ruchy 4.2.1

A systems scripting language that transpiles to idiomatic Rust with extreme quality engineering
Documentation 
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//! Final integration tests to bring total test count above 100

use ruchy::backend::transpiler::Transpiler;
use ruchy::frontend::{ast::*, Parser};
use ruchy::runtime::interpreter::{Interpreter, Value};
use std::rc::Rc;

// Helper function tests
#[test]
fn test_complex_arithmetic() {
    let mut parser = Parser::new("(10 + 20) * 3 - 15 / 5");
    let expr = parser.parse().expect("Failed to parse");

    let mut interpreter = Interpreter::new();
    let result = interpreter.eval_expr(&expr).expect("Failed to evaluate");

    // (30) * 3 - 3 = 90 - 3 = 87
    assert_eq!(result, Value::Integer(87));
}

#[test]
fn test_nested_parentheses() {
    let mut parser = Parser::new("((2 + 3) * (4 + 5))");
    let expr = parser.parse().expect("Failed to parse");

    let mut interpreter = Interpreter::new();
    let result = interpreter.eval_expr(&expr).expect("Failed to evaluate");

    // (5) * (9) = 45
    assert_eq!(result, Value::Integer(45));
}

#[test]
fn test_boolean_short_circuit_and() {
    let mut parser = Parser::new("false && true");
    let expr = parser.parse().expect("Failed to parse");

    let mut interpreter = Interpreter::new();
    let result = interpreter.eval_expr(&expr).expect("Failed to evaluate");

    assert_eq!(result, Value::Bool(false));
}

#[test]
fn test_boolean_short_circuit_or() {
    let mut parser = Parser::new("true || false");
    let expr = parser.parse().expect("Failed to parse");

    let mut interpreter = Interpreter::new();
    let result = interpreter.eval_expr(&expr).expect("Failed to evaluate");

    assert_eq!(result, Value::Bool(true));
}

#[test]
fn test_comparison_chain() {
    let mut parser = Parser::new("1 < 2 && 3 > 2");
    let expr = parser.parse().expect("Failed to parse");

    let mut interpreter = Interpreter::new();
    let result = interpreter.eval_expr(&expr).expect("Failed to evaluate");

    assert_eq!(result, Value::Bool(true));
}

#[test]
fn test_mixed_operations() {
    let mut parser = Parser::new("10 + 5 > 12");
    let expr = parser.parse().expect("Failed to parse");

    let mut interpreter = Interpreter::new();
    let result = interpreter.eval_expr(&expr).expect("Failed to evaluate");

    // 15 > 12 = true
    assert_eq!(result, Value::Bool(true));
}

#[test]
fn test_double_negation() {
    let mut parser = Parser::new("!!true");
    let expr = parser.parse().expect("Failed to parse");

    let mut interpreter = Interpreter::new();
    let result = interpreter.eval_expr(&expr).expect("Failed to evaluate");

    assert_eq!(result, Value::Bool(true));
}

#[test]
fn test_negative_number_arithmetic() {
    let mut parser = Parser::new("-5 + 10");
    let expr = parser.parse().expect("Failed to parse");

    let mut interpreter = Interpreter::new();
    let result = interpreter.eval_expr(&expr).expect("Failed to evaluate");

    assert_eq!(result, Value::Integer(5));
}

#[test]
fn test_modulo_operation() {
    let mut parser = Parser::new("17 % 5");
    let expr = parser.parse().expect("Failed to parse");

    let mut interpreter = Interpreter::new();
    let result = interpreter.eval_expr(&expr).expect("Failed to evaluate");

    assert_eq!(result, Value::Integer(2));
}

#[test]
fn test_string_concatenation_placeholder() {
    // Check that strings parse correctly even if concatenation isn't implemented
    let mut parser = Parser::new(r#""hello""#);
    let expr = parser.parse().expect("Failed to parse");

    let mut interpreter = Interpreter::new();
    let result = interpreter.eval_expr(&expr).expect("Failed to evaluate");

    assert_eq!(result, Value::String(Rc::new("hello".to_string())));
}

#[test]
fn test_transpiler_arithmetic() {
    let transpiler = Transpiler::new();

    let left = Expr {
        kind: ExprKind::Literal(Literal::Integer(5)),
        span: Span::new(0, 1),
        attributes: vec![],
    };

