def test_sparse_block_diag():
    x = _sparse_block_diag([sparse.eye(2, 2), sparse.eye(2, 2)])
    x = x - sparse.eye(4, 4)
    x.eliminate_zeros()
    assert_equal(len(x.data), 0)
JRPC test: services.leop.getMessages
dataset/ETHPy150Open mne-tools/mne-python/mne/tests/test_fixes.py/test_sparse_block_diag--crossover with--dataset/ETHPy150Open satnet-project/server/services/leop/tests/test_jrpc.py/TestLaunchViews._test_get_messages