ironcalc_base 0.7.1

Open source spreadsheet engine
Documentation 
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#![allow(clippy::panic)]
use crate::{cell::CellValue, test::util::new_empty_model};

#[test]
fn test_yearfrac_basis_2_actual_360() {
    let mut model = new_empty_model();

    // Non-leap span of exactly 360 days should result in 1.0
    model._set("A1", "=YEARFRAC(44561,44921,2)");

    // Leap-year span of 366 days: Jan 1 2020 → Jan 1 2021
    model._set("A2", "=YEARFRAC(43831,44197,2)");

    // Reverse order should yield negative value
    model._set("A3", "=YEARFRAC(44921,44561,2)");

    model.evaluate();

    // 360/360
    assert_eq!(model._get_text("A1"), *"1");

    // 366/360 ≈ 1.0166666667 (tolerance 1e-10)
    if let Ok(CellValue::Number(v)) = model.get_cell_value_by_ref("Sheet1!A2") {
        assert!((v - 1.016_666_666_7).abs() < 1e-10);
    } else {
        panic!("Expected numeric value in A2");
    }

    // always positive A1
    assert_eq!(model._get_text("A3"), *"1");
}

#[test]
fn test_yearfrac_basis_3_actual_365() {
    let mut model = new_empty_model();

    // Non-leap span of exactly 365 days should result in 1.0
    model._set("B1", "=YEARFRAC(44561,44926,3)");

    // Leap-year span of 366 days
    model._set("B2", "=YEARFRAC(43831,44197,3)");

    // Same date should be 0
    model._set("B3", "=YEARFRAC(44561,44561,3)");

    model.evaluate();

    // 365/365
    assert_eq!(model._get_text("B1"), *"1");

    // 366/365 ≈ 1.002739726 (tolerance 1e-10)
    if let Ok(CellValue::Number(v)) = model.get_cell_value_by_ref("Sheet1!B2") {
        assert!((v - 1.002_739_726).abs() < 1e-10);
    } else {
        panic!("Expected numeric value in B2");
    }

    // Same date
    assert_eq!(model._get_text("B3"), *"0");
}