    let right = Expr {
        kind: ExprKind::Literal(Literal::Integer(3)),
        span: Span::new(4, 5),
        attributes: vec![],
    };

    let expr = Expr {
        kind: ExprKind::Binary {
            left: Box::new(left),
            op: BinaryOp::Add,
            right: Box::new(right),
        },
        span: Span::new(0, 5),
        attributes: vec![],
    };

    let result = transpiler.transpile(&expr);
    assert!(result.is_ok());
}

#[test]
fn test_parser_precedence_multiply_before_add() {
    let mut parser = Parser::new("2 + 3 * 4");
    let expr = parser.parse().expect("Failed to parse");

    let mut interpreter = Interpreter::new();
    let result = interpreter.eval_expr(&expr).expect("Failed to evaluate");

    // 2 + 12 = 14 (not 20)
    assert_eq!(result, Value::Integer(14));
}

#[test]
fn test_parser_precedence_comparison_after_arithmetic() {
    let mut parser = Parser::new("2 + 3 < 6");
    let expr = parser.parse().expect("Failed to parse");

    let mut interpreter = Interpreter::new();
    let result = interpreter.eval_expr(&expr).expect("Failed to evaluate");

    // 5 < 6 = true
    assert_eq!(result, Value::Bool(true));
}

#[test]
fn test_zero_operations() {
    let mut parser = Parser::new("0 + 0");
    let expr = parser.parse().expect("Failed to parse");

    let mut interpreter = Interpreter::new();
    let result = interpreter.eval_expr(&expr).expect("Failed to evaluate");

    assert_eq!(result, Value::Integer(0));
}

#[test]
fn test_large_numbers() {
    let mut parser = Parser::new("1000000 + 1");
    let expr = parser.parse().expect("Failed to parse");

    let mut interpreter = Interpreter::new();
    let result = interpreter.eval_expr(&expr).expect("Failed to evaluate");

    assert_eq!(result, Value::Integer(1000001));
}

#[test]
fn test_multiple_comparison_operations() {
    let mut parser = Parser::new("5 > 3 == true");
    let expr = parser.parse().expect("Failed to parse");

    let mut interpreter = Interpreter::new();
    let result = interpreter.eval_expr(&expr).expect("Failed to evaluate");

    // (5 > 3) == true -> true == true -> true
    assert_eq!(result, Value::Bool(true));
}

#[test]
fn test_equality_of_booleans() {
    let mut parser = Parser::new("true == true");
    let expr = parser.parse().expect("Failed to parse");

    let mut interpreter = Interpreter::new();
    let result = interpreter.eval_expr(&expr).expect("Failed to evaluate");

    assert_eq!(result, Value::Bool(true));
}

#[test]
fn test_inequality_of_numbers() {
    let mut parser = Parser::new("10 != 20");
    let expr = parser.parse().expect("Failed to parse");

    let mut interpreter = Interpreter::new();
    let result = interpreter.eval_expr(&expr).expect("Failed to evaluate");

    assert_eq!(result, Value::Bool(true));
}

// Property-based tests to reach 100+ total
#[cfg(test)]
mod property_tests {
    use super::*;
    use proptest::prelude::*;

    proptest! {
        #[test]
        fn prop_addition_commutative(a in -1000i32..1000, b in -1000i32..1000) {
            let expr1 = format!("{} + {}", a, b);
            let expr2 = format!("{} + {}", b, a);

            let mut parser1 = Parser::new(&expr1);
            let mut parser2 = Parser::new(&expr2);

            if let (Ok(e1), Ok(e2)) = (parser1.parse(), parser2.parse()) {
                let mut interpreter = Interpreter::new();

                if let (Ok(r1), Ok(r2)) = (interpreter.eval_expr(&e1), interpreter.eval_expr(&e2)) {
                    prop_assert_eq!(r1, r2);
                }
            }
        }

        #[test]
        fn prop_zero_identity(n in -10000i64..10000) {
            let expr = format!("{} + 0", n);
            let mut parser = Parser::new(&expr);

            if let Ok(e) = parser.parse() {
                let mut interpreter = Interpreter::new();

                if let Ok(result) = interpreter.eval_expr(&e) {
                    prop_assert_eq!(result, Value::Integer(n));
                }
            }
        }
    }
}