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use indoc::indoc;
use serde_derive::Deserialize;
use std::fmt::Debug;
fn test_error<T>(yaml: &str, expected: &str)
where
T: serde::de::DeserializeOwned + Debug,
{
let result = serde_yaml::from_str::<T>(yaml);
assert_eq!(expected, format!("{}", result.unwrap_err()));
}
#[test]
fn test_incorrect_type() {
let yaml = indoc! {"
---
str
"};
let expected = "invalid type: string \"str\", expected i16 at line 2 column 1";
test_error::<i16>(yaml, expected);
}
#[test]
fn test_incorrect_nested_type() {
#[derive(Deserialize, Debug)]
struct A {
#[allow(dead_code)]
b: Vec<B>,
}
#[derive(Deserialize, Debug)]
enum B {
C(C),
}
#[derive(Deserialize, Debug)]
struct C {
#[allow(dead_code)]
d: bool,
}
let yaml = indoc! {"
---
b:
- C:
d: fase
"};
let expected =
"b[0].C.d: invalid type: string \"fase\", expected a boolean at line 4 column 10";
test_error::<A>(yaml, expected);
}
#[test]
fn test_empty() {
let expected = "EOF while parsing a value";
test_error::<String>("", expected);
}
#[test]
fn test_missing_field() {
#[derive(Deserialize, Debug)]
struct Basic {
#[allow(dead_code)]
v: bool,
#[allow(dead_code)]
w: bool,
}
let yaml = indoc! {"
---
v: true
"};
let expected = "missing field `w` at line 2 column 2";
test_error::<Basic>(yaml, expected);
}
#[test]
fn test_unknown_anchor() {
let yaml = indoc! {"
---
*some
"};
let expected = "while parsing node, found unknown anchor at line 2 column 1";
test_error::<String>(yaml, expected);
}
#[test]
fn test_ignored_unknown_anchor() {
#[derive(Deserialize, Debug)]
struct Wrapper {
#[allow(dead_code)]
c: (),
}
let yaml = indoc! {"
---
b: [*a]
c: ~
"};
let expected = "while parsing node, found unknown anchor at line 2 column 5";
test_error::<Wrapper>(yaml, expected);
}
#[test]
fn test_two_documents() {
let yaml = indoc! {"
---
0
---
1
"};
let expected = "deserializing from YAML containing more than one document is not supported";
test_error::<usize>(yaml, expected);
}
#[test]
fn test_variant_map_wrong_size() {
#[derive(Deserialize, Debug)]
enum E {
V(usize),
}
let yaml = indoc! {r#"
---
"V": 16
"other": 32
"#};
let expected = "invalid length 2, expected map containing 1 entry";
test_error::<E>(yaml, expected);
}
#[test]
fn test_variant_not_a_map() {
#[derive(Deserialize, Debug)]
enum E {
V(usize),
}
let yaml = indoc! {r#"
---
- "V"
"#};
let expected = "invalid type: sequence, expected string or singleton map at line 2 column 1";
test_error::<E>(yaml, expected);
}
#[test]
fn test_variant_not_string() {
#[derive(Deserialize, Debug)]
enum E {
V(bool),
}
let yaml = indoc! {r#"
---
{}: true
"#};
let expected = "invalid type: map, expected variant of enum `E` at line 2 column 1";
test_error::<E>(yaml, expected);
}
#[test]
fn test_bad_bool() {
let yaml = indoc! {"
---
!!bool str
"};
let expected = "invalid value: string \"str\", expected a boolean at line 2 column 8";
test_error::<bool>(yaml, expected);
}
#[test]
fn test_bad_int() {
let yaml = indoc! {"
---
!!int str
"};
let expected = "invalid value: string \"str\", expected an integer at line 2 column 7";
test_error::<i64>(yaml, expected);
}
#[test]
fn test_bad_float() {
let yaml = indoc! {"
---
!!float str
"};
let expected = "invalid value: string \"str\", expected a float at line 2 column 9";
test_error::<f64>(yaml, expected);
}
#[test]
fn test_bad_null() {
let yaml = indoc! {"
---
!!null str
"};
let expected = "invalid value: string \"str\", expected null at line 2 column 8";
test_error::<()>(yaml, expected);
}
#[test]
fn test_short_tuple() {
let yaml = indoc! {"
---
[0, 0]
"};
let expected = "invalid length 2, expected a tuple of size 3 at line 2 column 1";
test_error::<(u8, u8, u8)>(yaml, expected);
}
#[test]
fn test_long_tuple() {
let yaml = indoc! {"
---
[0, 0, 0]
"};
let expected = "invalid length 3, expected sequence of 2 elements at line 2 column 1";
test_error::<(u8, u8)>(yaml, expected);
}
#[test]
fn test_no_location() {
let invalid_utf8: Result<serde_yaml::Value, serde_yaml::Error> =
serde_yaml::from_slice(b"\x80\xae");
let utf8_location = invalid_utf8.unwrap_err().location();
assert!(utf8_location.is_none());
}
#[test]
fn test_invalid_scalar_type() {
#[derive(Deserialize, Debug)]
struct S {
#[allow(dead_code)]
x: [(); 1],
}
let yaml = "x:\n";
let expected = "x: invalid type: unit value, expected an array of length 1 at line 2 column 1";
test_error::<S>(yaml, expected);
}
#[test]
fn test_infinite_recursion_objects() {
#[derive(Deserialize, Debug)]
struct S {
#[allow(dead_code)]
x: Option<Box<S>>,
}
let yaml = "&a {x: *a}";
let expected = "recursion limit exceeded";
test_error::<S>(yaml, expected);
}
#[test]
fn test_infinite_recursion_arrays() {
#[derive(Deserialize, Debug)]
struct S {
#[allow(dead_code)]
x: Option<Box<S>>,
}
let yaml = "&a [*a]";
let expected = "recursion limit exceeded";
test_error::<S>(yaml, expected);
}
#[test]
fn test_finite_recursion_objects() {
#[derive(Deserialize, Debug)]
struct S {
#[allow(dead_code)]
x: Option<Box<S>>,
}
let yaml = "{x:".repeat(1_000) + &"}".repeat(1_000);
let expected = "recursion limit exceeded at line 1 column 766";
test_error::<i32>(&yaml, expected);
}
#[test]
fn test_finite_recursion_arrays() {
#[derive(Deserialize, Debug)]
struct S {
#[allow(dead_code)]
x: Option<Box<S>>,
}
let yaml = "[".repeat(1_000) + &"]".repeat(1_000);
let expected = "recursion limit exceeded at line 1 column 256";
test_error::<S>(&yaml, expected);
}