https://github.com/akkartik/mu/blob/master/051scenario_test.mu

     1 # tests for 'scenario' in previous layer
     2
     3 scenario first_scenario_in_mu [
     4   run [
     5     10:num <- add 2, 2
     6   ]
     7   memory-should-contain [
     8     10 <- 4
     9   ]
    10 ]
    11
    12 scenario scenario_with_comment_in_mu [
    13   run [
    14     # comment
    15     10:num <- add 2, 2
    16   ]
    17   memory-should-contain [
    18     10 <- 4
    19   ]
    20 ]
    21
    22 scenario scenario_with_multiple_comments_in_mu [
    23   run [
    24     # comment1
    25     # comment2
    26     10:num <- add 2, 2
    27   ]
    28   memory-should-contain [
    29     10 <- 4
    30   ]
    31 ]
    32
    33 scenario check_text_in_memory [
    34   run [
    35     10:num <- copy 3
    36     11:char <- copy 97  # 'a'
    37     12:char <- copy 98  # 'b'
    38     13:char <- copy 99  # 'c'
    39   ]
    40   memory-should-contain [
    41     10:array:character <- [abc]
    42   ]
    43 ]
    44
    45 scenario check_trace [
    46   run [
    47     10:num <- add 2, 2
    48   ]
    49   trace-should-contain [
    50     mem: storing 4 in location 10
    51   ]
    52 ]
    53
    54 scenario check_trace_negative [
    55   run [
    56     10:num <- add 2, 2
    57   ]
    58   trace-should-not-contain [
    59     mem: storing 3 in location 10
    60   ]
    61 ]
    62
    63 scenario check_trace_instruction [
    64   run [
    65     trace 1, [foo], [aaa]
    66   ]
    67   trace-should-contain [
    68     foo: aaa
    69   ]
    70 ]