interest: declare default CanBePrefix setting
refs #4581
Change-Id: I82de3b13c3010242fa7999a2564d4a5442dfd14b
diff --git a/tests/integrated/default-can-be-prefix.README.md b/tests/integrated/default-can-be-prefix.README.md
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+# DefaultCanBePrefix test
+
+`default-can-be-prefix-*.cpp` verifies the effect of `Interest::setDefaultCanBePrefix`.
+They are written as integration tests because ndn-cxx unit tests are prohibited from calling `Interest::setDefaultCanBePrefix`.
+
+Manual verification steps:
+
+1. `default-can-be-prefix-unset` program should print a "CanBePrefix unset" warning to stderr.
+2. `default-can-be-prefix-0` and `default-can-be-prefix-1` test cases should not print that warning.
+