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firefox/third_party/rust/serde_with/tests/utils.rs
Daniel Baumann 5e9a113729
Adding upstream version 140.0.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-25 09:37:52 +02:00

135 lines
3.7 KiB
Rust

#![allow(dead_code, missing_docs)]
use core::fmt::Debug;
use expect_test::Expect;
use pretty_assertions::assert_eq;
use serde::{de::DeserializeOwned, Serialize};
#[track_caller]
pub fn is_equal<T>(value: T, expected: Expect)
where
T: Debug + DeserializeOwned + PartialEq + Serialize,
{
let serialized = serde_json::to_string_pretty(&value).unwrap();
expected.assert_eq(&serialized);
assert_eq!(
value,
serde_json::from_str::<T>(&serialized).unwrap(),
"Deserialization differs from expected value."
);
}
/// Like [`is_equal`] but not pretty-print
#[track_caller]
pub fn is_equal_compact<T>(value: T, expected: Expect)
where
T: Debug + DeserializeOwned + PartialEq + Serialize,
{
let serialized = serde_json::to_string(&value).unwrap();
expected.assert_eq(&serialized);
assert_eq!(
value,
serde_json::from_str::<T>(&serialized).unwrap(),
"Deserialization differs from expected value."
);
}
#[track_caller]
pub fn check_deserialization<T>(value: T, deserialize_from: &str)
where
T: Debug + DeserializeOwned + PartialEq,
{
assert_eq!(
value,
serde_json::from_str::<T>(deserialize_from).unwrap(),
"Deserialization differs from expected value."
);
}
#[track_caller]
pub fn check_serialization<T>(value: T, serialize_to: Expect)
where
T: Debug + Serialize,
{
serialize_to.assert_eq(&serde_json::to_string_pretty(&value).unwrap());
}
#[track_caller]
pub fn check_error_serialization<T>(value: T, error_msg: Expect)
where
T: Debug + Serialize,
{
error_msg.assert_eq(
&serde_json::to_string_pretty(&value)
.unwrap_err()
.to_string(),
);
}
#[track_caller]
pub fn check_error_deserialization<T>(deserialize_from: &str, error_msg: Expect)
where
T: Debug + DeserializeOwned,
{
error_msg.assert_eq(
&serde_json::from_str::<T>(deserialize_from)
.unwrap_err()
.to_string(),
);
}
#[track_caller]
pub fn check_matches_schema<T>(value: &serde_json::Value)
where
T: schemars_0_8::JsonSchema,
{
use jsonschema::Validator;
use std::fmt::Write;
if cfg!(feature = "schemars_0_8") {
let schema_object = serde_json::to_value(schemars_0_8::schema_for!(T))
.expect("schema for T could not be serialized to json");
let schema = match Validator::new(&schema_object) {
Ok(schema) => schema,
Err(e) => panic!("schema for T was not a valid JSON schema: {e}"),
};
if let Err(err) = schema.validate(value) {
let mut message = String::new();
let _ = writeln!(
&mut message,
"Object was not valid according to its own schema:"
);
let _ = writeln!(&mut message, " -> {}", err);
let _ = writeln!(&mut message);
let _ = writeln!(&mut message, "Object Value:");
let _ = writeln!(
&mut message,
"{}",
serde_json::to_string_pretty(&value).unwrap_or_else(|e| format!("> error: {e}"))
);
let _ = writeln!(&mut message);
let _ = writeln!(&mut message, "JSON Schema:");
let _ = writeln!(
&mut message,
"{}",
serde_json::to_string_pretty(&schema_object)
.unwrap_or_else(|e| format!("> error: {e}"))
);
panic!("{}", message);
};
}
}
#[track_caller]
pub fn check_valid_json_schema<T>(value: &T)
where
T: schemars_0_8::JsonSchema + Serialize,
{
let value = serde_json::to_value(value).expect("could not serialize T to json");
check_matches_schema::<T>(&value);
}