@nlighten/json-transform-core/dist/functions/examples/substring.json

Core types and utilities for handling JSON transformers

[
    {
        "name": "inline (no args)",
        "given": {
            "input": "hello-world",
            "definition": "$$substring:$"
        },
        "expect": {
            "equal": "hello-world"
        }
    },
    {
        "name": "inline (no args, parenthesis)",
        "given": {
            "input": "hello-world",
            "definition": "$$substring():$"
        },
        "expect": {
            "equal": "hello-world"
        }
    },
    {
        "name": "inline (5)",
        "given": {
            "input": "hello-world",
            "definition": "$$substring(5):$"
        },
        "expect": {
            "equal": "-world"
        }
    },
    {
        "name": "inline (5,8)",
        "given": {
            "input": "hello-world",
            "definition": "$$substring(5,8):$"
        },
        "expect": {
            "equal": "-wo"
        }
    },
    {
        "name": "inline (-5)",
        "given": {
            "input": "hello-world",
            "definition": "$$substring(-5):$"
        },
        "expect": {
            "equal": "world"
        }
    },
    {
        "name": "inline (5,-5)",
        "given": {
            "input": "hello-world",
            "definition": "$$substring(5,-5):$"
        },
        "expect": {
            "equal": "-"
        }
    },
    {
        "name": "inline (-5,-1)",
        "given": {
            "input": "hello-world",
            "definition": "$$substring(-5,-1):$"
        },
        "expect": {
            "equal": "worl"
        }
    },
    {
        "name": "inline (coercion from number)",
        "given": {
            "input": 12345678,
            "definition": "$$substring(-5,-1):$"
        },
        "expect": {
            "equal": "4567"
        }
    }
]