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Update TimeRollbackPrevention unit test

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Merge from Widevine repo of http://go/wvgerrit/100110

The unit test TimeRollbackPrevention was broken for several
reasons. This CL reduces the test to its most basic functionality and
updates it to be compatible with a v16 oemcrypto.

This CL also adjusts the fake clock used by the buildbot to fake
sleeping backwards, so that the TimeRollbackPrevention test can also
be run on the buildbot.

Bug: 155773482
Bug: 79422351
Test: unit tests on buildbot, and on flame w/v16 modmock
Change-Id: I3027018b17b738281989e63ae6b0729757217d05
This commit is contained in:
Fred Gylys-Colwell
2020-05-15 14:13:20 -07:00
parent 760bf71908
commit 75575418d0
6 changed files with 240 additions and 205 deletions
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5
libwvdrmengine/oemcrypto/test/oec_session_util.cpp
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@@ -1477,7 +1477,10 @@ void Session::VerifyReport(Test_PST_Report expected,
int64_t time_first_decrypt,
int64_t time_last_decrypt) {
const int64_t now = wvcdm::Clock().GetCurrentTime();
expected.seconds_since_license_received = now - time_license_received;
expected.seconds_since_license_received =
(time_license_received > 0 && time_license_received < now)
? now - time_license_received
: 0;
expected.seconds_since_first_decrypt =
(time_first_decrypt > 0 && time_first_decrypt < now)
? now - time_first_decrypt