Abstract: A method of testing a change in a software code includes, searching a database of tests to identify a subset of the tests that include a function that executes the change, forming, from the subset, a multitude of groups each having a different execution path. The tests in the same group have the same execution path. The method further includes prioritizing the tests within each of the multitude of groups based on one or more testing characteristics, and selecting, from each of the groups, one or more of the prioritized tests to test the change.

Abstract: The invention discloses a continuously adjustable analog phase shifter, comprising N series-connected lumped phase shift units, with N?1, where the ith lumped phase shift unit is a high-pass lumped phase shift unit or a low-pass lumped phase shift unit, with 1?i?N. The invention adopts a lumped phase shift unit, and utilizes the advantage of small size of the lumped parametric circuit, thereby allowing the phase shifter to have a compact structure, small area, low cost and convenient integration. The lumped phase shift units in the invention may be selected as all high-pass lumped phase shift units or low-pass lumped phase shift units as appropriate, thereby having a flexible circuit structure that can meet the requirements at various operation frequencies. The lumped phase shift units in the invention may be selected to take the form of series-connected high-pass lumped phase shift unit and low-pass lumped phase shift unit, thereby permitting a wider bandwidth.

Abstract: A method of testing a change in a software code includes, searching a database of tests to identify a subset of the tests that include a function that executes the change, forming, from the subset, a multitude of groups each having a different execution path. The tests in the same group have the same execution path. The method further includes prioritizing the tests within each of the multitude of groups based on one or more testing characteristics, and selecting, from each of the groups, one or more of the prioritized tests to test the change.