[lldb] Fix and test completion for ambiguous long options

The refactoring patch for the option completion broke the completion
for ambiguous long options. As this feature was also untested (as
testing ambiguous options with the current test methods is impossible),
I just noticed now. This patch restores the old behavior and adds a
test for this feature.

llvm-svn: 370185

1 files changed, 7 insertions, 0 deletions

diff --git a/lldb/packages/Python/lldbsuite/test/functionalities/completion/TestCompletion.py b/lldb/packages/Python/lldbsuite/test/functionalities/completion/TestCompletion.py
index 2df341e572d..969a7b543e0 100644
--- a/lldb/packages/Python/lldbsuite/test/functionalities/completion/TestCompletion.py
+++ b/lldb/packages/Python/lldbsuite/test/functionalities/completion/TestCompletion.py
@@ -91,6 +91,13 @@ class CommandLineCompletionTestCase(TestBase):
                                'arm64'])
 
     @skipIfFreeBSD  # timing out on the FreeBSD buildbot
+    def test_ambiguous_long_opt(self):
+        self.completions_match('breakpoint modify --th',
+                               ['--thread-id',
+                                '--thread-index',
+                                '--thread-name'])
+
+    @skipIfFreeBSD  # timing out on the FreeBSD buildbot
     def test_plugin_load(self):
         self.complete_from_to('plugin load ', [])