {"expression": "a", "frameId": stop.frame_id}
)
assert evaluate1 == some.dict.containing({"type": "int", "result": "1"})
# Evaluate dict indexing.
evaluate2 = session.request(
"evaluate", {"expression": "b[2]", "frameId": stop.frame_id}
)
assert evaluate2 == some.dict.containing({"type": "str", "result": "'two'"})
# Evaluate an expression with a binary operator.
evaluate3 = session.request(
"evaluate", {"expression": 'a + b["one"]', "frameId": stop.frame_id}
)
assert evaluate3 == some.dict.containing({"type": "int", "result": "2"})
session.request_continue()
def test_variables(pyfile, target, run):
@pyfile
def code_to_debug():
import debuggee
debuggee.setup()
a = 1
b = {"one": 1, 2: "two"}
c = 3
print([a, b, c]) # @bp
with debug.Session() as session:
session.config["variablePresentation"] = {"all": "hide", "protected": "inline"}
with run(session, target(code_to_debug)):
session.set_breakpoints(code_to_debug, all)
stop = session.wait_for_stop()
scopes = session.request("scopes", {"frameId": stop.frame_id})["scopes"]
globals_ref = scopes[0]["variablesReference"]
vars = session.request("variables", {"variablesReference": globals_ref})[
"variables"
]
# Variables must be sorted by name.
a, b, c = (v for v in vars if v["name"] in ("a", "b", "c"))
assert (a["name"], b["name"], c["name"]) == ("a", "b", "c")
# Fetch children variables of the dict.
b_vars = session.request(
"variables", {"variablesReference": b["variablesReference"]}
)["variables"]
assert b_vars == [
some.dict.containing(
{
"type": "int",
"value": "1",
"name": "'one'",
"evaluateName": "b['one']",
"variablesReference": 0,
}
),
some.dict.containing(
{
"type": "str",
"value": "'two'",
"name": "2",
"evaluateName": "b[2]",
"variablesReference": 0,
}
),
some.dict.containing(
{
"type": "int",
"value": "2",
"name": "len()",
"evaluateName": "len(b)",
"variablesReference": 0,
"presentationHint": {"attributes": ["readOnly"]},
}
),
]
session.request_continue()
def test_variable_sort(pyfile, target, run):
@pyfile
def code_to_debug():
import debuggee
debuggee.setup()
b_test = {"spam": "A", "eggs": "B", "abcd": "C"} # noqa
_b_test = 12 # noqa
__b_test = 13 # noqa
__b_test__ = 14 # noqa
a_test = 1 # noqa
_a_test = 2 # noqa
__a_test = 3 # noqa
__a_test__ = 4 # noqa
c_test = {1: "one", 2: "two", 10: "ten"} # noqa
_c_test = 22 # noqa
__c_test = 23 # noqa
__c_test__ = 24 # noqa
d = 3 # noqa
print("done") # @bp
with debug.Session() as session:
session.config["variablePresentation"] = {
"special": "group",
"protected": "inline",
}
with run(session, target(code_to_debug)):
session.set_breakpoints(code_to_debug, all)
stop = session.wait_for_stop()
scopes = session.request("scopes", {"frameId": stop.frame_id})["scopes"]
globals_ref = scopes[0]["variablesReference"]
vars = session.request("variables", {"variablesReference": globals_ref})[
"variables"
]
var_names = [v["name"] for v in vars if "_test" in v["name"]]
assert var_names == [
"a_test",
"b_test",
"c_test",
"_a_test",
"_b_test",
"_c_test",
"__a_test",
"__b_test",
"__c_test",
]
(special_vars_entry,) = (v for v in vars if v["name"] == "special variables")
special_vars_variables = session.request(
"variables",
{"variablesReference": special_vars_entry["variablesReference"]},
)["variables"]
special_vars_variables = [
v["name"] for v in special_vars_variables if "_test" in v["name"]
]
assert special_vars_variables == ["__a_test__", "__b_test__", "__c_test__"]
