return {
    {
        name = "VM: basic",
        code = [[
            .func 0
                pushi   2
                pushi   3
                sum
                ret
        ]],
        expected_stack_size = 1,
        expected_stack_top = 5,
    },
    {
        name = "VM: integer expressions",
        template = [[
            .func 0
                pushi   %d
                pushi   %d
                %s
                ret
        ]],
        scenarios = {
            { parameters = {  2, 5, 'sum' },  name = "Sum", expected_stack_top = 7 },
            { parameters = {  2, 5, 'sub' },  name = "Subtraction", expected_stack_top = -3 },
            { parameters = {  2, 5, 'mul' },  name = "Multiplication", expected_stack_top = 10 },
            { parameters = { 20, 3, 'idiv' }, name = "Integer division", expected_stack_top = 6 },
            { parameters = {  5, 5, 'eq' },   name = "Equality", expected_stack_top = 1 },
            { parameters = {  5, 5, 'neq' },  name = "Inequality", expected_stack_top = 0 },
            { parameters = {  4, 5, 'lt' },   name = "Less than", expected_stack_top = 1 },
            { parameters = {  5, 5, 'lt' },   name = "Less than", expected_stack_top = 0 },
            { parameters = {  4, 5, 'lte' },  name = "Less than or equal", expected_stack_top = 1 },
            { parameters = {  5, 5, 'lte' },  name = "Less than or equal", expected_stack_top = 1 },
            { parameters = {  5, 5, 'gt' },   name = "Greater than", expected_stack_top = 0 },
            { parameters = {  5, 5, 'gte' },  name = "Greater than or equal", expected_stack_top = 1 },
            { parameters = { 20, 5, 'and' },  name = "Logical AND", expected_stack_top = 4 },
            { parameters = { 20, 5, 'or' },   name = "Logical OR", expected_stack_top = 21 },
            { parameters = { 20, 5, 'xor' },  name = "Logical XOR", expected_stack_top = 17 },
            { parameters = {  2, 5, 'pow' },  name = "Power", expected_stack_top = 32 },
            { parameters = {  2, 5, 'shl' },  name = "Shift left", expected_stack_top = 64 },
            { parameters = { 20, 3, 'shr' },  name = "Shift right", expected_stack_top = 2},
            { parameters = { 20, 3, 'mod' },  name = "Modulo", expected_stack_top = 2 },
        },
    },
    {
        name = "VM: local variables",
        code = [[
            .func 0
                pushv 2         ; local a, b
                pushi 3         ; a = 3
                set   0
                pushi 4         ; b = 4
                set   1
                dupv  0         ; return a
                ret
        ]],
        expected_stack_size = 1,
        expected_stack_top = 3,
    },
    {
        name = "VM: functions",
        code = [[
            .func 0
                pushf   1
                pushi   2
                pushi   3
                call    2
                ret
            .func 1
                dupv    0
                dupv    1
                sub
                ret
        ]],
        expected_stack_size = 1,
        expected_stack_top = -1,
    },
    {
        name = "VM: jumps (jmp + bnz)",
        code = [[
            .func 0
                jmp     @x1         ; 0
                pushi   5           ; 3
            @x1:
                pushi   1           ; 5
                bnz     @x2         ; 7
                pushi   1           ; 10
                bz      @x3         ; 12
            @x2:
                pushi   6           ; 15
                ret                 ; 17
            @x3:
                pushi   7           ; 18
                ret                 ; 20
        ]],
        --debug_bytecode = true,
        --decompile = true,
        --debug = true,
        expected_stack_top = 6,
    },
    {
        name = "VM: jumps (bz)",
        code = [[
        .func 0
            jmp     @x1
            pushi   5
        @x1:
            pushi   0
            bnz     @x2
            pushi   0
            bz      @x3
        @x2:
            pushi   6
            ret
        @x3:
            pushi   7
            ret
        ]],
        expected_stack_top = 7,
    },
    {
        name = "VM: string from const",
        code = [[
            .const
                0: "Hello"
            .func 0
                pushc   0
                ret
        ]],
        expected_stack_top = "Hello"
    }
}