95   // Create a MetricsServiceObserver that will observe logs from |service|.  in TEST_F()
156   // Create a MetricsServiceObserver that will observe logs from |service|.  in TEST_F()
229   // Set the max log size to be 1 byte so that pretty much all logs will be  in TEST_F()
236   // Create a MetricsServiceObserver that will observe logs from |service|.  in TEST_F()
260   // Trim logs and verify that |logs_observer| is aware that the log was  in TEST_F()
270 // Verifies that MetricsServiceObserver is notified when logs are trimmed due to
271 // enough logs being stored.
276   // essentially means that the log store, when trimming logs, will only keep  in TEST_F()
278   // due to having stored enough logs.  in TEST_F()
284   // Create a MetricsServiceObserver that will observe logs from |service|.  in TEST_F()
292   // Store 3 arbitrary logs.  in TEST_F()
301   // Verify that |logs_observer| is aware of the 3 logs.  in TEST_F()
306   // Trim logs.  in TEST_F()
309   // Verify that all logs except the last one (the most recent one) have been  in TEST_F()
325 // Verifies that logs created through MetricsLogStore, which is used by UMA, are
328   // Verify that logs created through MetricsLogStore::StoreLog() will be  in TEST_F()
337     // Create a MetricsServiceObserver that will observe UMA logs from  in TEST_F()
343     // Load logs from persistent storage, which is needed to internally  in TEST_F()
344     // initialize |test_log_store|. There should be no logs loaded.  in TEST_F()
346     std::vector<std::unique_ptr<MetricsServiceObserver::Log>>* logs =  in TEST_F()  local
348     EXPECT_EQ(logs->size(), 0U);  in TEST_F()
353     ASSERT_EQ(logs->size(), 1U);  in TEST_F()
354     ASSERT_TRUE(logs->back()->type.has_value());  in TEST_F()
355     EXPECT_EQ(logs->back()->type.value(), MetricsLog::LogType::ONGOING_LOG);  in TEST_F()
359     ASSERT_EQ(logs->size(), 2U);  in TEST_F()
360     ASSERT_TRUE(logs->back()->type.has_value());  in TEST_F()
361     EXPECT_EQ(logs->back()->type.value(), MetricsLog::LogType::INDEPENDENT_LOG);  in TEST_F()
365     ASSERT_EQ(logs->size(), 3U);  in TEST_F()
366     ASSERT_TRUE(logs->back()->type.has_value());  in TEST_F()
367     EXPECT_EQ(logs->back()->type.value(),  in TEST_F()
370     // Store logs in persistent storage, in preparation for the next assertions.  in TEST_F()
376   // Verify that logs loaded from persistent storage are annotated with a type.  in TEST_F()
384     // Create a MetricsServiceObserver that will observe UMA logs from  in TEST_F()
390     // Load logs from persistent storage, which were created previously.  in TEST_F()
391     std::vector<std::unique_ptr<MetricsServiceObserver::Log>>* logs =  in TEST_F()  local
393     EXPECT_EQ(logs->size(), 0U);  in TEST_F()
396     // Verify that logs were observed by |logs_observer|, and that they were  in TEST_F()
397     // annotated with a type. There should be 3 logs. Note that the order in  in TEST_F()
398     // which the logs are loaded (stability first, then ongoing) is hardcoded in  in TEST_F()
400     // "ongoing" log (due to limitations on how logs are stored in persistent  in TEST_F()
402     ASSERT_EQ(logs->size(), 3U);  in TEST_F()
403     ASSERT_TRUE(logs->at(0)->type.has_value());  in TEST_F()
404     EXPECT_EQ(logs->at(0)->type.value(),  in TEST_F()
406     ASSERT_TRUE(logs->at(1)->type.has_value());  in TEST_F()
407     EXPECT_EQ(logs->at(1)->type.value(), MetricsLog::LogType::ONGOING_LOG);  in TEST_F()
408     ASSERT_TRUE(logs->at(2)->type.has_value());  in TEST_F()
409     EXPECT_EQ(logs->at(2)->type.value(), MetricsLog::LogType::ONGOING_LOG);  in TEST_F()
414   // Verify that when loading logs from persistent storage after setting an  in TEST_F()
415   // "alternate ongoing log store", the logs are annotated with a type.  in TEST_F()
424     // Load logs from persistent storage, which is needed to internally  in TEST_F()
425     // initialize |test_log_store|. There should be 3 logs loaded (however, we  in TEST_F()
429     // Create a MetricsServiceObserver that will observe UMA logs from  in TEST_F()
435     // Verify that |logs_observer| is not aware of any logs (since we started  in TEST_F()
436     // observing *after* logs from persistent storage were loaded).  in TEST_F()
437     std::vector<std::unique_ptr<MetricsServiceObserver::Log>>* logs =  in TEST_F()  local
439     EXPECT_EQ(logs->size(), 0U);  in TEST_F()
453     // logs from persistent storage.  in TEST_F()
457     // Verify that logs were observed by |logs_observer|, and that they were  in TEST_F()
458     // annotated with a type. There should be 2 logs. The "independent" log  in TEST_F()
459     // should have become an "ongoing" log (due to limitations on how logs are  in TEST_F()
461     ASSERT_EQ(logs->size(), 2U);  in TEST_F()
462     ASSERT_TRUE(logs->at(0)->type.has_value());  in TEST_F()
463     EXPECT_EQ(logs->at(0)->type.value(), MetricsLog::LogType::ONGOING_LOG);  in TEST_F()
464     ASSERT_TRUE(logs->at(1)->type.has_value());  in TEST_F()
465     EXPECT_EQ(logs->at(1)->type.value(), MetricsLog::LogType::ONGOING_LOG);  in TEST_F()
476 // JSON string that represents the logs that the observer is aware of.
484   // Create a MetricsServiceObserver that will observe logs from |service|.  in TEST_P()
506   // Export logs as a JSON string.  in TEST_P()
528   base::Value* logs_list_value = logs_dict.Find("logs");  in TEST_P()