# String dict keys must be sorted as strings.
(b_test,) = (v for v in vars if v["name"] == "b_test")
b_test_vars = session.request(
"variables", {"variablesReference": b_test["variablesReference"]}
)["variables"]
var_names = [v["name"] for v in b_test_vars]
# Note that the special len() we manually create is not added to special variables.
expected = [
"special variables",
"function variables",
"'spam'",
"'eggs'",
"'abcd'",
"len()",
]
assert var_names == expected
# Numeric dict keys must be sorted as numbers.
if not "https://github.com/microsoft/ptvsd/issues/213":
(c_test,) = (v for v in vars if v["name"] == "c_test")
c_test_vars = session.request(
"variables", {"variablesReference": c_test["variablesReference"]}
)["variables"]
var_names = [v["name"] for v in c_test_vars]
# Note that the special len() we manually create is not added to special variables.
expected = ["1", "2", "10", "len()"]
assert var_names == expected
session.request_continue()
@pytest.mark.parametrize("ret_vis", ("show", "hide", "default"))
def test_return_values(pyfile, target, run, ret_vis):
@pyfile
def code_to_debug():
import debuggee
debuggee.setup()
class MyClass(object):
def do_something(self):
return "did something"
def my_func():
return "did more things"
MyClass().do_something() # @bp
my_func()
print("done")
expected1 = some.dict.containing(
{
"name": "(return) MyClass.do_something",
"value": "'did something'",
"type": "str",
"presentationHint": some.dict.containing(
{"attributes": some.list.containing("readOnly")}
),
}
)
expected2 = some.dict.containing(
{
"name": "(return) my_func",
"value": "'did more things'",
"type": "str",
"presentationHint": some.dict.containing(
{"attributes": some.list.containing("readOnly")}
),
}
)
with debug.Session() as session:
if ret_vis != "default":
session.config["showReturnValue"] = ret_vis != "hide"
with run(session, target(code_to_debug)):
session.set_breakpoints(code_to_debug, all)
stop = session.wait_for_stop()
session.request("next", {"threadId": stop.thread_id})
stop = session.wait_for_stop("step")
scopes = session.request("scopes", {"frameId": stop.frame_id})["scopes"]
globals_ref = scopes[0]["variablesReference"]
vars = session.request("variables", {"variablesReference": globals_ref})[
"variables"
]
ret_vars = [v for v in vars if v["name"].startswith("(return)")]
assert ret_vars == ([expected1] if ret_vis != "hide" else [])
session.request("next", {"threadId": stop.thread_id})
stop = session.wait_for_stop("step")
# Variable reference for the scope is not invalidated after the step.
vars = session.request("variables", {"variablesReference": globals_ref})[
"variables"
]
ret_vars = [v for v in vars if v["name"].startswith("(return)")]
assert ret_vars == ([expected1, expected2] if ret_vis != "hide" else [])
session.request_continue()
# On Python 3, variable names can contain Unicode characters.
def test_unicode(pyfile, target, run):
@pyfile
def code_to_debug():
import debuggee
import debugpy
globals()["\u16A0"] = 123
debuggee.setup()
debugpy.breakpoint()
print("break")
with debug.Session() as session:
with run(session, target(code_to_debug)):
pass
stop = session.wait_for_stop()
eval = session.request(
"evaluate", {"expression": "\u16A0", "frameId": stop.frame_id}
)
assert eval == some.dict.containing({"type": "int", "result": "123"})
session.request_continue()
