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use pretty_assertions::assert_eq;
use schemars::{r#gen::SchemaSettings, schema::RootSchema, schema_for, JsonSchema};
use std::error::Error;
use std::fs;
pub type TestResult = Result<(), Box<dyn Error>>;
#[allow(dead_code)] // https://github.com/rust-lang/rust/issues/46379
pub fn test_generated_schema<T: JsonSchema>(file: &str, settings: SchemaSettings) -> TestResult {
let actual = settings.into_generator().into_root_schema_for::<T>();
test_schema(&actual, file)
}
#[allow(dead_code)] // https://github.com/rust-lang/rust/issues/46379
pub fn test_default_generated_schema<T: JsonSchema>(file: &str) -> TestResult {
let actual = schema_for!(T);
test_schema(&actual, file)
}
pub fn test_schema(actual: &RootSchema, file: &str) -> TestResult {
let expected_json = match fs::read_to_string(format!("tests/expected/{}.json", file)) {
Ok(j) => j,
Err(e) => {
write_actual_to_file(actual, file)?;
return Err(Box::from(e));
}
};
let expected = &serde_json::from_str(&expected_json)?;
if actual != expected {
write_actual_to_file(actual, file)?;
}
assert_eq!(expected, actual);
Ok(())
}
fn write_actual_to_file(schema: &RootSchema, file: &str) -> TestResult {
let actual_json = serde_json::to_string_pretty(&schema)?;
fs::write(format!("tests/actual/{}.json", file), actual_json)?;
Ok(())
}
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