qubit-argument 0.4.4

Structured, ownership-preserving argument validation for Rust applications
Documentation 
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

// =============================================================================
//    Copyright (c) 2025 - 2026 Haixing Hu.
//
//    SPDX-License-Identifier: Apache-2.0
//
//    Licensed under the Apache License, Version 2.0.
// =============================================================================
//! Tests for public behavior provided by private numeric value support.

use qubit_argument::{
    ArgumentErrorKind,
    ArgumentValue,
    NumericArgument,
};

/// Verifies that integer numeric support captures the signed value exactly.
#[test]
fn test_numeric_value_support_captures_signed_integer() {
    let error = (-1_i32)
        .require_non_negative("offset")
        .expect_err("negative offset must fail");

    assert_eq!(
        error.kind(),
        &ArgumentErrorKind::Comparison {
            actual: ArgumentValue::from(-1_i32),
            constraint: qubit_argument::ComparisonConstraint::AtLeast(
                ArgumentValue::from(0_i32),
            ),
        },
    );
}

/// Verifies that floating-point numeric support classifies NaN values.
#[test]
fn test_numeric_value_support_classifies_nan() {
    let error = f64::NAN
        .require_zero("ratio")
        .expect_err("NaN cannot satisfy numeric validation");

    assert_eq!(error.kind(), &ArgumentErrorKind::NotANumber);
}