# Numbers should be properly hex-formatted in all positions: variable values, list
# indices, dict keys etc.
def test_hex_numbers(pyfile, target, run):
@pyfile
def code_to_debug():
import debuggee
debuggee.setup()
a = 100
b = [1, 10, 100]
c = {10: 10, 100: 100, 1000: 1000}
d = {(1, 10, 100): (10000, 100000, 100000)}
print((a, b, c, d)) # @bp
with debug.Session() as session:
session.config["variablePresentation"] = {"all": "hide", "protected": "inline"}
with run(session, target(code_to_debug)):
session.set_breakpoints(code_to_debug, all)
stop = session.wait_for_stop()
scopes = session.request("scopes", {"frameId": stop.frame_id})["scopes"]
globals_ref = scopes[0]["variablesReference"]
vars = session.request(
"variables", {"variablesReference": globals_ref, "format": {"hex": True}}
)["variables"]
a, b, c, d = (v for v in vars if v["name"] in ("a", "b", "c", "d"))
assert a == some.dict.containing(
{
"name": "a",
"value": "0x64",
"type": "int",
"evaluateName": "a",
"variablesReference": 0,
}
)
assert b == some.dict.containing(
{
"name": "b",
"value": "[0x1, 0xa, 0x64]",
"type": "list",
"evaluateName": "b",
"variablesReference": some.dap.id,
}
)
assert c == some.dict.containing(
{
"name": "c",
"value": "{0xa: 0xa, 0x64: 0x64, 0x3e8: 0x3e8}",
"type": "dict",
"evaluateName": "c",
"variablesReference": some.dap.id,
}
)
assert d == some.dict.containing(
{
"name": "d",
"value": "{(0x1, 0xa, 0x64): (0x2710, 0x186a0, 0x186a0)}",
"type": "dict",
"evaluateName": "d",
"variablesReference": some.dap.id,
}
)
b_vars = session.request(
"variables",
{"variablesReference": b["variablesReference"], "format": {"hex": True}},
)["variables"]
assert b_vars == [
some.dict.containing(
{
"name": "0x0",
"value": "0x1",
"type": "int",
"evaluateName": "b[0]",
"variablesReference": 0,
}
),
some.dict.containing(
{
"name": "0x1",
"value": "0xa",
"type": "int",
"evaluateName": "b[1]",
"variablesReference": 0,
}
),
some.dict.containing(
{
"name": "0x2",
"value": "0x64",
"type": "int",
"evaluateName": "b[2]",
"variablesReference": 0,
}
),
some.dict.containing(
{
"name": "len()",
"value": "0x3",
"type": "int",
"evaluateName": "len(b)",
"variablesReference": 0,
"presentationHint": {"attributes": ["readOnly"]},
}
),
]
c_vars = session.request(
"variables",
{"variablesReference": c["variablesReference"], "format": {"hex": True}},
)["variables"]
# Use dict sequence on Python 3.6 onwards.
assert c_vars == [
some.dict.containing(
{
"name": "0xa",
"value": "0xa",
"type": "int",
"evaluateName": "c[10]",
"variablesReference": 0,
}
),
some.dict.containing(
{
"name": "0x64",
"value": "0x64",
"type": "int",
"evaluateName": "c[100]",
"variablesReference": 0,
}
),
some.dict.containing(
{
"name": "0x3e8",
"value": "0x3e8",
"type": "int",
"evaluateName": "c[1000]",
"variablesReference": 0,
}
),
some.dict.containing(
{
"name": "len()",
"value": "0x3",
"type": "int",
"evaluateName": "len(c)",
"variablesReference": 0,
"presentationHint": {"attributes": ["readOnly"]},
}
),
]
d_vars = session.request(
"variables",
{"variablesReference": d["variablesReference"], "format": {"hex": True}},
)["variables"]
assert d_vars == [
some.dict.containing(
{
"name": "(0x1, 0xa, 0x64)",
"value": "(0x2710, 0x186a0, 0x186a0)",
"type": "tuple",
"evaluateName": "d[(1, 10, 100)]",
"variablesReference": some.dap.id,
}
),
some.dict.containing(
{
"name": "len()",
"value": "0x1",
"type": "int",
"evaluateName": "len(d)",
"variablesReference": 0,
"presentationHint": {"attributes": ["readOnly"]},
}
),
]
d_item0 = d_vars[0]
d_item0_vars = session.request(
"variables",
{
"variablesReference": d_item0["variablesReference"],
"format": {"hex": True},
},
)["variables"]
assert d_item0_vars == [
some.dict.containing(
{
"name": "0x0",
"value": "0x2710",
"type": "int",
"evaluateName": "d[(1, 10, 100)][0]",
"variablesReference": 0,
}
),
some.dict.containing(
{
"name": "0x1",
"value": "0x186a0",
"type": "int",
"evaluateName": "d[(1, 10, 100)][1]",
"variablesReference": 0,
}
),
some.dict.containing(
{
"name": "0x2",
"value": "0x186a0",
"type": "int",
"evaluateName": "d[(1, 10, 100)][2]",
