What is the legal test for "general principles of law" in a criminal trial?

"'It is settled that in criminal cases, even when not requested, the court must instruct on the general principles of law relevant to the issues raised by the evidence. [Citations.] The general principles of law governing the case are those principles closely and openly connected with the evidence adduced before the court which are necessary for the jury's proper consideration of the case. [Citations.] At a minimum, it is the court's duty to ensure the jury is adequately instructed on the law governing all elements of the case submitted to it to the extent necessary for a proper determination in conformity with the applicable law. [Citation.]'" (People v. Haney (1977) 75 Cal.App.3d 308, 312

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(Haney).) "'We presume jurors "generally understand and follow instructions."' [Citation.]" (People v. Jackson (2014) 58 Cal.4th 724, 767.)