Merge pull request #31 from python-discord/testing

NsJail Tests

2 files changed, 124 insertions, 56 deletions

diff --git a/tests/test_nsjail.py b/tests/test_nsjail.py
new file mode 100644
index 0000000..bb176d9
--- /dev/null
+++ b/tests/test_nsjail.py
@@ -0,0 +1,124 @@
+import logging
+import unittest
+from textwrap import dedent
+
+from snekbox.nsjail import MEM_MAX, NsJail
+
+
+class NsJailTests(unittest.TestCase):
+    def setUp(self):
+        super().setUp()
+
+        self.nsjail = NsJail()
+        self.nsjail.DEBUG = False
+        self.logger = logging.getLogger("snekbox.nsjail")
+
+    def test_print_returns_0(self):
+        result = self.nsjail.python3("print('test')")
+        self.assertEqual(result.returncode, 0)
+        self.assertEqual(result.stdout, "test\n")
+        self.assertEqual(result.stderr, None)
+
+    def test_timeout_returns_137(self):
+        code = dedent("""
+            while True:
+                pass
+        """).strip()
+
+        with self.assertLogs(self.logger) as log:
+            result = self.nsjail.python3(code)
+
+        self.assertEqual(result.returncode, 137)
+        self.assertEqual(result.stdout, "")
+        self.assertEqual(result.stderr, None)
+        self.assertIn("run time >= time limit", "\n".join(log.output))
+
+    def test_memory_returns_137(self):
+        # Add a kilobyte just to be safe.
+        code = dedent(f"""
+            x = ' ' * {MEM_MAX + 1000}
+        """).strip()
+
+        result = self.nsjail.python3(code)
+        self.assertEqual(result.returncode, 137)
+        self.assertEqual(result.stdout, "")
+        self.assertEqual(result.stderr, None)
+
+    def test_subprocess_resource_unavailable(self):
+        code = dedent("""
+            import subprocess
+            print(subprocess.check_output('kill -9 6', shell=True).decode())
+        """).strip()
+
+        result = self.nsjail.python3(code)
+        self.assertEqual(result.returncode, 1)
+        self.assertIn("Resource temporarily unavailable", result.stdout)
+        self.assertEqual(result.stderr, None)
+
+    def test_read_only_file_system(self):
+        code = dedent("""
+            open('hello', 'w').write('world')
+        """).strip()
+
+        result = self.nsjail.python3(code)
+        self.assertEqual(result.returncode, 1)
+        self.assertIn("Read-only file system", result.stdout)
+        self.assertEqual(result.stderr, None)
+
+    def test_forkbomb_resource_unavailable(self):
+        code = dedent("""
+            import os
+            while 1:
+                os.fork()
+        """).strip()
+
+        result = self.nsjail.python3(code)
+        self.assertEqual(result.returncode, 1)
+        self.assertIn("Resource temporarily unavailable", result.stdout)
+        self.assertEqual(result.stderr, None)
+
+    def test_sigsegv_returns_139(self):  # In honour of Juan.
+        code = dedent("""
+            import ctypes
+            ctypes.string_at(0)
+        """).strip()
+
+        result = self.nsjail.python3(code)
+        self.assertEqual(result.returncode, 139)
+        self.assertEqual(result.stdout, "")
+        self.assertEqual(result.stderr, None)
+
+    def test_null_byte_value_error(self):
+        result = self.nsjail.python3("\0")
+        self.assertEqual(result.returncode, None)
+        self.assertEqual(result.stdout, "ValueError: embedded null byte")
+        self.assertEqual(result.stderr, None)
+
+    def test_log_parser(self):
+        log_lines = (
+            "[D][2019-06-22T20:07:00+0000][16] void foo::bar()():100 This is a debug message.",
+            "[I][2019-06-22T20:07:48+0000] pid=20 ([STANDALONE MODE]) "
+            "exited with status: 2, (PIDs left: 0)",
+            "[W][2019-06-22T20:06:04+0000][14] void cmdline::logParams(nsjconf_t*)():250 "
+            "Process will be UID/EUID=0 in the global user namespace, and will have user "
+            "root-level access to files",
+            "[W][2019-06-22T20:07:00+0000][16] void foo::bar()():100 This is a warning!",
+            "[E][2019-06-22T20:07:00+0000][16] bool "
+            "cmdline::setupArgv(nsjconf_t*, int, char**, int)():316 No command-line provided",
+            "[F][2019-06-22T20:07:00+0000][16] int main(int, char**)():204 "
+            "Couldn't parse cmdline options",
+            "Invalid Line"
+        )
+
+        with self.assertLogs(self.logger, logging.DEBUG) as log:
+            self.nsjail._parse_log(log_lines)
+
+        self.assertIn("DEBUG:snekbox.nsjail:This is a debug message.", log.output)
+        self.assertIn("ERROR:snekbox.nsjail:Couldn't parse cmdline options", log.output)
+        self.assertIn("ERROR:snekbox.nsjail:No command-line provided", log.output)
+        self.assertIn("WARNING:snekbox.nsjail:Failed to parse log line 'Invalid Line'", log.output)
+        self.assertIn("WARNING:snekbox.nsjail:This is a warning!", log.output)
+        self.assertIn(
+            "INFO:snekbox.nsjail:pid=20 ([STANDALONE MODE]) exited with status: 2, (PIDs left: 0)",
+            log.output
+        )
diff --git a/tests/test_snekbox.py b/tests/test_snekbox.py
deleted file mode 100644
index 46319d6..0000000
--- a/tests/test_snekbox.py
+++ /dev/null
@@ -1,56 +0,0 @@
-import unittest
-
-from snekbox.nsjail import NsJail
-
-nsjail = NsJail()
-
-
-class SnekTests(unittest.TestCase):
-    def test_nsjail(self):
-        result = nsjail.python3("print('test')")
-        self.assertEquals(result.strip(), "test")
-
-    # def test_memory_error(self):
-    #     code = ("x = "*"\n"
-    #             "while True:\n"
-    #             "    x = x * 99\n")
-    #     result = nsjail.python3(code)
-    #     self.assertEquals(result.strip(), "timed out or memory limit exceeded")
-
-    def test_timeout(self):
-        code = (
-            "x = '*'\n"
-            "while True:\n"
-            "    try:\n"
-            "        x = x * 99\n"
-            "    except:\n"
-            "        continue\n"
-        )
-
-        result = nsjail.python3(code)
-        self.assertEquals(result.strip(), "timed out or memory limit exceeded")
-
-    def test_kill(self):
-        code = ("import subprocess\n"
-                "print(subprocess.check_output('kill -9 6', shell=True).decode())")
-        result = nsjail.python3(code)
-        if "ModuleNotFoundError" in result.strip():
-            self.assertIn("ModuleNotFoundError", result.strip())
-        else:
-            self.assertIn("(PIDs left: 0)", result.strip())
-
-    def test_forkbomb(self):
-        code = ("import os\n"
-                "while 1:\n"
-                "    os.fork()")
-        result = nsjail.python3(code)
-        self.assertIn("Resource temporarily unavailable", result.strip())
-
-    def test_juan_golf(self):  # in honour of Juan
-        code = ("func = lambda: None\n"
-                "CodeType = type(func.__code__)\n"
-                "bytecode = CodeType(0,1,0,0,0,b'',(),(),(),'','',1,b'')\n"
-                "exec(bytecode)")
-
-        result = nsjail.python3(code)
-        self.assertEquals("unknown error, code: 111", result.strip())