C++: fixed code completion for namespace aliases

Task-number: QTCREATORBUG-166

Change-Id: I7a19065a57bfb943e5fc4e2bd9bd81988c1175e3
Reviewed-by: Sergey Shambir <sergey.shambir.auto@gmail.com>
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

1 files changed, 47 insertions, 0 deletions

diff --git a/src/plugins/cpptools/cppcompletion_test.cpp b/src/plugins/cpptools/cppcompletion_test.cpp
index 6e35e263da..67af9b9497 100644
--- a/src/plugins/cpptools/cppcompletion_test.cpp
+++ b/src/plugins/cpptools/cppcompletion_test.cpp
@@ -1751,3 +1751,50 @@ void CppToolsPlugin::test_completion_typedef_using_templates2()
     QVERIFY(completions.contains(QLatin1String("Foo")));
     QVERIFY(completions.contains(QLatin1String("bar")));
 }
+
+void CppToolsPlugin::test_completion_namespace_alias_with_many_namespace_declarations()
+{
+    TestData data;
+    data.srcText =
+            "namespace NS1\n"
+            "{\n"
+            "namespace NS2\n"
+            "{\n"
+            "struct Foo1\n"
+            "{\n"
+            "    int bar1;\n"
+            "};\n"
+            "}\n"
+            "}\n"
+            "namespace NS1\n"
+            "{\n"
+            "namespace NS2\n"
+            "{\n"
+            "struct Foo2\n"
+            "{\n"
+            "    int bar2;\n"
+            "};\n"
+            "}\n"
+            "}\n"
+            "namespace NS = NS1::NS2;\n"
+            "int main()\n"
+            "{\n"
+            "    @\n"
+            "    // padding so we get the scope right\n"
+            "}\n"
+            ;
+    setup(&data);
+
+    Utils::ChangeSet change;
+    QString txt = QLatin1String("NS::");
+    change.insert(data.pos, txt);
+    QTextCursor cursor(data.doc);
+    change.apply(&cursor);
+    data.pos += txt.length();
+
+    QStringList completions = getCompletions(data);
+
+    QCOMPARE(completions.size(), 2);
+    QVERIFY(completions.contains(QLatin1String("Foo1")));
+    QVERIFY(completions.contains(QLatin1String("Foo2")));
+}