rustdoc-json: Add tests for generic fn args and returns

2 files changed, 68 insertions, 0 deletions

diff --git a/src/test/rustdoc-json/fns/generic_args.rs b/src/test/rustdoc-json/fns/generic_args.rs
new file mode 100644
index 00000000000..3b03724b040
--- /dev/null
+++ b/src/test/rustdoc-json/fns/generic_args.rs
@@ -0,0 +1,47 @@
+// ignore-tidy-linelength
+
+#![feature(no_core)]
+#![no_core]
+
+// @set foo = generic_args.json "$.index[*][?(@.name=='Foo')].id"
+pub trait Foo {}
+
+// @is - "$.index[*][?(@.name=='generics')].inner.generics.where_predicates" "[]"
+// @count - "$.index[*][?(@.name=='generics')].inner.generics.params[*]" 1
+// @is - "$.index[*][?(@.name=='generics')].inner.generics.params[0].name" '"F"'
+// @is - "$.index[*][?(@.name=='generics')].inner.generics.params[0].kind.type.default" 'null'
+// @count - "$.index[*][?(@.name=='generics')].inner.generics.params[0].kind.type.bounds[*]" 1
+// @is - "$.index[*][?(@.name=='generics')].inner.generics.params[0].kind.type.bounds[0].trait_bound.trait.inner.id" '$foo'
+// @count - "$.index[*][?(@.name=='generics')].inner.decl.inputs[*]" 1
+// @is - "$.index[*][?(@.name=='generics')].inner.decl.inputs[0][0]" '"f"'
+// @is - "$.index[*][?(@.name=='generics')].inner.decl.inputs[0][1].kind" '"generic"'
+// @is - "$.index[*][?(@.name=='generics')].inner.decl.inputs[0][1].inner" '"F"'
+pub fn generics<F: Foo>(f: F) {}
+
+// @is - "$.index[*][?(@.name=='impl_trait')].inner.generics.where_predicates" "[]"
+// @count - "$.index[*][?(@.name=='impl_trait')].inner.generics.params[*]" 1
+// @is - "$.index[*][?(@.name=='impl_trait')].inner.generics.params[0].name" '"impl Foo"'
+// @is - "$.index[*][?(@.name=='impl_trait')].inner.generics.params[0].kind.type.bounds[0].trait_bound.trait.inner.id" $foo
+// @count - "$.index[*][?(@.name=='impl_trait')].inner.decl.inputs[*]" 1
+// @is - "$.index[*][?(@.name=='impl_trait')].inner.decl.inputs[0][0]" '"f"'
+// @is - "$.index[*][?(@.name=='impl_trait')].inner.decl.inputs[0][1].kind" '"impl_trait"'
+// @count - "$.index[*][?(@.name=='impl_trait')].inner.decl.inputs[0][1].inner[*]" 1
+// @is - "$.index[*][?(@.name=='impl_trait')].inner.decl.inputs[0][1].inner[0].trait_bound.trait.inner.id" $foo
+pub fn impl_trait(f: impl Foo) {}
+
+// @count - "$.index[*][?(@.name=='where_clase')].inner.generics.params[*]" 1
+// @is - "$.index[*][?(@.name=='where_clase')].inner.generics.params[0].name" '"F"'
+// @is - "$.index[*][?(@.name=='where_clase')].inner.generics.params[0].kind" '{"type": {"bounds": [], "default": null, "synthetic": false}}'
+// @count - "$.index[*][?(@.name=='where_clase')].inner.decl.inputs[*]" 1
+// @is - "$.index[*][?(@.name=='where_clase')].inner.decl.inputs[0][0]" '"f"'
+// @is - "$.index[*][?(@.name=='where_clase')].inner.decl.inputs[0][1].kind" '"generic"'
+// @is - "$.index[*][?(@.name=='where_clase')].inner.decl.inputs[0][1].inner" '"F"'
+// @count - "$.index[*][?(@.name=='where_clase')].inner.generics.where_predicates[*]" 1
+// @is - "$.index[*][?(@.name=='where_clase')].inner.generics.where_predicates[0].bound_predicate.type" '{"inner": "F", "kind": "generic"}'
+// @count - "$.index[*][?(@.name=='where_clase')].inner.generics.where_predicates[0].bound_predicate.bounds[*]" 1
+// @is - "$.index[*][?(@.name=='where_clase')].inner.generics.where_predicates[0].bound_predicate.bounds[0].trait_bound.trait.inner.id" $foo
+pub fn where_clase<F>(f: F)
+where
+    F: Foo,
+{
+}
diff --git a/src/test/rustdoc-json/fns/generic_returns.rs b/src/test/rustdoc-json/fns/generic_returns.rs
new file mode 100644
index 00000000000..1a0f33fe3d2
--- /dev/null
+++ b/src/test/rustdoc-json/fns/generic_returns.rs
@@ -0,0 +1,21 @@
+// ignore-tidy-linelength
+
+#![feature(no_core)]
+#![no_core]
+
+// @count generic_returns.json "$.index[*][?(@.name=='generic_returns')].inner.items[*]" 2
+
+// @set foo = - "$.index[*][?(@.name=='Foo')].id"
+pub trait Foo {}
+
+// @is - "$.index[*][?(@.name=='get_foo')].inner.decl.inputs" []
+// @is - "$.index[*][?(@.name=='get_foo')].inner.decl.output.kind" '"impl_trait"'
+// @count - "$.index[*][?(@.name=='get_foo')].inner.decl.output.inner[*]" 1
+// @is - "$.index[*][?(@.name=='get_foo')].inner.decl.output.inner[0].trait_bound.trait.inner.id" $foo
+pub fn get_foo() -> impl Foo {
+    Fooer {}
+}
+
+struct Fooer {}
+
+impl Foo for Fooer {}