build(rust): vendor googletest crate

third_party/crates/googletest-0.14.3/tests/scoped_trace_test.rs

@@ -0,0 +1,46 @@
+// Copyright 2026 Google LLC
+//
+// 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.
+
+#[cfg(test)]
+mod tests {
+    use googletest::internal::scoped_trace::get_scoped_traces;
+    use googletest::prelude::*;
+
+    #[gtest]
+    fn test_scoped_trace_non_fatal() -> googletest::Result<()> {
+        let result = {
+            scoped_trace!("First trace");
+            verify_eq!(1, 2)
+        };
+
+        verify_that!(result, err(displays_as(contains_substring("First trace"))))?;
+
+        verify_that!(result, err(displays_as(contains_substring("Google Test trace:"))))
+    }
+
+    #[gtest]
+    fn test_scoped_trace_nesting() {
+        scoped_trace!("Outer trace");
+        {
+            scoped_trace!("Inner trace");
+            let traces = get_scoped_traces();
+            assert_eq!(traces.len(), 2);
+            assert_eq!(traces[0].message, "Outer trace");
+            assert_eq!(traces[1].message, "Inner trace");
+        }
+        let traces = get_scoped_traces();
+        assert_eq!(traces.len(), 1);
+        assert_eq!(traces[0].message, "Outer trace");
+    }
+}