/usr/include/CppUTest/ is in libcpputest-dev 3.7.2-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/CppUTest/CommandLineArguments.h
/usr/include/CppUTest/CommandLineTestRunner.h
/usr/include/CppUTest/CppUTestConfig.h
/usr/include/CppUTest/JUnitTestOutput.h
/usr/include/CppUTest/MemoryLeakDetector.h
/usr/include/CppUTest/MemoryLeakDetectorMallocMacros.h
/usr/include/CppUTest/MemoryLeakDetectorNewMacros.h
/usr/include/CppUTest/MemoryLeakWarningPlugin.h
/usr/include/CppUTest/PlatformSpecificFunctions.h
/usr/include/CppUTest/PlatformSpecificFunctions_c.h
/usr/include/CppUTest/SimpleMutex.h
/usr/include/CppUTest/SimpleString.h
/usr/include/CppUTest/StandardCLibrary.h
/usr/include/CppUTest/TestFailure.h
/usr/include/CppUTest/TestFilter.h
/usr/include/CppUTest/TestHarness.h
/usr/include/CppUTest/TestHarness_c.h
/usr/include/CppUTest/TestMemoryAllocator.h
/usr/include/CppUTest/TestOutput.h
/usr/include/CppUTest/TestPlugin.h
/usr/include/CppUTest/TestRegistry.h
/usr/include/CppUTest/TestResult.h
/usr/include/CppUTest/TestTestingFixture.h
/usr/include/CppUTest/Utest.h
/usr/include/CppUTest/UtestMacros.h
/usr/include/CppUTestExt/CodeMemoryReportFormatter.h
/usr/include/CppUTestExt/GMock.h
/usr/include/CppUTestExt/GTest.h
/usr/include/CppUTestExt/GTestConvertor.h
/usr/include/CppUTestExt/MemoryReportAllocator.h
/usr/include/CppUTestExt/MemoryReportFormatter.h
/usr/include/CppUTestExt/MemoryReporterPlugin.h
/usr/include/CppUTestExt/MockActualCall.h
/usr/include/CppUTestExt/MockCheckedActualCall.h
/usr/include/CppUTestExt/MockCheckedExpectedCall.h
/usr/include/CppUTestExt/MockExpectedCall.h
/usr/include/CppUTestExt/MockExpectedCallsList.h
/usr/include/CppUTestExt/MockFailure.h
/usr/include/CppUTestExt/MockNamedValue.h
/usr/include/CppUTestExt/MockSupport.h
/usr/include/CppUTestExt/MockSupportPlugin.h
/usr/include/CppUTestExt/MockSupport_c.h
/usr/include/CppUTestExt/OrderedTest.h