Adding CTS test for the new keyguard secondary lockscreen DPM API.
As this API is restricted to only DO/POs who are also the configured supervision component, this restriction cannot be satisfied within the constraints of a CTS test, so CTS coverage is limited to ensuring the expected SecurityException is thrown. Functionality will be covered in GTS instead.
Bug: 150866056
Bug: 155120891
Test: atest -c 'CtsDevicePolicyManagerTestCases:com.android.cts.devicepolicy.MixedProfileOwnerTest'
Change-Id: Ib1f4ca6920a13be3236989226d3c557be81dbb47
2 files changed
