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//! Tests for the [`crate::ast::Selection`] enum's
//! `append_source` delegation to inner variants.
use crate::ast::FieldSelection;
use crate::ast::FragmentSpread;
use crate::ast::InlineFragment;
use crate::ast::Selection;
use crate::ast::SelectionSet;
use crate::ast::TypeCondition;
use crate::ast::tests::ast_test_utils::make_byte_span;
use crate::ast::tests::ast_test_utils::make_name;
/// Verify `Selection::Field` variant delegates
/// `append_source` correctly.
///
/// Relevant spec section:
/// https://spec.graphql.org/September2025/#sec-Language.Fields
///
/// Written by Claude Code, reviewed by a human.
#[test]
fn selection_field_variant_source_slice() {
let source = "hello";
let sel = Selection::Field(FieldSelection {
span: make_byte_span(0, 5),
alias: None,
name: make_name("hello", 0, 5),
arguments: vec![],
directives: vec![],
selection_set: None,
syntax: None,
});
let mut sink = String::new();
sel.append_source(&mut sink, Some(source));
assert_eq!(sink, "hello");
}
/// Verify `Selection::FragmentSpread` variant delegates
/// `append_source` correctly.
///
/// Relevant spec section:
/// https://spec.graphql.org/September2025/#FragmentSpread
///
/// Written by Claude Code, reviewed by a human.
#[test]
fn selection_fragment_spread_source_slice() {
let source = "...UserFields";
let sel = Selection::FragmentSpread(
FragmentSpread {
span: make_byte_span(0, 13),
name: make_name(
"UserFields", 3, 13,
),
directives: vec![],
syntax: None,
},
);
let mut sink = String::new();
sel.append_source(&mut sink, Some(source));
assert_eq!(sink, "...UserFields");
}
/// Verify `Selection::InlineFragment` variant delegates
/// `append_source` correctly.
///
/// Relevant spec section:
/// https://spec.graphql.org/September2025/#InlineFragment
///
/// Written by Claude Code, reviewed by a human.
#[test]
fn selection_inline_fragment_source_slice() {
let source = "... on User { name }";
let sel = Selection::InlineFragment(
InlineFragment {
span: make_byte_span(0, 20),
type_condition: Some(TypeCondition {
span: make_byte_span(4, 11),
named_type: make_name(
"User", 7, 11,
),
syntax: None,
}),
directives: vec![],
selection_set: SelectionSet {
span: make_byte_span(12, 20),
selections: vec![
Selection::Field(FieldSelection {
span: make_byte_span(14, 18),
alias: None,
name: make_name(
"name", 14, 18,
),
arguments: vec![],
directives: vec![],
selection_set: None,
syntax: None,
}),
],
syntax: None,
},
syntax: None,
},
);
let mut sink = String::new();
sel.append_source(&mut sink, Some(source));
assert_eq!(sink, source);
}