ECHO: "Testing vector dot product: 14"
ECHO: "  Bounds check: undef"
ECHO: "Testing matrix * vector: [3, 2, 13]"
ECHO: "  Bounds check: undef"
ECHO: "Testing vector * matrix: [9, 8]"
ECHO: "  Bounds check: undef"
ECHO: "Testing id matrix * id matrix: [[1, 0], [0, 1]]"
ECHO: "Testing asymmetric matrix * matrix: [[2, 1], [-1, 0]]"
ECHO: "Testing alternate asymmetric matrix * matrix: [[1, 0, 1], [0, 1, -1], [1, 1, 0]]"
ECHO: "  Bounds check: undef"
ECHO: "Testing matrix * matrix with undef elements: undef"
