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#[macro_use]
extern crate serde_derive;
extern crate serde_qs as qs;
use std::collections::HashMap;
#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
struct Address {
city: String,
postcode: String,
}
#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
struct QueryParams {
id: u8,
name: String,
address: Address,
phone: u32,
user_ids: Vec<u8>,
}
// Compares a map generated by hash_to_map with the map returned by
// qs::from_str. All types are inferred by the compiler.
macro_rules! map_test {
($string:expr, $($mapvars:tt)*) => {
let expected_map = hash_to_map!(New $($mapvars)*);
let testmap: HashMap<_, _> = qs::from_str($string).unwrap();
assert_eq!(expected_map, testmap);
}
}
// Macro used to quickly generate a nested HashMap from a string.
macro_rules! hash_to_map {
// Base case: a map with no inputs, do nothing.
($map:expr, ) => ();
//{}
// This parses a single map entry, with a value explicitly an expression.
($map:expr, $k:tt[e $v:expr] $($rest:tt)*) => {{
$map.insert($k.to_owned(), $v.to_owned());
hash_to_map!($map, $($rest)*);
}};
// This parses a single map entry, plus the rest of the values.
($map:expr, $k:tt[$v:tt] $($rest:tt)*) => {{
$map.insert($k.to_owned(), $v.to_owned());
hash_to_map!($map, $($rest)*);
}};
// This parses the first entry as a nested entry, and tail calls the
// remaining in rest.
($map:expr, $k:tt[$($inner:tt)*] $($rest:tt)*) => {{
let mut inner_map = HashMap::new();
hash_to_map!(inner_map, $($inner)*);
$map.insert($k.to_owned(), inner_map);
hash_to_map!($map, $($rest)*);
}};
// Constructs the map and then runs the macro. This infers the types for the
// hashmap.
(New $($rest:tt)*) => {{
let mut map = HashMap::new();
hash_to_map!(map, $($rest)*);
map
}}
}
#[test]
fn deserialize_struct() {
let params = QueryParams {
id: 42,
name: "Acme".to_string(),
phone: 12345,
address: Address {
city: "Carrot City".to_string(),
postcode: "12345".to_string(),
},
user_ids: vec![1, 2, 3, 4],
};
// standard parameters
let rec_params: QueryParams = qs::from_str("\
name=Acme&id=42&phone=12345&address[postcode]=12345&\
address[city]=Carrot+City&user_ids[0]=1&user_ids[1]=2&\
user_ids[2]=3&user_ids[3]=4")
.unwrap();
assert_eq!(rec_params, params);
// unindexed arrays
let rec_params: QueryParams = qs::from_str("\
name=Acme&id=42&phone=12345&address[postcode]=12345&\
address[city]=Carrot+City&user_ids[]=1&user_ids[]=2&\
user_ids[]=3&user_ids[]=4")
.unwrap();
assert_eq!(rec_params, params);
// ordering doesn't matter
let rec_params: QueryParams = qs::from_str("\
address[city]=Carrot+City&user_ids[]=1&user_ids[]=2&\
name=Acme&id=42&phone=12345&address[postcode]=12345&\
user_ids[]=3&user_ids[]=4")
.unwrap();
assert_eq!(rec_params, params);
}
#[test]
fn qs_test_simple() {
// test('parse()', function (t) {
// t.test('parses a simple string', function (st) {
// st.deepEqual(qs.parse('0=foo'), { 0: 'foo' });
map_test!("0=foo", 0["foo"]);
// st.deepEqual(qs.parse('foo=c++'), { foo: 'c ' });
map_test!("foo=c++", "foo"["c "]);
// st.deepEqual(qs.parse('a[>=]=23'), { a: { '>=': '23' } });
map_test!("a[>=]=23", "a"[">="[23]]);
// st.deepEqual(qs.parse('a[<=>]==23'), { a: { '<=>': '=23' } });
map_test!("a[<=>]==23", "a"["<=>"["=23"]]);
// st.deepEqual(qs.parse('a[==]=23'), { a: { '==': '23' } });
map_test!("a[==]=23", "a"["=="[23]]);
// st.deepEqual(qs.parse('foo', { strictNullHandling: true }),
// { foo: null });
let none: Option<String> = Option::None;
map_test!("foo", "foo"[none]);
// st.deepEqual(qs.parse('foo'), { foo: '' });
map_test!("foo", "foo"[""]);
// st.deepEqual(qs.parse('foo='), { foo: '' });
map_test!("foo=", "foo"[""]);
// st.deepEqual(qs.parse('foo=bar'), { foo: 'bar' });
map_test!("foo=bar", "foo"["bar"]);
// st.deepEqual(qs.parse(' foo = bar = baz '), { ' foo ': ' bar = baz ' });
map_test!(" foo = bar = baz ", " foo "[" bar = baz "]);
// st.deepEqual(qs.parse('foo=bar=baz'), { foo: 'bar=baz' });
map_test!("foo=bar=baz", "foo"["bar=baz"]);
// st.deepEqual(qs.parse('foo=bar&bar=baz'), { foo: 'bar', bar: 'baz' });
map_test!("foo=bar&bar=baz", "foo"["bar"] "bar"["baz"]);
// st.deepEqual(qs.parse('foo2=bar2&baz2='), { foo2: 'bar2', baz2: '' });
map_test!("foo2=bar2&baz2=", "foo2"["bar2"] "baz2"[""]);
// st.deepEqual(qs.parse('foo=bar&baz', { strictNullHandling: true }), {
// foo: 'bar', baz: null });
map_test!("foo=bar&baz", "foo"[e Some("bar".to_string())] "baz"[e None]);
// st.deepEqual(qs.parse('foo=bar&baz'), { foo: 'bar', baz: '' });
map_test!("foo=bar&baz", "foo"["bar"] "baz"[""]);
// st.deepEqual(qs.parse('cht=p3&chd=t:60,40&chs=250x100&chl=Hello|World'),
// {
// cht: 'p3',
// chd: 't:60,40',
// chs: '250x100',
// chl: 'Hello|World'
// });
map_test!("cht=p3&chd=t:60,40&chs=250x100&chl=Hello|World",
"cht"["p3"]
"chd"["t:60,40"]
"chs"["250x100"]
"chl"["Hello|World"]
);
// st.end();
// });
}
#[test]
fn qs_nesting() {
// t.deepEqual(qs.parse('a[b]=c'), { a: { b: 'c' } }, 'parses a single
// nested string');
map_test!("a[b]=c", "a"["b"["c"]]);
// t.deepEqual(qs.parse('a[b][c]=d'), { a: { b: { c: 'd' } } }, 'parses a
// double nested string');
map_test!("a[b][c]=d", "a"["b"["c"["d"]]]);
// t.deepEqual(
// qs.parse('a[b][c][d][e][f][g][h]=i'),
// { a: { b: { c: { d: { e: { f: { '[g][h]': 'i' } } } } } } },
// 'defaults to a depth of 5'
// );
map_test!("a[b][c][d][e][f][g][h]=i",
"a"["b"["c"["d"["e"["f"["[g][h]"["i"]]]]]]]);
}
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