json-parser/tests/happy_paths.rs
Timothy Warren 12924f2f69
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2021-04-16 22:24:25 -04:00

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Rust

use naive_json_parser::JSONValue::{Array, False, Null, Number, Object, True};
use naive_json_parser::*;
use std::collections::HashMap;
use std::convert::TryFrom;
use std::f64::consts::PI;
#[test]
fn value_conversion() -> Result<(), &'static str> {
let map: JSONMap = HashMap::new();
let num = 9.380831539;
let str = "applesauce";
let arr: JSONArray = vec![
JSONValue::from(map.clone()),
JSONValue::from(num),
JSONValue::from(str),
];
assert_eq!(map.clone(), JSONMap::try_from(JSONValue::from(map.clone()))?);
assert_eq!(num, f64::try_from(JSONValue::from(num))?);
assert_eq!(String::from(str), String::try_from(JSONValue::from(str))?);
assert_eq!(arr.clone(), JSONArray::try_from(JSONValue::from(arr.clone()))?);
assert_eq!(true, bool::try_from(JSONValue::from(true))?);
assert_eq!(false, bool::try_from(JSONValue::from(false))?);
assert_eq!((), <()>::from(JSONValue::from(())));
Ok(())
}
#[test]
fn wrap_and_unwrap() {
let map: JSONMap = HashMap::new();
let num = 9.380831539;
let str = "applesauce";
let arr: JSONArray = vec![
JSONValue::from(map.clone()),
JSONValue::from(num),
JSONValue::from(str),
];
let s: String = JSONValue::from(str).unwrap();
let a: JSONArray = JSONValue::from(arr.clone()).unwrap();
assert_eq!(map.clone(), JSONValue::from(map.clone()).unwrap());
assert_eq!(num, JSONValue::from(num).unwrap());
assert_eq!(str, &s);
assert_eq!(arr.clone(), a);
assert_eq!(true, JSONValue::from(true).unwrap());
assert_eq!(false, JSONValue::from(false).unwrap());
assert_eq!((), JSONValue::from(()).unwrap());
}
#[test]
fn sanity_check() {
let res = JSON::parse(r#""foo""#);
assert_eq!(res, Ok(JSONValue::String(String::from("foo"))));
let json = format!("{}", PI);
let res = JSON::parse(&json);
assert_eq!(res, Ok(JSONValue::Number(PI)));
}
#[test]
fn can_parse_array_of_keywords() {
let result = JSON::parse("[true,false,null]");
assert_eq!(result, Ok(Array(vec![True, False, Null])));
}
#[test]
fn parse_json_types() {
// Boolean / Null
let res = JSON::parse("true");
assert_eq!(res, Ok(True));
let res = JSON::parse("false");
assert_eq!(res, Ok(False));
let res = JSON::parse("null");
assert_eq!(res, Ok(Null));
// Number
let res = JSON::parse("9.38083151965");
assert_eq!(res, Ok(Number(9.38083151965)), "Failed to parse number");
// String
let res = JSON::parse(r#""/^$/""#);
assert_eq!(res, Ok(JSONValue::from("/^$/")), "Failed to parse string");
// Number array
let res = JSON::parse("[1, 2, 3]");
assert_eq!(
res,
Ok(Array(vec![Number(1f64), Number(2f64), Number(3f64)]))
);
// Object array
let result = JSON::parse("[{}]");
assert_eq!(result, Ok(JSONValue::Array(vec![Object(HashMap::new())])));
}
#[test]
fn parse_nested_object() {
let res = JSON::parse(r#"{"a": {"b": []}}"#);
let mut outermap: JSONMap = HashMap::new();
let mut innermap: JSONMap = HashMap::new();
innermap.insert(String::from("b"), Array(vec![]));
outermap.insert(String::from("a"), Object(innermap));
let expected = Ok(Object(outermap));
assert_eq!(res, expected);
}
#[test]
fn parse_object_with_number_values() {
let result = JSON::parse(r#"[{ "a": 9.38083151965, "b": 4e3 }]"#);
let mut map: JSONMap = HashMap::new();
map.insert(String::from("a"), Number(9.38083151965f64));
map.insert(String::from("b"), Number(4e3f64));
let expected = Ok(Array(vec![Object(map)]));
assert_eq!(
result, expected,
"Failed on just number values: {:#?}",
result
);
}
#[test]
fn parse_weird_character_array() {
let result =
JSON::parse(r#"["\"", "\\", "/", "\b", "\f", "\n", "\r", "\t", "\u0001", "\uface"]"#);
let expected = Ok(Array(vec![
JSONValue::from("\""),
JSONValue::from("\\"),
JSONValue::from("/"),
JSONValue::from("\u{8}"),
JSONValue::from("\x0C"),
JSONValue::from("\n"),
JSONValue::from("\r"),
JSONValue::from("\t"),
JSONValue::from("\u{1}"),
JSONValue::from("\u{face}"),
]));
assert_eq!(result, expected);
}
#[test]
fn parse_full_json_example() {
let result = JSON::parse(
r#"[{
"a": 9.38083151965,
"b": 4e3,
"c": [1, 2, 3],
"d": "foo",
"e": {
"f": {
"g": {
"h": null
}
}
},
"i": ["\"", "\\", "/", "\b", "\f", "\n", "\r", "\t", "\u0001", "\uface"]
}]"#,
);
let mut map: JSONMap = HashMap::new();
let mut emap: JSONMap = HashMap::new();
let mut fmap: JSONMap = HashMap::new();
let mut gmap: JSONMap = HashMap::new();
gmap.insert(String::from("h"), Null);
fmap.insert(String::from("g"), Object(gmap));
emap.insert(String::from("f"), Object(fmap));
map.insert(String::from("a"), Number(9.38083151965f64));
map.insert(String::from("b"), Number(4e3f64));
map.insert(
String::from("c"),
Array(vec![Number(1f64), Number(2f64), Number(3f64)]),
);
map.insert(String::from("d"), JSONValue::from("foo"));
map.insert(String::from("e"), Object(emap));
map.insert(
String::from("i"),
Array(vec![
JSONValue::from("\""),
JSONValue::from("\\"),
JSONValue::from("/"),
JSONValue::from("\u{8}"),
JSONValue::from("\x0C"),
JSONValue::from("\n"),
JSONValue::from("\r"),
JSONValue::from("\t"),
JSONValue::from("\u{1}"),
JSONValue::from("\u{face}"),
]),
);
assert!(result.is_ok(), "{:#?}", result);
let outer_array: Vec<JSONValue> = result.unwrap().unwrap();
let result_map: JSONMap = outer_array[0].clone().unwrap();
for (k, v) in &map {
assert_eq!(
result_map.get(k).unwrap(),
v,
"HashMap Entry Differs: {:#?}, {:#?}",
result_map.get(k).unwrap(),
v
);
}
}