ganit-core 0.3.10

Spreadsheet formula engine — parser and evaluator for Excel-compatible formulas
Documentation 
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use super::super::*;
use crate::types::Value;

#[test]
fn varpa_basic_numbers() {
    // [2, 4, 6]: mean=4, pop var=((2-4)²+(4-4)²+(6-4)²)/3=8/3
    let result = varpa_fn(&[Value::Number(2.0), Value::Number(4.0), Value::Number(6.0)]);
    if let Value::Number(v) = result {
        assert!((v - 8.0 / 3.0).abs() < 1e-10);
    } else {
        panic!("Expected Number, got {:?}", result);
    }
}

#[test]
fn varpa_single_value_returns_zero() {
    // Population variance of one value is always 0
    assert_eq!(varpa_fn(&[Value::Number(7.0)]), Value::Number(0.0));
}

#[test]
fn varpa_two_values() {
    // [1, 3]: mean=2, pop var=((1-2)²+(3-2)²)/2=1
    let result = varpa_fn(&[Value::Number(1.0), Value::Number(3.0)]);
    assert_eq!(result, Value::Number(1.0));
}