read_json

Function for reading JSON files.

fn read_json(file: @File) -> Array<felt252>;

ℹ️ Info

Specific rules must be followed for snforge to correctly parse JSON files.

Read file format rules for more.

Example

File content:

{
    "age": 30,
    "job": "Software Engineer",
    "location": {
        "city": "New York",
        "country": "USA"
    },
    "name": "John",
    "surname": "Doe"
}

Test code:

use snforge_std::fs::{FileTrait, read_json};

#[test]
fn read_json_example() {
    // Create an instance of `File` to be used later
    let file = FileTrait::new("data/user.json");

    // Read the JSON content from the file
    let content = read_json(@file);

    let expected_serialized_json = array![
        30, 0, 28391512738467412385612170632190008583538, 17, 0, 5649052288429290091, 8, 0, 5591873,
        3, 0, 1248815214, 4, 0, 4484965, 3,
    ];
    let mut i = 0;

    // Iterate through the content and compare with expected values
    while i != content.len() {
        println!("0x{:x}", *content[i]);
        assert!(*content[i] == *expected_serialized_json[i]);
        i += 1;
    };
}

Let's run the test:

$ snforge test read_json_example

Collected 1 test(s) from snforge_library_reference package
Running 1 test(s) from tests/
0x1e
0x0
0x536f66747761726520456e67696e656572
0x11
0x0
0x4e657720596f726b
0x8
0x0
0x555341
0x3
0x0
0x4a6f686e
0x4
0x0
0x446f65
0x3
[PASS] snforge_library_reference_integrationtest::test_fs_read_json::read_json_example ([..])
Running 0 test(s) from src/
Tests: 1 passed, 0 failed, 0 ignored, [..] filtered out