Rocket/core/codegen/tests/from_form.rs

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#[macro_use] extern crate rocket;
use rocket::request::{FromForm, FormItems, FormParseError};
use rocket::http::RawStr;
fn parse<'f, T>(string: &'f str, strict: bool) -> Result<T, FormParseError<'f>>
where T: FromForm<'f, Error = FormParseError<'f>>
{
let mut items = FormItems::from(string);
let result = T::from_form(items.by_ref(), strict);
if !items.exhaust() {
panic!("Invalid form input.");
}
result
}
fn strict<'f, T>(string: &'f str) -> Result<T, FormParseError<'f>>
where T: FromForm<'f, Error = FormParseError<'f>>
{
parse(string, true)
}
fn lenient<'f, T>(string: &'f str) -> Result<T, FormParseError<'f>>
where T: FromForm<'f, Error = FormParseError<'f>>
{
parse(string, false)
}
#[derive(Debug, PartialEq, FromForm)]
struct TodoTask {
description: String,
completed: bool
}
#[test]
fn simple() {
// Same number of arguments: simple case.
let task: Option<TodoTask> = strict("description=Hello&completed=on").ok();
assert_eq!(task, Some(TodoTask {
description: "Hello".to_string(),
completed: true
}));
// Argument in string but not in form.
let task: Option<TodoTask> = strict("other=a&description=Hello&completed=on").ok();
assert!(task.is_none());
// Ensure _method isn't required.
let task: Option<TodoTask> = strict("_method=patch&description=Hello&completed=off").ok();
assert_eq!(task, Some(TodoTask {
description: "Hello".to_string(),
completed: false
}));
}
#[derive(Debug, PartialEq, FromFormValue)]
enum FormOption {
A, B, C
}
#[derive(Debug, PartialEq, FromForm)]
struct FormInput<'r> {
checkbox: bool,
number: usize,
radio: FormOption,
password: &'r RawStr,
textarea: String,
select: FormOption,
}
#[derive(Debug, PartialEq, FromForm)]
struct DefaultInput<'r> {
arg: Option<&'r RawStr>,
}
#[derive(Debug, PartialEq, FromForm)]
struct ManualMethod<'r> {
_method: Option<&'r RawStr>,
done: bool
}
#[derive(Debug, PartialEq, FromForm)]
struct UnpresentCheckbox {
checkbox: bool
}
#[derive(Debug, PartialEq, FromForm)]
struct UnpresentCheckboxTwo<'r> {
checkbox: bool,
something: &'r RawStr
}
#[derive(Debug, PartialEq, FromForm)]
struct FieldNamedV<'r> {
v: &'r RawStr,
}
#[test]
fn base_conditions() {
let form_string = &[
"password=testing", "checkbox=off", "checkbox=on", "number=10",
"checkbox=off", "textarea=", "select=a", "radio=c",
].join("&");
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let input: Option<FormInput<'_>> = strict(&form_string).ok();
assert_eq!(input, Some(FormInput {
checkbox: false,
number: 10,
radio: FormOption::C,
password: "testing".into(),
textarea: "".to_string(),
select: FormOption::A,
}));
// Argument not in string with default in form.
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let default: Option<DefaultInput<'_>> = strict("").ok();
assert_eq!(default, Some(DefaultInput {
arg: None
}));
// Ensure _method can be captured if desired.
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let manual: Option<ManualMethod<'_>> = strict("_method=put&done=true").ok();
assert_eq!(manual, Some(ManualMethod {
_method: Some("put".into()),
done: true
}));
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let manual: Option<ManualMethod<'_>> = lenient("_method=put&done=true").ok();
assert_eq!(manual, Some(ManualMethod {
_method: Some("put".into()),
done: true
}));
// And ignored when not present.
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let manual: Option<ManualMethod<'_>> = strict("done=true").ok();
assert_eq!(manual, Some(ManualMethod {
_method: None,
done: true
}));
// Check that a `bool` value that isn't in the form is marked as `false`.
let manual: Option<UnpresentCheckbox> = strict("").ok();
assert_eq!(manual, Some(UnpresentCheckbox {
checkbox: false
}));
// Check that a `bool` value that isn't in the form is marked as `false`.
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let manual: Option<UnpresentCheckboxTwo<'_>> = strict("something=hello").ok();
assert_eq!(manual, Some(UnpresentCheckboxTwo {
checkbox: false,
something: "hello".into()
}));
// Check that a structure with one field `v` parses correctly.
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let manual: Option<FieldNamedV<'_>> = strict("v=abc").ok();
assert_eq!(manual, Some(FieldNamedV {
v: "abc".into()
}));
}
#[test]
fn lenient_parsing() {
// Check that a structure with one field `v` parses correctly (lenient).
