        y: [],
                        },
                        testList: [{
                            testType: 'convertToLayout',
                            cases: [{
                                input: [0, 0],
                                expect: {matrixXYLocatorRange: [[NaN, NaN], [NaN, NaN]]},
                            }, {
                                input: [null, null],
                                opt: {clamp: MatrixClampOption.body},
                                expect: {matr