[
    {
        "name": "Math: Subtraction",
        "expression": "=-(10, 3)",
        "expected": 7
    },
    {
        "name": "Math: Multiplication",
        "expression": "=*(4, 5)",
        "expected": 20
    },
    {
        "name": "Math: Division",
        "expression": "=/(20, 4)",
        "expected": 5
    },
    {
        "name": "Math: Round",
        "expression": "=round(3.7)",
        "expected": 4
    },
    {
        "name": "String: Upper",
        "expression": "=upper('hello')",
        "expected": "HELLO"
    },
    {
        "name": "String: Lower",
        "expression": "=lower('WORLD')",
        "expected": "world"
    },
    {
        "name": "String: Concat",
        "expression": "=concat('Hello', ' ', 'World')",
        "expected": "Hello World"
    },
    {
        "name": "String: Trim",
        "expression": "=trim('  spaced  ')",
        "expected": "spaced"
    },
    {
        "name": "Logic: And (true)",
        "expression": "=and(true, true)",
        "expected": true
    },
    {
        "name": "Logic: And (false)",
        "expression": "=and(true, false)",
        "expected": false
    },
    {
        "name": "Logic: Or",
        "expression": "=or(false, true)",
        "expected": true
    },
    {
        "name": "Logic: Not",
        "expression": "=not(false)",
        "expected": true
    },
    {
        "name": "Compare: Greater Than",
        "expression": "=gt(10, 5)",
        "expected": true
    },
    {
        "name": "Compare: Less Than",
        "expression": "=lt(3, 7)",
        "expected": true
    },
    {
        "name": "Compare: Equal",
        "expression": "=eq(5, 5)",
        "expected": true
    },
    {
        "name": "Conditional: If (true branch)",
        "expression": "=if(true, 'Yes', 'No')",
        "expected": "Yes"
    },
    {
        "name": "Conditional: If (false branch)",
        "expression": "=if(false, 'Yes', 'No')",
        "expected": "No"
    },
    {
        "name": "Stats: Average",
        "expression": "=avg(10, 20, 30)",
        "expected": 20
    },
    {
        "name": "Stats: Min",
        "expression": "=min(5, 2, 8)",
        "expected": 2
    },
    {
        "name": "Stats: Max",
        "expression": "=max(5, 2, 8)",
        "expected": 8
    },
    {
        "name": "Array: Length",
        "state": {
            "items": [
                "a",
                "b",
                "c"
            ]
        },
        "expression": "=len(/items)",
        "expected": 3
    },
    {
        "name": "Array: Join",
        "state": {
            "items": [
                "a",
                "b",
                "c"
            ]
        },
        "expression": "=join(/items, '-')",
        "expected": "a-b-c"
    },
    {
        "name": "Array: First",
        "state": {
            "items": [
                "a",
                "b",
                "c"
            ]
        },
        "expression": "=first(/items)",
        "expected": "a"
    },
    {
        "name": "Array: Last",
        "state": {
            "items": [
                "a",
                "b",
                "c"
            ]
        },
        "expression": "=last(/items)",
        "expected": "c"
    }
]