From cfff46ff9becdbe5cf48816870e625ed253ecc57 Mon Sep 17 00:00:00 2001
From: drebs <drebs@riseup.net>
Date: Sun, 17 Sep 2017 12:08:25 -0300
Subject: [refactor] move tests to root of repository

Tests entrypoint was in a testing/ subfolder in the root of the
repository. This was made mainly because we had some common files for
tests and we didn't want to ship them (files in testing/test_soledad,
which is itself a python package. This sometimes causes errors when
loading tests (it seems setuptools is confused with having one python
package in a subdirectory of another).

This commit moves the tests entrypoint to the root of the repository.

Closes: #8952
---
 tests/benchmarks/conftest.py | 154 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 154 insertions(+)
 create mode 100644 tests/benchmarks/conftest.py

(limited to 'tests/benchmarks/conftest.py')

diff --git a/tests/benchmarks/conftest.py b/tests/benchmarks/conftest.py
new file mode 100644
index 00000000..80eccb08
--- /dev/null
+++ b/tests/benchmarks/conftest.py
@@ -0,0 +1,154 @@
+import functools
+import numpy
+import os
+import psutil
+import pytest
+import threading
+import time
+
+from twisted.internet import threads, reactor
+
+
+#
+# pytest customizations
+#
+
+# mark benchmark tests using their group names (thanks ionelmc! :)
+def pytest_collection_modifyitems(items, config):
+    for item in items:
+        bench = item.get_marker("benchmark")
+        if bench and bench.kwargs.get('group'):
+            group = bench.kwargs['group']
+            marker = getattr(pytest.mark, 'benchmark_' + group)
+            item.add_marker(marker)
+
+    subdir = config.getoption('subdir')
+    if subdir == 'benchmarks':
+        # we have to manually setup the events server in order to be able to
+        # signal events. This is usually done by the enclosing application
+        # using soledad client (i.e. bitmask client).
+        from leap.common.events import server
+        server.ensure_server()
+
+
+#
+# benchmark fixtures
+#
+
+@pytest.fixture()
+def txbenchmark(monitored_benchmark):
+    def blockOnThread(*args, **kwargs):
+        return threads.deferToThread(
+            monitored_benchmark, threads.blockingCallFromThread,
+            reactor, *args, **kwargs)
+    return blockOnThread
+
+
+@pytest.fixture()
+def txbenchmark_with_setup(monitored_benchmark_with_setup):
+    def blockOnThreadWithSetup(setup, f, *args, **kwargs):
+        def blocking_runner(*args, **kwargs):
+            return threads.blockingCallFromThread(reactor, f, *args, **kwargs)
+
+        def blocking_setup():
+            args = threads.blockingCallFromThread(reactor, setup)
+            try:
+                return tuple(arg for arg in args), {}
+            except TypeError:
+                    return ((args,), {}) if args else None
+
+        def bench():
+            return monitored_benchmark_with_setup(
+                blocking_runner, setup=blocking_setup,
+                rounds=4, warmup_rounds=1, iterations=1,
+                args=args, kwargs=kwargs)
+        return threads.deferToThread(bench)
+    return blockOnThreadWithSetup
+
+
+#
+# resource monitoring
+#
+
+class ResourceWatcher(threading.Thread):
+
+    sampling_interval = 0.1
+
+    def __init__(self, watch_memory):
+        threading.Thread.__init__(self)
+        self.process = psutil.Process(os.getpid())
+        self.running = False
+        # monitored resources
+        self.cpu_percent = None
+        self.watch_memory = watch_memory
+        self.memory_samples = []
+        self.memory_percent = None
+
+    def run(self):
+        self.running = True
+        self.process.cpu_percent()
+        # decide how long to sleep based on need to sample memory
+        sleep = self.sampling_interval if not self.watch_memory else 1
+        while self.running:
+            if self.watch_memory:
+                sample = self.process.memory_percent(memtype='rss')
+                self.memory_samples.append(sample)
+            time.sleep(sleep)
+
+    def stop(self):
+        self.running = False
+        self.join()
+        # save cpu usage info
+        self.cpu_percent = self.process.cpu_percent()
+        # save memory usage info
+        if self.watch_memory:
+            memory_percent = {
+                'sampling_interval': self.sampling_interval,
+                'samples': self.memory_samples,
+                'stats': {},
+            }
+            for stat in 'max', 'min', 'mean', 'std':
+                fun = getattr(numpy, stat)
+                memory_percent['stats'][stat] = fun(self.memory_samples)
+            self.memory_percent = memory_percent
+
+
+def _monitored_benchmark(benchmark_fixture, benchmark_function, request,
+                         *args, **kwargs):
+    # setup resource monitoring
+    watch_memory = _watch_memory(request)
+    watcher = ResourceWatcher(watch_memory)
+    watcher.start()
+    # run benchmarking function
+    benchmark_function(*args, **kwargs)
+    # store results
+    watcher.stop()
+    benchmark_fixture.extra_info.update({
+        'cpu_percent': watcher.cpu_percent
+    })
+    if watch_memory:
+        benchmark_fixture.extra_info.update({
+            'memory_percent': watcher.memory_percent,
+        })
+    # add docstring info
+    if request.scope == 'function':
+        fun = request.function
+        doc = fun.__doc__ or ''
+        benchmark_fixture.extra_info.update({'doc': doc.strip()})
+
+
+def _watch_memory(request):
+    return request.config.getoption('--watch-memory')
+
+
+@pytest.fixture
+def monitored_benchmark(benchmark, request):
+    return functools.partial(
+        _monitored_benchmark, benchmark, benchmark, request)
+
+
+@pytest.fixture
+def monitored_benchmark_with_setup(benchmark, request, *args, **kwargs):
+    return functools.partial(
+        _monitored_benchmark, benchmark, benchmark.pedantic, request,
+        *args, **kwargs)
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