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Fix lookahead for optional arguments.

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This commit is contained in:
Christoph Herzog 2019-05-02 14:56:51 +02:00 committed by theduke
parent 85d5480d50
commit 178f594e58
1 changed files with 51 additions and 1 deletions
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52
juniper/src/executor/look_ahead.rs
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@ -39,7 +39,13 @@ where
InputValue::Null => LookAheadValue::Null,
InputValue::Scalar(ref s) => LookAheadValue::Scalar(s),
InputValue::Enum(ref e) => LookAheadValue::Enum(e),
InputValue::Variable(ref v) => Self::from_input_value(vars.get(v).unwrap(), vars),
InputValue::Variable(ref name) => {
let value = vars
.get(name)
.map(|v| Self::from_input_value(v, vars))
.unwrap_or(LookAheadValue::Null);
value
}
InputValue::List(ref l) => LookAheadValue::List(
l.iter()
.map(|i| LookAheadValue::from_input_value(&i.item, vars))
@ -720,6 +726,50 @@ query Hero($episode: Episode) {
}
}
#[test]
fn check_query_with_optional_variable() {
let docs = parse_document_source::<DefaultScalarValue>(
"
query Hero($episode: Episode) {
hero(episode: $episode) {
id
}
}
",
)
.unwrap();
let fragments = extract_fragments(&docs);
if let crate::ast::Definition::Operation(ref op) = docs[0] {
let vars = Variables::default();
let look_ahead = LookAheadSelection::build_from_selection(
&op.item.selection_set[0],
&vars,
&fragments,
)
.unwrap();
let expected = LookAheadSelection {
name: "hero",
alias: None,
arguments: vec![LookAheadArgument {
name: "episode",
value: LookAheadValue::Null,
}],
children: vec![ChildSelection {
inner: LookAheadSelection {
name: "id",
alias: None,
arguments: Vec::new(),
children: Vec::new(),
},
applies_for: Applies::All,
}],
};
assert_eq!(look_ahead, expected);
} else {
panic!("No Operation found");
}
}
#[test]
fn check_query_with_fragment() {
let docs = parse_document_source::<DefaultScalarValue>(