AssertNotNil forces a panic if the specified value is nil (either a nil interface value, or a nil pointer).

DataSourceThatIsAlwaysInitialized returns a test component factory that produces a data source that immediately reports success on startup, although it does not provide any data.

DataSourceThatNeverInitializes returns a test component factory that produces a data source that immediately starts up in a failed state and does not provide any data.

ExpectBigSegmentStoreStatus waits for a status value to appear in a channel and also verifies that it matches the status currently being reported by the status provider.

MakeMockDataSet constructs a data set to be passed to a data store's Init method.

MakeSerializedMockDataSet constructs a data set to be passed to a persistent data store's Init method.

NewCapturingDataStore creates an instance of CapturingDataStore.

NewMockDatabaseInstance creates an instance of MockDatabaseInstance.

NewMockDataSourceUpdates creates an instance of MockDataSourceUpdates.

NewMockPersistentDataStore creates a test implementation of a persistent data store.

NewMockPersistentDataStoreWithPrefix creates a test implementation of a persistent data store that uses a MockDatabaseInstance to simulate a shared database.

NewPollingRequester constructs a Requester.

MockData is an instance of ld.StoreDataKind corresponding to MockDataItem.

MockOtherData is an instance of ld.StoreDataKind corresponding to another flavor of MockDataItem.

CapturingDataStore is a DataStore implementation that records update operations for testing.

CapturingEventProcessor is a test implementation of EventProcessor that accumulates all events.

ComponentConfigurerThatCapturesClientContext is a test decorator for a ComponentConfigurer that allows tests to see the ClientContext that was passed to it.

ComponentConfigurerThatReturnsError is a test implementation of ComponentConfigurer that always returns an error.

DataSourceFactoryWithData is a test implementation of ComponentConfigurer that will cause the data source to provide a specific set of data when it starts.

MockBigSegmentStore is a minimal mock implementation of BigSegmentStore.

MockDatabaseInstance can be used with MockPersistentDataStore to simulate multiple data store instances sharing the same underlying data space.

MockDataItem is a test replacement for FeatureFlag/Segment.

MockDataSourceUpdates is a mock implementation of DataSourceUpdates for testing data sources.

MockPersistentDataStore is a test implementation of PersistentDataStore.

RequestAllResponse is used to inject custom responses into the Requester, which will subsequently return them to the object under test.

Requester is a mock used in polling_data_source_test.go, to satisfy the datasource.Requester interface (used by PollingProcessor).

SingleComponentConfigurer is a test implementation of ComponentConfigurer that always returns the same pre-existing instance.

UpsertParams holds the parameters of an Upsert operation captured by CapturingDataStore.