Add code coverage support. (#378)

src/ftxui/component/terminal_input_parser_test.cpp

@@ -9,7 +9,7 @@
 #include "ftxui/component/terminal_input_parser.hpp"
 #include "gtest/gtest_pred_impl.h"  // for AssertionResult, Test, EXPECT_EQ, EXPECT_TRUE, EXPECT_FALSE, TEST
 
-using namespace ftxui;
+namespace ftxui {
 
 // Test char |c| to are trivially converted into |Event::Character(c)|.
 TEST(Event, Character) {
@@ -232,6 +232,8 @@ TEST(Event, UTF8) {
   }
 }
 
+}  // namespace ftxui
+
 // Copyright 2020 Arthur Sonzogni. All rights reserved.
 // Use of this source code is governed by the MIT license that can be found in
 // the LICENSE file.