Add utility function for prefixing each line of a string

... and thus allowing proper quoting of command output.

1 files changed, 26 insertions, 0 deletions

diff --git a/test/utils/cpp/prefix.test.cpp b/test/utils/cpp/prefix.test.cpp
new file mode 100644
index 00000000..3dd092eb
--- /dev/null
+++ b/test/utils/cpp/prefix.test.cpp
@@ -0,0 +1,26 @@
+// Copyright 2024 Huawei Cloud Computing Technology Co., Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <filesystem>
+
+#include "catch2/catch_test_macros.hpp"
+#include "src/utils/cpp/prefix.hpp"
+
+TEST_CASE("lines", "[prefix]") {
+    CHECK(PrefixLines("").empty());
+    CHECK(PrefixLines("foo\nbar\n") == "  foo\n  bar\n");
+    CHECK(PrefixLines("foo\nbar\n", ">") == ">foo\n>bar\n");
+    CHECK(PrefixLines("foo") == "  foo\n");
+    CHECK(PrefixLines("foo\nbar") == "  foo\n  bar\n");
+}