Time tests improvements (#2642)

* Remove extra functions from run_timetest.py

* Add `log.debug` of raw and aggregated statistics in run_timetest.py

* Implement storing of models locally for test_timetest.py

tests/time_tests/scripts/run_timetest.py

@@ -50,27 +50,13 @@ def run_cmd(args: list, log=None, verbose=True):
     return proc.returncode, ''.join(output)
 
 
-def read_stats(stats_path, stats: dict):
-    """Read statistics from a file and extend provided statistics"""
-    with open(stats_path, "r") as file:
-        parsed_data = yaml.safe_load(file)
-    return dict((step_name, stats.get(step_name, []) + [duration])
-                for step_name, duration in parsed_data.items())
-
-
 def aggregate_stats(stats: dict):
     """Aggregate provided statistics"""
     return {step_name: {"avg": statistics.mean(duration_list),
                         "stdev": statistics.stdev(duration_list) if len(duration_list) > 1 else 0}
             for step_name, duration_list in stats.items()}
 
 
-def write_aggregated_stats(stats_path, stats: dict):
-    """Write aggregated statistics to a file in YAML format"""
-    with open(stats_path, "w") as file:
-        yaml.safe_dump(stats, file)
-
-
 def prepare_executable_cmd(args: dict):
     """Generate common part of cmd from arguments to execute"""
     return [str(args["executable"].resolve(strict=True)),
@@ -96,10 +82,18 @@ def run_timetest(args: dict, log=None):
                       "Statistics aggregation is skipped.".format(args["executable"], retcode, msg))
             return retcode, {}
 
-        stats = read_stats(tmp_stats_path, stats)
+        # Read raw statistics
+        with open(tmp_stats_path, "r") as file:
+            raw_data = yaml.safe_load(file)
+        log.debug("Raw statistics after run of executable #{}: {}".format(run_iter, raw_data))
+
+        # Combine statistics from several runs
+        stats = dict((step_name, stats.get(step_name, []) + [duration])
+                     for step_name, duration in raw_data.items())
 
     # Aggregate results
     aggregated_stats = aggregate_stats(stats)
+    log.debug("Aggregated statistics after full run: {}".format(aggregated_stats))
 
     return 0, aggregated_stats
 
@@ -154,7 +148,8 @@ def cli_parser():
 
     if args.stats_path:
         # Save aggregated results to a file
-        write_aggregated_stats(args.stats_path, aggr_stats)
+        with open(args.stats_path, "w") as file:
+            yaml.safe_dump(aggr_stats, file)
         logging.info("Aggregated statistics saved to a file: '{}'".format(
             args.stats_path.resolve()))
     else:

tests/time_tests/test_runner/conftest.py

@@ -24,6 +24,7 @@
 import hashlib
 import shutil
 import logging
+import tempfile
 
 from test_runner.utils import upload_timetest_data, \
     DATABASE, DB_COLLECTIONS
@@ -107,6 +108,16 @@ def niter(request):
 # -------------------- CLI options --------------------
 
 
+@pytest.fixture(scope="function")
+def temp_dir(pytestconfig):
+    """Create temporary directory for test purposes.
+    It will be cleaned up after every test run.
+    """
+    temp_dir = tempfile.TemporaryDirectory()
+    yield Path(temp_dir.name)
+    temp_dir.cleanup()
+
+
 @pytest.fixture(scope="function")
 def cl_cache_dir(pytestconfig):
     """Generate directory to save OpenCL cache before test run and clean up after run.

tests/time_tests/test_runner/test_timetest.py

@@ -17,29 +17,38 @@
 from pathlib import Path
 import logging
 import os
+import shutil
 
 from scripts.run_timetest import run_timetest
 from test_runner.utils import expand_env_vars
 
 REFS_FACTOR = 1.2      # 120%
 
 
-def test_timetest(instance, executable, niter, cl_cache_dir, test_info):
+def test_timetest(instance, executable, niter, cl_cache_dir, test_info, temp_dir):
     """Parameterized test.
 
     :param instance: test instance. Should not be changed during test run
     :param executable: timetest executable to run
     :param niter: number of times to run executable
+    :param cl_cache_dir: directory to store OpenCL cache
     :param test_info: custom `test_info` field of built-in `request` pytest fixture
+    :param temp_dir: path to a temporary directory. Will be cleaned up after test run
     """
     # Prepare model to get model_path
     model_path = instance["model"].get("path")
     assert model_path, "Model path is empty"
+    model_path = Path(expand_env_vars(model_path))
+
+    # Copy model to a local temporary directory
+    model_dir = temp_dir / "model"
+    shutil.copytree(model_path.parent, model_dir)
+    model_path = model_dir / model_path.name
 
     # Run executable
     exe_args = {
         "executable": Path(executable),
-        "model": Path(expand_env_vars(model_path)),
+        "model": Path(model_path),
         "device": instance["device"]["name"],
         "niter": niter
     }