Foundry Book

keyExistsJson

Signature

// Check if a key exists in a JSON string.
vm.keyExistsJson(string memory json, string memory key) returns (bool)

Description

Checks if a key exists in a JSON string.

Examples

string memory path = "./path/to/jsonfile.json";
string memory json = vm.readFile(path);
bool exists = vm.keyExistsJson(json, ".key");
assertTrue(exists);