function pixi_core_Matrix_confirmNewMatrix(matrix) { var expect = chai.expect; expect(matrix).to.be.an.instanceof(PIXI.Matrix); expect(matrix).to.not.be.empty; expect(matrix.a).to.equal(1); expect(matrix.b).to.equal(0); expect(matrix.c).to.equal(0); expect(matrix.d).to.equal(1); expect(matrix.tx).to.equal(0); expect(matrix.ty).to.equal(0); }