val.json

[
    "Test Specification for val",
    {
        "description": "Fetches a value",
        "rule": { "val": "hello" },
        "data": { "hello" : 0 },
        "result": 0
    },
    {
        "description": "Fetches a nested value",
        "rule": { "val": ["hello", "world"] },
        "data": { "hello" : { "world": 1 } },
        "result": 1
    },
    {
        "description": "Fetches a value from an empty key",
        "rule": { "val": "" },
        "data": { "" : 1 },
        "result": 1
    },
    {
        "description": "Fetches a value from a nested empty key",
        "rule": { "val": ["", ""] },
        "data": { "" : { "": 2 } },
        "result": 2
    },
    {
        "description": "Fetches a value from an array",
        "rule": { "val": [1] },
        "data": [1, 2],
        "result": 2
    },
    {
        "description": "Fetches a value from an array in an object",
        "rule": { "val": ["arr", 1] },
        "data": { "arr": [1, 2] },
        "result": 2
    },
    {
        "description": "Fetches a value from a doubly nested empty key",
        "rule": { "val": ["", "", ""] },
        "data": { "" : { "": { "": 3 } } },
        "result": 3
    },
    {
        "description": "Fetches a value from a key that is purely a dot",
        "rule": { "val": "." },
        "data": { "." : 20 },
        "result": 20
    },
    {
        "description": "Fetching a value from null returns null",
        "rule": { "val": "hello" },
        "data": { "hello" : null },
        "result": null
    },
    {
        "description": "Fetching a value from a null fetched value returns null",
        "rule": { "val": ["hello", "world"] },
        "data": { "hello" : null },
        "result": null
    },
    {
        "description": "Fetches the entire context",
        "rule": { "val": [] },
        "data": { "": 21 },
        "result": { "": 21 }
    },
    {
        "description": "Fetches the entire context for a nested key",
        "rule": { "val": "" },
        "data": { "": { "": 22 } },
        "result": { "": 22 }
    },
    {
        "description": "Using val in a map",
        "rule": { "map": [[1,2,3], { "+": [{ "val": [] }, 1] }] },
        "data": null,
        "result": [2,3,4]
    }
]