def test_start_finish(self):
with ContextHelper() as ctx:
tracer = tracer_module.Tracer(sampler=AlwaysOnSampler())
parent = OpenCensusSpan()
wrapped_class = parent.span()
assert wrapped_class.span_instance.end_time is None
wrapped_class.start()
wrapped_class.finish()
assert wrapped_class.span_instance.start_time is not None
assert wrapped_class.span_instance.end_time is not None
parent.finish()
def test_span(self):
exporter = MockExporter()
with ContextHelper() as ctx:
tracer = tracer_module.Tracer(sampler=AlwaysOnSampler(), exporter=exporter)
assert OpenCensusSpan.get_current_tracer() is tracer
wrapped_class = OpenCensusSpan()
assert tracer.current_span() == wrapped_class.span_instance
child = wrapped_class.span()
assert tracer.current_span() == child.span_instance
assert child.span_instance.name == "span"
assert child.span_instance.context_tracer.trace_id == tracer.span_context.trace_id
assert child.span_instance.parent_span is wrapped_class.span_instance
tracer.finish()
exporter.build_tree()
parent = exporter.root
assert len(parent.children) == 1
assert parent.children[0].span_data.span_id == child.span_instance.span_id