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let manual: Option<FieldNamedV<'_>> = lenient("v=abc").ok();
assert_eq!(manual, Some(FieldNamedV { v: "abc".into() }));
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let manual: Option<FieldNamedV<'_>> = lenient("v=abc&a=123").ok();
assert_eq!(manual, Some(FieldNamedV { v: "abc".into() }));
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let manual: Option<FieldNamedV<'_>> = lenient("c=abcddef&v=abc&a=123").ok();
assert_eq!(manual, Some(FieldNamedV { v: "abc".into() }));
// Check default values (bool) with lenient parsing.
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let manual: Option<UnpresentCheckboxTwo<'_>> = lenient("something=hello").ok();
assert_eq!(manual, Some(UnpresentCheckboxTwo {
checkbox: false,
something: "hello".into()
}));
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let manual: Option<UnpresentCheckboxTwo<'_>> = lenient("hi=hi&something=hello").ok();
assert_eq!(manual, Some(UnpresentCheckboxTwo {
checkbox: false,
something: "hello".into()
}));
// Check that a missing field doesn't parse, even leniently.
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let manual: Option<FieldNamedV<'_>> = lenient("a=abc").ok();
assert!(manual.is_none());
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let manual: Option<FieldNamedV<'_>> = lenient("_method=abc").ok();
assert!(manual.is_none());
}
#[derive(Debug, PartialEq, FromForm)]
struct RenamedForm {
single: usize,
#[form(field = "camelCase")]
camel_case: String,
#[form(field = "TitleCase")]
title_case: String,
#[form(field = "type")]
field_type: isize,
#[form(field = "DOUBLE")]
double: String,
#[form(field = "a.b")]
dot: isize,
#[form(field = "some space")]
some_space: String,
}
#[test]
fn field_renaming() {
let form_string = &[
"single=100", "camelCase=helloThere", "TitleCase=HiHi", "type=-2",
"DOUBLE=bing_bong", "a.b=123", "some space=okay"
].join("&");
let form: Option<RenamedForm> = strict(&form_string).ok();
assert_eq!(form, Some(RenamedForm {
single: 100,
camel_case: "helloThere".into(),
title_case: "HiHi".into(),
field_type: -2,
double: "bing_bong".into(),
dot: 123,
some_space: "okay".into(),
}));
let form_string = &[
"single=100", "camel_case=helloThere", "TitleCase=HiHi", "type=-2",
"DOUBLE=bing_bong", "dot=123", "some_space=okay"
].join("&");
let form: Option<RenamedForm> = strict(&form_string).ok();
assert!(form.is_none());
}
#[derive(FromForm, Debug, PartialEq)]
struct YetOneMore<'f, T> {
string: &'f RawStr,
other: T,
}
#[derive(FromForm, Debug, PartialEq)]
struct Oops<A, B, C> {
base: String,
a: A,
b: B,
c: C,
}
#[test]
fn generics() {
let form_string = &[
"string=hello", "other=00128"
].join("&");
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let form: Option<YetOneMore<'_, usize>> = strict(&form_string).ok();
assert_eq!(form, Some(YetOneMore {
string: "hello".into(),
other: 128,
}));
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let form: Option<YetOneMore<'_, u8>> = strict(&form_string).ok();
assert_eq!(form, Some(YetOneMore {
string: "hello".into(),
other: 128,
}));
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let form: Option<YetOneMore<'_, i8>> = strict(&form_string).ok();
assert!(form.is_none());
let form_string = &[
"base=just%20a%20test", "a=hey%20there", "b=a", "c=811",
].join("&");
let form: Option<Oops<&RawStr, FormOption, usize>> = strict(&form_string).ok();
assert_eq!(form, Some(Oops {
base: "just a test".into(),
a: "hey%20there".into(),
b: FormOption::A,
c: 811,
}));
}
#[derive(Debug, PartialEq, FromForm)]
struct WhoopsForm {
complete: bool,
other: usize,
}
#[test]
fn form_errors() {
let form: Result<WhoopsForm, _> = strict("complete=true&other=781");
assert_eq!(form, Ok(WhoopsForm { complete: true, other: 781 }));
let form: Result<WhoopsForm, _> = strict("complete=true&other=unknown");
assert_eq!(form, Err(FormParseError::BadValue("other".into(), "unknown".into())));
let form: Result<WhoopsForm, _> = strict("complete=unknown&other=unknown");
assert_eq!(form, Err(FormParseError::BadValue("complete".into(), "unknown".into())));
let form: Result<WhoopsForm, _> = strict("complete=true&other=1&extra=foo");
assert_eq!(form, Err(FormParseError::Unknown("extra".into(), "foo".into())));
// Bad values take highest precedence.
let form: Result<WhoopsForm, _> = strict("complete=unknown&unknown=foo");
assert_eq!(form, Err(FormParseError::BadValue("complete".into(), "unknown".into())));
// Then unknown key/values for strict parses.
let form: Result<WhoopsForm, _> = strict("complete=true&unknown=foo");
assert_eq!(form, Err(FormParseError::Unknown("unknown".into(), "foo".into())));
// Finally, missing.
let form: Result<WhoopsForm, _> = strict("complete=true");
assert_eq!(form, Err(FormParseError::Missing("other".into())));
}