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Update fallback policy for fast fallback. am: 28b45c4f1b am: 596363ef9e

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Original change: https://googleplex-android-review.googlesource.com/c/platform/vendor/widevine/+/16096533

Change-Id: Ifd8e70f097345d9d17f2c96e7bdd0415fea62ca5
This commit is contained in:
Alex Dale
2021-10-28 17:18:20 +00:00
committed by Automerger Merge Worker
parent ec631db9a0 596363ef9e
commit 08e7383ad4
4 changed files with 153 additions and 11 deletions
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105
libwvdrmengine/cdm/core/test/okp_fallback_policy_test.cpp
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@@ -368,5 +368,110 @@ TEST_F(OkpFallbackPolicyTest, Restore_NeedsProvisioningAgain) {
EXPECT_FALSE(system_policy_->IsInFallbackMode());
EXPECT_EQ(system_policy_->info().first_checked_time(), kRestoreTime);
}
// Setup:
// 1) Device needs OKP
// 2) App requests using fast backoff settings.
// 3) Fallback occurs
// 4) After the fast fallback duration, check for if in fallback
// Expectation:
// Policy should indicate fallback, duration should be "fast" and
// the info is updated.
// After the fast fallback duration has passed, the system should
// leave fallback state.
TEST_F(OkpFallbackPolicyTest, FastRules) {
system_policy_->SetFastBackoffDurationRules();
constexpr int64_t kFallbackTime = kInitialTime + 10;
clock_.SetTime(kFallbackTime);
system_policy_->TriggerFallback();
// Checks.
EXPECT_FALSE(system_policy_->IsProvisioned());
EXPECT_TRUE(system_policy_->IsInFallbackMode());
EXPECT_EQ(system_policy_->info().backoff_start_time(), kFallbackTime);
EXPECT_EQ(system_policy_->info().backoff_duration(), kFastBackoffDuration);
constexpr int64_t kPostFallbackTime =
kFallbackTime + kFastBackoffDuration + 5;
clock_.SetTime(kPostFallbackTime);
// Checks.
EXPECT_FALSE(system_policy_->IsProvisioned());
EXPECT_FALSE(system_policy_->IsInFallbackMode());
}
// Setup:
// 1) Device needs OKP
// 2) Fallback occurs
// 3) App requests using fast backoff settings.
// 4) Another fallback occurs
// Expectation:
// 1) Setting rules to fast should end fallback
// 2) Second fallback should have a short duration.
TEST_F(OkpFallbackPolicyTest, FastRules_AfterFallback) {
// First fallback.
constexpr int64_t kFirstFallbackTime = kInitialTime + 10;
clock_.SetTime(kFirstFallbackTime);
system_policy_->TriggerFallback();
EXPECT_TRUE(system_policy_->IsInFallbackMode());
// Set fast fallback.
system_policy_->SetFastBackoffDurationRules();
EXPECT_FALSE(system_policy_->IsInFallbackMode());
// Second fallaback.
constexpr int64_t kSecondFallbackTime = kFirstFallbackTime + 10;
clock_.SetTime(kSecondFallbackTime);
system_policy_->TriggerFallback();
EXPECT_TRUE(system_policy_->IsInFallbackMode());
// Checks.
EXPECT_FALSE(system_policy_->IsProvisioned());
EXPECT_TRUE(system_policy_->IsInFallbackMode());
EXPECT_EQ(system_policy_->info().backoff_start_time(), kSecondFallbackTime);
EXPECT_EQ(system_policy_->info().backoff_duration(), kFastBackoffDuration);
}
// Setup:
// 1) Device needs OKP
// 2) App requests using fast backoff settings.
// 3) Fallback occurs
// 4) After the fast fallback duration, check for if in fallback
// 5) Another fallback occurs
// 6) After the fast fallback duration, check for if in fallback
// Expectation:
// There should not be any exponential backoff, similar to FastRules
// in all other ways.
TEST_F(OkpFallbackPolicyTest, FastRules_FallbackTwice) {
system_policy_->SetFastBackoffDurationRules();
constexpr int64_t kFirstFallbackTime = kInitialTime + 10;
clock_.SetTime(kFirstFallbackTime);
system_policy_->TriggerFallback();
// Checks.
EXPECT_FALSE(system_policy_->IsProvisioned());
EXPECT_TRUE(system_policy_->IsInFallbackMode());
EXPECT_EQ(system_policy_->info().backoff_start_time(), kFirstFallbackTime);
EXPECT_EQ(system_policy_->info().backoff_duration(), kFastBackoffDuration);
constexpr int64_t kPostFirstFallbackTime =
kFirstFallbackTime + kFastBackoffDuration + 5;
clock_.SetTime(kPostFirstFallbackTime);
EXPECT_FALSE(system_policy_->IsProvisioned());
EXPECT_FALSE(system_policy_->IsInFallbackMode());
constexpr int64_t kSecondFallbackTime = kPostFirstFallbackTime + 10;
clock_.SetTime(kSecondFallbackTime);
system_policy_->TriggerFallback();
// Checks.
EXPECT_FALSE(system_policy_->IsProvisioned());
EXPECT_TRUE(system_policy_->IsInFallbackMode());
EXPECT_EQ(system_policy_->info().backoff_start_time(), kSecondFallbackTime);
EXPECT_EQ(system_policy_->info().backoff_duration(), kFastBackoffDuration);
constexpr int64_t kPostSecondFallbackTime =
kSecondFallbackTime + kFastBackoffDuration + 5;
clock_.SetTime(kPostSecondFallbackTime);
EXPECT_FALSE(system_policy_->IsProvisioned());
EXPECT_FALSE(system_policy_->IsInFallbackMode());
}
} // namespace okp
} // namespace wvcdm