21223: Add a few more --file-cache RLIMIT_NOFILE tests

[arvados.git] / services / fuse / tests / test_command_args.py

diff --git a/services/fuse/tests/test_command_args.py b/services/fuse/tests/test_command_args.py
index 600bb0fe227594f15540086ae2ea3526770e4113..b08ab19335758be4c7ee4f72b91b4f3e26d04cea 100644 (file)
--- a/services/fuse/tests/test_command_args.py
+++ b/services/fuse/tests/test_command_args.py
@@ -20,6 +20,7 @@ from . import run_test_server
 import sys
 import tempfile
 import unittest
+import resource
 
 def noexit(func):
     """If argparse or arvados_fuse tries to exit, fail the test instead"""
@@ -261,6 +262,50 @@ class MountArgsTest(unittest.TestCase):
                         '--foreground', self.mntdir])
                     arvados_fuse.command.Mount(args)
 
+    @noexit
+    @mock.patch('resource.setrlimit')
+    @mock.patch('resource.getrlimit')
+    def test_default_file_cache(self, getrlimit, setrlimit):
+        args = arvados_fuse.command.ArgumentParser().parse_args([
+            '--foreground', self.mntdir])
+        self.assertEqual(args.mode, None)
+        getrlimit.return_value = (1024, 1048576)
+        self.mnt = arvados_fuse.command.Mount(args)
+        setrlimit.assert_called_with(resource.RLIMIT_NOFILE, (10240, 1048576))
+
+    @noexit
+    @mock.patch('resource.setrlimit')
+    @mock.patch('resource.getrlimit')
+    def test_small_file_cache(self, getrlimit, setrlimit):
+        args = arvados_fuse.command.ArgumentParser().parse_args([
+            '--foreground', '--file-cache=256000000', self.mntdir])
+        self.assertEqual(args.mode, None)
+        getrlimit.return_value = (1024, 1048576)
+        self.mnt = arvados_fuse.command.Mount(args)
+        setrlimit.assert_not_called()
+
+    @noexit
+    @mock.patch('resource.setrlimit')
+    @mock.patch('resource.getrlimit')
+    def test_large_file_cache(self, getrlimit, setrlimit):
+        args = arvados_fuse.command.ArgumentParser().parse_args([
+            '--foreground', '--file-cache=256000000000', self.mntdir])
+        self.assertEqual(args.mode, None)
+        getrlimit.return_value = (1024, 1048576)
+        self.mnt = arvados_fuse.command.Mount(args)
+        setrlimit.assert_called_with(resource.RLIMIT_NOFILE, (30517, 1048576))
+
+    @noexit
+    @mock.patch('resource.setrlimit')
+    @mock.patch('resource.getrlimit')
+    def test_file_cache_hard_limit(self, getrlimit, setrlimit):
+        args = arvados_fuse.command.ArgumentParser().parse_args([
+            '--foreground', '--file-cache=256000000000', self.mntdir])
+        self.assertEqual(args.mode, None)
+        getrlimit.return_value = (1024, 2048)
+        self.mnt = arvados_fuse.command.Mount(args)
+        setrlimit.assert_called_with(resource.RLIMIT_NOFILE, (2048, 2048))
+
 class MountErrorTest(unittest.TestCase):
     def setUp(self):
         self.mntdir = tempfile.mkdtemp()