1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
use std::path::PathBuf;
use vnf::{Joypad, Machine, MemoryPolicy};
use xixanta::opcodes::InstructionIdentifier;
#[derive(Default)]
struct Args {
file: String,
}
fn print_help() {
println!("End-to-end tests for the vnf library\n");
println!("usage: vnf-tests [OPTIONS] <tests/ directory>\n");
println!("Options:");
println!(" -h, --help\t\t\tPrint this message and quit.");
std::process::exit(0);
}
// Print the given `message` and exit(1).
fn die(message: String) -> ! {
eprintln!("error: {message}");
std::process::exit(1);
}
fn parse_arguments() -> Args {
let mut args = std::env::args();
let mut res = Args::default();
// Skip command name.
args.next();
for arg in args {
match arg.as_str() {
"-h" | "--help" => print_help(),
_ => {
if arg.starts_with('-') {
die(format!("don't know how to handle the '{arg}' flag"));
}
if !res.file.is_empty() {
die("cannot have multiple paths".to_string());
}
res.file = arg;
}
}
}
if res.file.is_empty() {
die("you have to provide a path to the tests/ directory".to_string());
}
res
}
fn run_break_mark_test(path: &String) -> Result<(), String> {
let rom = PathBuf::from(path).join("out/stack.nes");
let mut machine = Machine::from(&rom, 0x8000, MemoryPolicy::default())?;
// Get out of <start>
let _ = machine.next_iteration();
// Assert that we are at the expected location.
assert!(matches!(
machine.current_instruction.identifier,
InstructionIdentifier::Brk
));
// Before vs after running 'brk'.
assert_eq!(machine.status_register.break_mark, 0);
assert!(!machine.status_register.brk);
let _ = machine.next_iteration();
assert_eq!(machine.status_register.break_mark, 0x42);
assert!(machine.status_register.brk);
// Skip instructions we don't care about here.
for _ in 0..11 {
let _ = machine.next_iteration();
}
// Before running 'plp', everything is still as expected.
assert!(matches!(
machine.current_instruction.identifier,
InstructionIdentifier::Plp
));
assert_eq!(machine.status_register.break_mark, 0x42);
assert!(machine.status_register.brk);
// After running 'plp'.
let _ = machine.next_iteration();
assert_eq!(machine.status_register.break_mark, 0x00);
assert!(!machine.status_register.brk);
Ok(())
}
fn run_joypad_test(path: &String) -> Result<(), String> {
let rom = PathBuf::from(path).join("out/joypad.nes");
let mut machine = Machine::from(&rom, 0x8000, MemoryPolicy::default())?;
// Manually change the PC to the reset function.
let len = machine.prg_rom.len();
let high = (machine.prg_rom[len - 1] as u16) << 8;
let low = machine.prg_rom[len - 2] as u16;
machine.pc = (high + low) as usize;
// Due to the code of joypad.s, there is a repeating read algorithm. Hence,
// we can to repeat each button combination.
machine.push_inputs_to(
0,
&[
// First read.
(Joypad::BUTTON_DOWN | Joypad::BUTTON_B),
(Joypad::BUTTON_DOWN | Joypad::BUTTON_B),
// Second read.
(Joypad::BUTTON_DOWN | Joypad::BUTTON_B),
(Joypad::BUTTON_DOWN | Joypad::BUTTON_B),
],
);
machine.run_function_mode = true;
machine.until_address(0xFFFF)?;
assert_eq!(machine.ram[0x00].value, 2);
assert_eq!(machine.ram[0x01].value, 0);
assert_eq!(machine.ram[0x02].value, 1);
assert_eq!(machine.ram[0x03].value, 0);
assert_eq!(machine.ram[0x04].value, 1);
Ok(())
}
fn main() {
let args = parse_arguments();
let file = PathBuf::from(args.file.clone());
if !file.is_dir() {
die("you have to provide a path to the tests/ directory".to_string());
}
if let Err(e) = run_break_mark_test(&args.file) {
die(e)
}
if let Err(e) = run_joypad_test(&args.file) {
die(e)
}
}
|
