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#![allow(non_upper_case_globals)]
#![allow(non_camel_case_types)]
#![allow(non_snake_case)]
include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
extern "C" {
pub fn jsonnet_realloc(
vm: *mut JsonnetVm,
str_: *mut std::os::raw::c_char,
sz: size_t,
) -> ::std::os::raw::c_int;
}
#[cfg(test)]
mod tests {
#[test]
fn library_version() {
let cstr = unsafe { std::ffi::CStr::from_ptr(super::jsonnet_version()) };
assert_eq!(cstr.to_str().unwrap(), "v0.17.0 (go-jsonnet)");
}
#[test]
fn evaluate_snippet() {
let filename = std::ffi::CString::new("evaluate_snippet.jsonnet")
.unwrap()
.into_raw();
let code = std::ffi::CString::new("{foo: 1+2, bar: std.isBoolean(false)}")
.unwrap()
.into_raw();
let result = unsafe {
let vm = super::jsonnet_make();
let mut err = 0;
let result_ptr = super::jsonnet_evaluate_snippet(vm, filename, code, &mut err);
let result = std::ffi::CStr::from_ptr(result_ptr)
.to_string_lossy()
.into_owned();
super::jsonnet_realloc(vm, result_ptr, 0);
super::jsonnet_destroy(vm);
if err == 0 {
Ok(result)
} else {
Err(result)
}
};
assert!(result.is_ok());
#[derive(Debug, PartialEq, serde::Deserialize)]
struct S {
foo: i32,
bar: bool,
}
let s: S = serde_json::from_str(&result.unwrap()).unwrap();
assert_eq!(s, S { foo: 3, bar: true });
}
#[test]
fn evaluate_snippet_syntax_error() {
let filename = std::ffi::CString::new("evaluate_snippet.jsonnet")
.unwrap()
.into_raw();
let code = std::ffi::CString::new("{foo: 1+}").unwrap().into_raw();
let result = unsafe {
let vm = super::jsonnet_make();
let mut err = 0;
let result_ptr = super::jsonnet_evaluate_snippet(vm, filename, code, &mut err);
let result = std::ffi::CStr::from_ptr(result_ptr)
.to_string_lossy()
.into_owned();
super::jsonnet_realloc(vm, result_ptr, 0);
super::jsonnet_destroy(vm);
if err == 0 {
Ok(result)
} else {
Err(result)
}
};
assert!(result.is_err());
assert!(result
.unwrap_err()
.starts_with("evaluate_snippet.jsonnet:1:"));
}
#[test]
fn native_callback() {
let filename = std::ffi::CString::new("native_callback.jsonnet")
.unwrap()
.into_raw();
let code = std::ffi::CString::new(
r#"
local hello = std.native("hello");
{ message: hello("world") }
"#,
)
.unwrap()
.into_raw();
let name = std::ffi::CString::new("hello").unwrap().into_raw();
unsafe extern "C" fn callback(
ctx: *mut std::ffi::c_void,
argv: *const *const super::JsonnetJsonValue,
success: *mut i32,
) -> *mut super::JsonnetJsonValue {
let vm = ctx as *mut super::JsonnetVm;
let arg_c =
super::jsonnet_json_extract_string(vm, *argv as *mut super::JsonnetJsonValue);
let arg = std::ffi::CStr::from_ptr(arg_c).to_str().unwrap();
let s = super::jsonnet_json_make_string(
vm,
std::ffi::CString::new(format!("hello {}", arg))
.unwrap()
.into_raw(),
);
*success = 1;
s
}
let mut params = vec![
std::ffi::CString::new("s").unwrap().into_raw(),
std::ptr::null_mut(),
];
let result = unsafe {
let vm = super::jsonnet_make();
super::jsonnet_native_callback(
vm,
name,
Some(callback),
vm as *mut std::ffi::c_void,
params.as_mut_ptr(),
);
let mut err = 0;
let result_ptr = super::jsonnet_evaluate_snippet(vm, filename, code, &mut err);
let result = std::ffi::CStr::from_ptr(result_ptr)
.to_string_lossy()
.into_owned();
super::jsonnet_realloc(vm, result_ptr, 0);
super::jsonnet_destroy(vm);
if err == 0 {
Ok(result)
} else {
Err(result)
}
};
assert!(result.is_ok());
#[derive(Debug, PartialEq, serde::Deserialize)]
struct S {
message: String,
}
let s: S = serde_json::from_str(&result.unwrap()).unwrap();
assert_eq!(
s,
S {
message: "hello world".to_owned()
}
);
}
}