"variablesReference": 0,
}
),
some.dict.containing(
{
"name": "len()",
"value": "0x3",
"type": "int",
"evaluateName": "len(d[(1, 10, 100)])",
"variablesReference": 0,
"presentationHint": {"attributes": ["readOnly"]},
}
),
]
session.request_continue()
def test_set_variable(pyfile, target, run):
@pyfile
def code_to_debug():
import debuggee
import debugpy
from debuggee import backchannel
debuggee.setup()
a = 1
debugpy.breakpoint()
backchannel.send(a)
with debug.Session() as session:
backchannel = session.open_backchannel()
with run(session, target(code_to_debug)):
pass
stop = session.wait_for_stop()
scopes = session.request("scopes", {"frameId": stop.frame_id})["scopes"]
globals_ref = scopes[0]["variablesReference"]
vars = session.request("variables", {"variablesReference": globals_ref})[
"variables"
]
(a,) = (v for v in vars if v["name"] == "a")
assert a == some.dict.containing(
{
"type": "int",
"value": "1",
"name": "a",
"evaluateName": "a",
"variablesReference": 0,
}
)
set_a = session.request(
"setVariable",
{"variablesReference": globals_ref, "name": "a", "value": "1000"},
)
assert set_a == some.dict.containing({"type": "int", "value": "1000"})
session.request_continue()
assert backchannel.receive() == 1000
def test_set_expression(pyfile, target, run):
@pyfile
def code_to_debug():
import debuggee
from debuggee import backchannel
debuggee.setup()
a = 1
backchannel.send(a) # @bp
with debug.Session() as session:
backchannel = session.open_backchannel()
with run(session, target(code_to_debug)):
session.set_breakpoints(code_to_debug, all)
stop = session.wait_for_stop()
scopes = session.request("scopes", {"frameId": stop.frame_id})["scopes"]
globals_ref = scopes[0]["variablesReference"]
vars = session.request("variables", {"variablesReference": globals_ref})[
"variables"
]
(a,) = (v for v in vars if v["name"] == "a")
assert a == some.dict.containing(
{
"type": "int",
"value": "1",
"name": "a",
"evaluateName": "a",
"variablesReference": 0,
}
)
set_a = session.request(
"setExpression",
{"frameId": stop.frame_id, "expression": "a", "value": "1000"},
)
assert set_a == some.dict.containing({"type": "int", "value": "1000"})
session.request_continue()
assert backchannel.receive() == 1000
def test_evaluate_thread_locks(pyfile, target, run):
@pyfile
def code_to_debug():
"""
The idea here is that a secondary thread does the processing of instructions,
so, when all threads are stopped, doing an evaluation for:
processor.process('xxx')
would be locked until secondary threads start running.
See: https://github.com/microsoft/debugpy/issues/157
"""
import debuggee
import queue
import threading
debuggee.setup()
class EchoThread(threading.Thread):
def __init__(self, queue):
threading.Thread.__init__(self)
self._queue = queue
def run(self):
while True:
obj = self._queue.get()
if obj == "finish":
break
print("processed", obj.value)
obj.event.set()
class NotificationObject(object):
def __init__(self, value):
self.value = value
self.event = threading.Event()
class Processor(object):
def __init__(self, queue):
self._queue = queue
def process(self, i):
obj = NotificationObject(i)
self._queue.put(obj)
assert obj.event.wait()
def finish(self):
self._queue.put("finish")
if __name__ == "__main__":
q = queue.Queue()
echo_thread = EchoThread(q)
processor = Processor(q)
echo_thread.start()
processor.process(1)
processor.process(2) # @bp
processor.process(3)
processor.finish()
with debug.Session() as session:
# During the evaluation we'll actually have continued/stopped events because
# we're letting threads run at that time. Let's ignore these in the test.
session.ignore_unobserved.extend([timeline.Event("stopped")])
session.config.env.update({"PYDEVD_UNBLOCK_THREADS_TIMEOUT": "0.5"})
with run(session, target(code_to_debug)):
session.set_breakpoints(code_to_debug, all)
stop = session.wait_for_stop()
evaluate = session.request(
"evaluate",
{"expression": "processor.process('foo')", "frameId": stop.frame_id},
)
assert evaluate == some.dict.containing({"result": "None"})
session.request_continue()