Add session.root tests

tests/api/gef_session.py

@@ -3,14 +3,21 @@
 """
 
 
+from logging import root
 import subprocess
+import os
 from tests.utils import (
     TMPDIR,
     gdb_test_python_method,
     _target,
     GefUnitTestGeneric,
+    gdbserver_session,
+    gdb_run_cmd,
+    qemuuser_session
 )
 
+GDBSERVER_PREFERED_HOST = "localhost"
+GDBSERVER_PREFERED_PORT = 1234
 
 class GefSessionApi(GefUnitTestGeneric):
     """`gef.session` test module."""
@@ -40,3 +47,30 @@ def test_func_auxiliary_vector(self):
         self.assertTrue("'AT_PLATFORM'" in res)
         self.assertTrue("'AT_EXECFN':" in res)
         self.assertFalse("'AT_WHATEVER':" in res)
+
+    def test_root_dir(self):
+        func = "(s.st_dev, s.st_ino)"
+        res = gdb_test_python_method(func, target=_target("default"), before="s=os.stat(gef.session.root)")
+        self.assertNoException(res)
+        st_dev, st_ino = eval(res.split("\n")[-1])
+        stat_root = os.stat("/")
+        # Check that the `/` directory and the `session.root` directory are the same
+        assert (stat_root.st_dev == st_dev) and (stat_root.st_ino == st_ino)
+
+        port = GDBSERVER_PREFERED_PORT + 1
+        before = [f"gef-remote {GDBSERVER_PREFERED_HOST} {port}",
+                   "pi s = os.stat(gef.session.root)"]
+        with gdbserver_session(port=port) as _:
+            res = gdb_run_cmd(f"pi {func}", target=_target("default"), before=before)
+            self.assertNoException(res)
+            st_dev, st_ino = eval(res.split("\n")[-1])
+            assert (stat_root.st_dev == st_dev) and (stat_root.st_ino == st_ino)
+
+        port = GDBSERVER_PREFERED_PORT + 2
+        with qemuuser_session(port=port) as _:
+            target = _target("default")
+            before = [
+                f"gef-remote --qemu-user --qemu-binary {target} {GDBSERVER_PREFERED_HOST} {port}"]
+            res = gdb_run_cmd(f"pi gef.session.root", target=_target("default"), before=before)
+            self.assertNoException(res)
+            assert "/proc/1/root" in res