chore(profiling): improve typing (#15232)

## Description

As title says. Should be a no-op functionally.

Author: KowalskiThomas

ddtrace/internal/datadog/profiling/ddup/_ddup.pyi

@@ -4,20 +4,21 @@ from typing import Union
 from .._types import StringType
 from ddtrace._trace.span import Span
 from ddtrace._trace.tracer import Tracer
+import ddtrace
 
 def config(
-    env: StringType,
-    service: StringType,
-    version: StringType,
-    tags: Optional[Dict[Union[str, bytes], Union[str, bytes]]],
-    max_nframes: Optional[int],
-    timeline_enabled: Optional[bool],
-    output_filename: Optional[str],
-    sample_pool_capacity: Optional[int],
-    timeout: Optional[int],
+    env: StringType = None,
+    service: StringType = None,
+    version: StringType = None,
+    tags: Optional[Dict[Union[str, bytes], Union[str, bytes]]] = None,
+    max_nframes: Optional[int] = None,
+    timeline_enabled: Optional[bool] = None,
+    output_filename: Optional[str] = None,
+    sample_pool_capacity: Optional[int] = None,
+    timeout: Optional[int] = None,
 ) -> None: ...
 def start() -> None: ...
-def upload(tracer: Optional[Tracer], enable_code_provenance: Optional[bool]) -> None: ...
+def upload(tracer: Optional[Tracer] = ddtrace.tracer, enable_code_provenance: Optional[bool] = None) -> None: ...
 
 class SampleHandle:
     def flush_sample(self) -> None: ...

ddtrace/profiling/collector/stack.pyi

@@ -5,3 +5,7 @@ from ddtrace.profiling import collector
 
 class StackCollector(collector.PeriodicCollector):
     tracer: typing.Optional[Tracer]
+    min_interval_time: float
+
+    def _init(self) -> None: ...
+    def _compute_new_interval(self, used_wall_time_ns: int) -> float: ...

tests/profiling/collector/test_stack.py

@@ -96,6 +96,7 @@ def test_collect_once(tmp_path):
 
     ddup.upload()
     # assert len(all_events) == 0
+    assert all_events is not None
     assert len(all_events) == 2
 
     stack_events = all_events[0]
@@ -338,6 +339,8 @@ def test_ignore_profiler(tmp_path, ignore_profiler):
     with s:
         for _ in range(10):
             time.sleep(0.1)
+
+        assert s._worker is not None
         collector_worker_thread_id = s._worker.ident
 
     ddup.upload()
@@ -392,6 +395,8 @@ def test_ignore_profiler_gevent_task():
     with s:
         for _ in range(10):
             time.sleep(0.1)
+
+        assert s._worker is not None
         collector_worker_thread_id = s._worker.ident
 
     ddup.upload()