[lldb/test] Skip TestScriptedProcess when using system's debugserver (NFC)

Because TestScriptedProcess.py creates a skinny corefile to provides data
to the ScriptedProcess and ScriptedThread, we need to make sure that the
debugserver used is not out of tree, to ensure feature availability
between debugserver and lldb.

This also removes the `SKIP_SCRIPTED_PROCESS_LAUNCH` env variable after
each test finish running.

Signed-off-by: Med Ismail Bennani <[email protected]>

Author: medismailben

lldb/test/API/functionalities/scripted_process/TestScriptedProcess.py

@@ -51,8 +51,12 @@ def test_scripted_process_and_scripted_thread(self):
         target = self.dbg.CreateTarget(self.getBuildArtifact("a.out"))
         self.assertTrue(target, VALID_TARGET)
 
-        scripted_process_example_relpath = 'dummy_scripted_process.py'
         os.environ['SKIP_SCRIPTED_PROCESS_LAUNCH'] = '1'
+        def cleanup():
+          del os.environ["SKIP_SCRIPTED_PROCESS_LAUNCH"]
+        self.addTearDownHook(cleanup)
+
+        scripted_process_example_relpath = 'dummy_scripted_process.py'
         self.runCmd("command script import " + os.path.join(self.getSourceDir(),
                                                             scripted_process_example_relpath))
 
@@ -98,6 +102,7 @@ def create_stack_skinny_corefile(self, file):
         self.assertTrue(self.dbg.DeleteTarget(target), "Couldn't delete target")
 
     @skipUnlessDarwin
+    @skipIfOutOfTreeDebugserver
     @skipIf(archs=no_match(['x86_64']))
     def test_launch_scripted_process_stack_frames(self):
         """Test that we can launch an lldb scripted process from the command
@@ -115,8 +120,12 @@ def test_launch_scripted_process_stack_frames(self):
         error = target.SetModuleLoadAddress(main_module, 0)
         self.assertTrue(error.Success(), "Reloading main module at offset 0 failed.")
 
-        scripted_process_example_relpath = 'stack_core_scripted_process.py'
         os.environ['SKIP_SCRIPTED_PROCESS_LAUNCH'] = '1'
+        def cleanup():
+          del os.environ["SKIP_SCRIPTED_PROCESS_LAUNCH"]
+        self.addTearDownHook(cleanup)
+
+        scripted_process_example_relpath = 'stack_core_scripted_process.py'
         self.runCmd("command script import " + os.path.join(self.getSourceDir(),
                                                             scripted_process_example_relpath))