fix: fix various typos throughout the codebase

CHANGELOG.md

@@ -165,7 +165,7 @@
 
 ### Documentation
 
-* Update the a2a exmaple link in README.md [d0fdfb8](https://github.com/google/adk-python/commit/d0fdfb8c8e2e32801999c81de8d8ed0be3f88e76)
+* Update the a2a example link in README.md [d0fdfb8](https://github.com/google/adk-python/commit/d0fdfb8c8e2e32801999c81de8d8ed0be3f88e76)
 * Adds AGENTS.md to provide relevant project context for the Gemini CLI [37108be](https://github.com/google/adk-python/commit/37108be8557e011f321de76683835448213f8515)
 * Update CONTRIBUTING.md [ffa9b36](https://github.com/google/adk-python/commit/ffa9b361db615ae365ba62c09a8f4226fb761551)
 * Add adk project overview and architecture [28d0ea8](https://github.com/google/adk-python/commit/28d0ea876f2f8de952f1eccbc788e98e39f50cf5)

CONTRIBUTING.md

@@ -50,7 +50,7 @@ This project follows
 ## Requirement for PRs
 
 - Each PR should only have one commit. Please squash it if there are multiple PRs.
-- All PRs, other than small documentation or typo fixes, should have a Issue assoicated. If not, please create one.
+- All PRs, other than small documentation or typo fixes, should have a Issue associated. If not, please create one.
 - Small, focused PRs. Keep changes minimal—one concern per PR.
 - For bug fixes or features, please provide logs or screenshot after the fix is applied to help reviewers better understand the fix.
 - Please include a `testing plan` section in your PR to talk about how you will test. This will save time for PR review. See `Testing Requirements` section for more details.

src/google/adk/evaluation/agent_evaluator.py

@@ -559,7 +559,7 @@ async def _get_eval_results_by_eval_id(
   def _get_eval_metric_results_with_invocation(
       eval_results_per_eval_id: list[EvalCaseResult],
   ) -> dict[str, list[_EvalMetricResultWithInvocation]]:
-    """Retruns _EvalMetricResultWithInvocation grouped by metric.
+    """Returns _EvalMetricResultWithInvocation grouped by metric.
 
     EvalCaseResult contain results for each metric per invocation.
 

src/google/adk/tools/function_tool.py

@@ -107,7 +107,7 @@ async def run_async(
 
     # Functions are callable objects, but not all callable objects are functions
     # checking coroutine function is not enough. We also need to check whether
-    # Callable's __call__ function is a coroutine funciton
+    # Callable's __call__ function is a coroutine function
     if (
         inspect.iscoroutinefunction(self.func)
         or hasattr(self.func, '__call__')

tests/unittests/tools/test_build_function_declaration.py

@@ -360,7 +360,7 @@ def function_string_return(param: str) -> str:
   assert function_decl.response.type == types.Type.STRING
 
 
-def test_fucntion_with_no_response_annotations():
+def test_function_with_no_response_annotations():
   """Test a function that has no response annotations."""
 
   def transfer_to_agent(agent_name: str, tool_context: ToolContext):

tests/unittests/tools/test_function_tool.py

@@ -273,7 +273,7 @@ async def test_run_async_missing_all_arg_async_func():
 
 @pytest.mark.asyncio
 async def test_run_async_with_optional_args_not_set_sync_func():
-  """Test that run_async calls the function for sync funciton with optional args not set."""
+  """Test that run_async calls the function for sync function with optional args not set."""
 
   def func_with_optional_args(arg1, arg2=None, *, arg3, arg4=None, **kwargs):
     return f"{arg1},{arg3}"
@@ -286,7 +286,7 @@ def func_with_optional_args(arg1, arg2=None, *, arg3, arg4=None, **kwargs):
 
 @pytest.mark.asyncio
 async def test_run_async_with_optional_args_not_set_async_func():
-  """Test that run_async calls the function for async funciton with optional args not set."""
+  """Test that run_async calls the function for async function with optional args not set."""
 
   async def async_func_with_optional_args(
       arg1, arg2=None, *, arg3, arg4=None, **kwargs