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
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
//! Soak tests — long-running correctness verification for trusted arithmetic.
//!
//! Run: `cargo test -p shape-vm soak_`
use super::test_utils::{eval, eval_typed_i64};
/// Expected sum of 0..n using the closed-form formula.
fn expected_sum(n: i64) -> i64 {
n * (n - 1) / 2
}
// ── Soak: trusted int arithmetic in tight loop ─────────────────────
#[test]
fn soak_trusted_int_add_100k() {
let source = r#"
let mut sum = 0
let mut i = 0
while i < 100000 {
sum = sum + i
i = i + 1
}
sum
"#;
// After Wave-E+5, the trailing int expression returns raw native i64
// bits at the top-level. Use the typed helper to decode them.
assert_eq!(
eval_typed_i64(source),
expected_sum(100_000),
"100K int addition soak failed"
);
}
#[test]
fn soak_trusted_int_mul_sub_100k() {
// Compute sum of (i * 2 - i) for i in 0..100000, which equals sum of i
let source = r#"
let mut sum = 0
let mut i = 0
while i < 100000 {
sum = sum + (i * 2 - i)
i = i + 1
}
sum
"#;
assert_eq!(
eval_typed_i64(source),
expected_sum(100_000),
"100K int mul/sub soak failed"
);
}
#[test]
fn soak_trusted_int_div_100k() {
// Sum of (i * 4 / 4) for i in 0..100000 == sum of i
let source = r#"
let mut sum = 0
let mut i = 0
while i < 100000 {
sum = sum + (i * 4 / 4)
i = i + 1
}
sum
"#;
assert_eq!(
eval_typed_i64(source),
expected_sum(100_000),
"100K int div soak failed"
);
}
// ── Soak: mixed int and float arithmetic ────────────────────────────
#[test]
fn soak_mixed_types_100k() {
// Accumulate float sum alongside int counter to verify no type confusion
let source = r#"
let mut float_sum = 0.0
let mut i = 0
while i < 100000 {
float_sum = float_sum + 1.0
i = i + 1
}
float_sum
"#;
let result = eval(source);
let f = result.as_f64().expect("expected f64 result");
assert!(
(f - 100_000.0).abs() < 0.001,
"100K mixed type soak failed: got {}",
f
);
}
#[test]
fn soak_float_arithmetic_100k() {
// Compute pi approximation using Leibniz formula (many float ops)
let source = r#"
let mut sum = 0.0
let mut sign = 1.0
let mut i = 0
while i < 100000 {
let denom = 2.0 * i + 1.0
sum = sum + sign / denom
sign = sign * -1.0
i = i + 1
}
sum * 4.0
"#;
let result = eval(source);
let pi_approx = result.as_f64().expect("expected f64 result");
// Leibniz converges slowly; after 100K terms, should be within 0.001 of pi
assert!(
(pi_approx - std::f64::consts::PI).abs() < 0.0001,
"Pi approximation soak failed: got {}",
pi_approx
);
}
// ── Soak: nested loops with all four operations ─────────────────────
#[test]
fn soak_nested_loops_10k() {
// Nested loop: sum of (i + j) for i in 0..100, j in 0..100
// = 100 * sum(0..100) + 100 * sum(0..100)
// = 2 * 100 * (100*99/2) = 2 * 100 * 4950 = 990000
let source = r#"
let mut total = 0
let mut i = 0
while i < 100 {
let mut j = 0
while j < 100 {
total = total + i + j
j = j + 1
}
i = i + 1
}
total
"#;
assert_eq!(
eval_typed_i64(source),
990_000,
"Nested loop soak failed"
);
}
// ── Soak: function calls in loop ────────────────────────────────────
#[test]
fn soak_function_call_loop_50k() {
// Call a function 50K times from a loop
let source = r#"
fn add_one(x: int) -> int {
x + 1
}
let mut sum = 0
let mut i = 0
while i < 50000 {
sum = sum + add_one(i)
i = i + 1
}
sum
"#;
let result = eval(source);
// sum of (i + 1) for i in 0..50000 = sum(0..50000) + 50000
let expected = expected_sum(50_000) + 50_000;
assert_eq!(
result.as_i64(),
Some(expected),
"Function call loop soak failed"
);
}
// ── Soak: comparison operations in tight loop ───────────────────────
#[test]
fn soak_comparison_loop_100k() {
// Count how many i < 50000 for i in 0..100000
let source = r#"
let mut count = 0
let mut i = 0
while i < 100000 {
if i < 50000 {
count = count + 1
}
i = i + 1
}
count
"#;
assert_eq!(
eval_typed_i64(source),
50_000,
"Comparison loop soak failed"
);
}