reifydb_value/config/
usize.rs

1// SPDX-License-Identifier: Apache-2.0
2// Copyright (c) 2026 ReifyDB
3
4use super::Config;
5
6impl Config {
7	pub fn usize(&self, key: &str) -> Option<usize> {
8		self.opt_coerce(key)
9	}
10
11	pub fn require_usize(&self, key: &str) -> usize {
12		self.opt_coerce(key).unwrap_or_else(|| self.missing(key, "an unsigned integer"))
13	}
14
15	pub fn usize_or(&self, key: &str, default: usize) -> usize {
16		self.opt_coerce(key).unwrap_or(default)
17	}
18}
19
20#[cfg(test)]
21mod tests {
22	use super::super::testutil::config;
23	use crate::value::Value;
24
25	#[test]
26	fn casts_integer_widths_that_fit() {
27		let cfg = config(vec![("a", Value::Uint2(2)), ("b", Value::Uint8(120)), ("c", Value::Int4(7))]);
28		assert_eq!(cfg.usize("a"), Some(2));
29		assert_eq!(cfg.usize("b"), Some(120));
30		assert_eq!(cfg.usize("c"), Some(7), "non-negative signed coerces to usize");
31	}
32
33	#[test]
34	fn rejects_negative_and_mistyped() {
35		let cfg = config(vec![("neg", Value::Int4(-3)), ("b", Value::Boolean(false))]);
36		assert_eq!(cfg.usize("neg"), None, "negative does not coerce to unsigned");
37		assert_eq!(cfg.usize("b"), None, "boolean is not an integer");
38	}
39
40	#[test]
41	fn or_and_require_behavior() {
42		let cfg = config(vec![("present", Value::Uint8(9))]);
43		assert_eq!(cfg.usize_or("present", 1), 9);
44		assert_eq!(cfg.usize_or("absent", 1), 1);
45		assert_eq!(cfg.require_usize("present"), 9);
46	}
47
48	#[test]
49	#[should_panic(expected = "is missing or not an unsigned integer")]
50	fn require_panics_when_missing() {
51		let cfg = config(vec![]);
52		cfg.require_usize("k");
53	}
54}
reifydb_value/config/usize.rs

reifydb_value/config/
usize.rs
