[lldb] Add tests for setting completions and enable 'settings remove' completion

llvm-svn: 369521

lldb/packages/Python/lldbsuite/test/functionalities/completion/TestCompletion.py

@@ -215,6 +215,24 @@ class CommandLineCompletionTestCase(TestBase):
             'settings replace target.ru',
             'settings replace target.run-args')
 
+    @skipIfFreeBSD  # timing out on the FreeBSD buildbot
+    def test_settings_show_term(self):
+        self.complete_from_to(
+            'settings show term-',
+            'settings show term-width')
+
+    @skipIfFreeBSD  # timing out on the FreeBSD buildbot
+    def test_settings_list_term(self):
+        self.complete_from_to(
+            'settings list term-',
+            'settings list term-width')
+
+    @skipIfFreeBSD  # timing out on the FreeBSD buildbot
+    def test_settings_remove_term(self):
+        self.complete_from_to(
+            'settings remove term-',
+            'settings remove term-width')
+
     @skipIfFreeBSD  # timing out on the FreeBSD buildbot
     def test_settings_s(self):
         """Test that 'settings s' completes to ['set', 'show']."""

lldb/source/Commands/CommandObjectSettings.cpp

@@ -613,6 +613,8 @@ public:
 
   ~CommandObjectSettingsRemove() override = default;
 
+  bool WantsCompletion() override { return true; }
+
   int HandleArgumentCompletion(
       CompletionRequest &request,
       OptionElementVector &opt_element_vector) override {