Fix testing tests command to allow passing test as extra arg

When providers have been moved in apache#42505 broke passing parameters
when provider tests were passed as extra args of "testing tests"
command of breeze.

Previously all tests were under "tests" folder and there was
an exclusion to disable "All" tests when any test was passed as
parameter. But after moving tests to "providers" this stopped working.

Additional exclusion needs to be added for "providers/tests" and
"providers/tests_sdk/".

This PR also adds autocompletion for tests passed this way by
setting the click type to Path for the extra args (but without
the need for the Path to exist).

Also during this check it turned out that "All" tests are not
working in the intended way - but this should not impact our CI
only local runs.

Appropriate comment has been added and it's captured in
apache#42632

dev/breeze/doc/images/output_testing_tests.txt

@@ -1 +1 @@
-4e128855ff2df624e0fc59e229b0973d
+69c5e660ec3f263dad58cc7a7710d4ed

dev/breeze/src/airflow_breeze/commands/testing_commands.py

@@ -553,7 +553,7 @@ def _verify_parallelism_parameters(
 @option_use_packages_from_dist
 @option_use_xdist
 @option_verbose
-@click.argument("extra_pytest_args", nargs=-1, type=click.UNPROCESSED)
+@click.argument("extra_pytest_args", nargs=-1, type=click.Path(path_type=str))
 def command_for_tests(**kwargs):
     _run_test_command(**kwargs)
 
@@ -877,8 +877,16 @@ def _run_test_command(
         )
     else:
         if shell_params.test_type == "Default":
-            if any([arg.startswith("tests") for arg in extra_pytest_args]):
+            if any(
+                [
+                    arg.startswith("tests/")
+                    or arg.startswith("providers/tests/")
+                    or arg.startswith("task_sdk/tests/")
+                    for arg in extra_pytest_args
+                ]
+            ):
                 # in case some tests are specified as parameters, do not pass "tests" as default
+                # test_type = "All" as default and it will run all "tests" by default then
                 shell_params.test_type = "None"
                 shell_params.parallel_test_types_list = []
             else:

dev/breeze/src/airflow_breeze/utils/run_tests.py

@@ -212,6 +212,12 @@ def find_all_other_tests() -> list[str]:
 PROVIDERS_LIST_EXCLUDE_PREFIX = "Providers[-"
 
 ALL_TEST_SUITES: dict[str, tuple[str, ...]] = {
+    # TODO: This is not really correct now - we should allow to run both providers and airflow
+    # as "ALL" tests - currently it is not possible due to conftest.py present at top-level of
+    # all different test suites ("tests", "providers/tests", "task_sdk/tests")
+    # The only reason it is working now in CI is because we run tests in parallel (both DB and non-DB)
+    # each test subfolder is separately specified in the pytest command line
+    # This should be solved as part of https://github.com/apache/airflow/issues/42632
     "All": ("tests",),
     "All-Long": ("tests", "-m", "long_running", "--include-long-running"),
     "All-Quarantined": ("tests", "-m", "quarantined", "--include-quarantined"),