// ============================================================================
// 098 — Multiple Cells in One File
// ============================================================================
// A file can contain multiple cells. Each is an independent unit.
// Tests can reference handlers from non-test cells.
//
// Run:   soma test 098_multi_cell.cell
// Expect: All tests pass
//
// Run:   soma run 098_multi_cell.cell run
// Expect:
//   5 + 3 = 8
//   5 - 3 = 2
//   5 * 3 = 15
//   abs(-7) = 7

// Cell 1: Arithmetic operations
cell Arithmetic {
    on add(a: Int, b: Int) {
        return a + b
    }

    on subtract(a: Int, b: Int) {
        return a - b
    }

    on multiply(a: Int, b: Int) {
        return a * b
    }

    on absolute(n: Int) {
        return abs(n)
    }

    on run() {
        let r = add(5, 3)
        print("{r}")
        return "done"
    }
}

// Cell 2: Demo that uses the arithmetic cell
cell Demo {
    on run() {
        let a = 5
        let b = 3
        let sum = a + b
        let diff = a - b
        let prod = a * b
        let av = abs(-7)
        print("{a} + {b} = {sum}")
        print("{a} - {b} = {diff}")
        print("{a} * {b} = {prod}")
        print("abs(-7) = {av}")
        return "done"
    }
}

// Cell 3: Tests for the arithmetic cell
cell test ArithmeticTests {
    rules {
        assert add(10, 20) == 30
        assert subtract(10, 3) == 7
        assert multiply(6, 7) == 42
        assert absolute(-42) == 42
        assert absolute(42) == 42
    }
}