add test

Author: mununki

tests/ppx/react/expected/newtype.res.txt

@@ -5,11 +5,8 @@ type props<'a, 'b, 'c> = {
   b: 'b,
   c: 'c,
 }
-let make = ({ref}: props<'a, 'b, 'c>) => {
-  let _ = ref
-  (type a, ~a: a, ~b: array<option<[#Foo(a)]>>, ~c: 'a, _) =>
-    ReactDOMRe.createDOMElementVariadic("div", [])
-}
+let make = (@react.component type a, ~a: a, ~b: array<option<[#Foo(a)]>>, ~c: 'a, _) =>
+  ReactDOMRe.createDOMElementVariadic("div", [])
 let make = {
   let \"Newtype" = (props: props<_>) => make(props)
   \"Newtype"

tests/ppx/react/expected/typeConstraint.res.txt

@@ -4,11 +4,8 @@ type props<'a, 'b> = {
   a: 'a,
   b: 'b,
 }
-let make: 'a. (~a: 'a, ~b: 'a, 'a) => React.element = ({ref}: props<'a, 'b>) => {
-  let _ = ref
-  (type a): ((~a: a, ~b: a, a) => React.element) =>
-    (~a, ~b, _) => ReactDOMRe.createDOMElementVariadic("div", [])
-}
+let make = (@react.component type a): ((~a: a, ~b: a, a) => React.element) =>
+  (~a, ~b, _) => ReactDOMRe.createDOMElementVariadic("div", [])
 let make = {
   let \"TypeConstraint" = (props: props<_>) => make(props)
   \"TypeConstraint"