There's a section in the test that waits up to 10 seconds for a string to be deduplicated and then does a final verification that the string was correctly deduplicated. However, the initial waiting gets passed the wrong comparison string, which has the effect that this test always waits for 10 seconds before proceeding.

The problem is here:
            if (!waitForDeduplication(dupString3, baseString)) {
                if (getValue(dupString3) != getValue(internedString)) {

where the first line should say:
            if (!waitForDeduplication(dupString3, internedString)) {