How to use the hunter.Debugger function in hunter
To help you get started, we’ve selected a few hunter examples, based on popular ways it is used in public projects.
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ionelmc / python-hunter / tests / test_hunter.py View on Github 
def test_trace_api_expansion():
# simple use
with trace(function='foobar') as t:
assert t.handler == When(Q(function='foobar'), CallPrinter)
# 'or' by expression
with trace(module='foo', function='foobar') as t:
assert t.handler == When(Q(module='foo', function='foobar'), CallPrinter)
# pdb.set_trace
with trace(function='foobar', action=Debugger) as t:
assert str(t.handler) == str(When(Q(function='foobar'), Debugger))
# pdb.set_trace on any hits
with trace(module='foo', function='foobar', action=Debugger) as t:
assert str(t.handler) == str(When(Q(module='foo', function='foobar'), Debugger))
# pdb.set_trace when function is foobar, otherwise just print when module is foo
with trace(Q(function='foobar', action=Debugger), module='foo') as t:
assert str(t.handler) == str(When(And(
When(Q(function='foobar'), Debugger),
Q(module='foo')
), CallPrinter))
# dumping variables from stack
with trace(Q(function='foobar', action=VarsPrinter('foobar')), module='foo') as t:
assert str(t.handler) == str(When(And(
When(Q(function='foobar'), VarsPrinter('foobar')),calls = []
class FakePDB:
def __init__(self, foobar=1):
calls.append(foobar)
def set_trace(self, frame):
calls.append(frame.f_code.co_name)
with hunter.trace(
lambda event: event.locals.get('node') == 'Foobar',
module='test_hunter',
function='foo',
actions=[CodePrinter,
VarsPrinter('a', 'node', 'foo', 'test_debugger', stream=out),
Debugger(klass=FakePDB, foobar=2)]
):
def foo():
a = 1
node = 'Foobar'
node += 'x'
a += 2
return a
foo()
print(out.getvalue())
assert calls == [2, 'foo']
lm = LineMatcher(out.getvalue().splitlines())
pprint(lm.lines)
lm.fnmatch_lines_random([
"* [[]test_debugger => 'Foobar'[]]",def test_trace_api_expansion():
# simple use
with trace(function='foobar') as t:
assert t.handler == When(Q(function='foobar'), CallPrinter)
# 'or' by expression
with trace(module='foo', function='foobar') as t:
assert t.handler == When(Q(module='foo', function='foobar'), CallPrinter)
# pdb.set_trace
with trace(function='foobar', action=Debugger) as t:
assert str(t.handler) == str(When(Q(function='foobar'), Debugger))
# pdb.set_trace on any hits
with trace(module='foo', function='foobar', action=Debugger) as t:
assert str(t.handler) == str(When(Q(module='foo', function='foobar'), Debugger))
# pdb.set_trace when function is foobar, otherwise just print when module is foo
with trace(Q(function='foobar', action=Debugger), module='foo') as t:
assert str(t.handler) == str(When(And(
When(Q(function='foobar'), Debugger),
Q(module='foo')
), CallPrinter))
# dumping variables from stack
with trace(Q(function='foobar', action=VarsPrinter('foobar')), module='foo') as t:
assert str(t.handler) == str(When(And(hunter
Hunter is a flexible code tracing toolkit.
