FindEmptyDirectoryUsageOnTmpfs finds the expected usage of an empty directory existing on a tmpfs filesystem on this system.

GetTestVolumePluginMgr creates, initializes, and returns a test volume plugin manager and fake volume plugin using a fake volume host.

VerifyAttachCallCount ensures that at least one of the Attachers for this plugin has the expectedAttachCallCount number of calls.

VerifyDetachCallCount ensures that at least one of the Attachers for this plugin has the expectedDetachCallCount number of calls.

VerifyMountDeviceCallCount ensures that at least one of the Mounters for this plugin has the expectedMountDeviceCallCount number of calls.

VerifySetUpCallCount ensures that at least one of the Mounters for this plugin has the expectedSetUpCallCount number of calls.

VerifyTearDownCallCount ensures that at least one of the Unounters for this plugin has the expectedTearDownCallCount number of calls.

VerifyWaitForAttachCallCount ensures that at least one of the Mounters for this plugin has the expectedWaitForAttachCallCount number of calls.

VerifyZeroAttachCalls ensures that all of the Attachers for this plugin have a zero AttachCallCount.

VerifyZeroDetachCallCount ensures that all Detachers for this plugin have a zero DetachCallCount.

VerifyZeroMountDeviceCallCount ensures that all Attachers for this plugin have a zero MountDeviceCallCount.

VerifyZeroSetUpCallCount ensures that all Mounters for this plugin have a zero SetUpCallCount.

VerifyZeroTearDownCallCount ensures that all Mounters for this plugin have a zero TearDownCallCount.

VerifyZeroWaitForAttachCallCount ensures that all Attachers for this plugin have a zero WaitForAttachCallCount.

FakeVolumePlugin is useful for testing.