[Parse] Add test case for newline between @ and attribute name

ahoppen · ahoppen · commit 3ffdc955ebce · 2024-02-01T14:53:38.000-08:00
diff --git a/test/Parse/attribute_spacing.swift b/test/Parse/attribute_spacing.swift
@@ -26,3 +26,8 @@ let closure1 = { @MainActor (a, b) in // expected-warning {{extraneous whitespac
 let closure2 = { @MainActor
   (a: Int, b: Int) in
 }
+
+// expected-warning@+1{{extraneous whitespace between '@' and attribute name; this is an error in Swift 6}}
+@ 
+MainActor
+func mainActorFunc() {}

Original file line number	Diff line number	Diff line change
`@@ -26,3 +26,8 @@ let closure1 = { @MainActor (a, b) in // expected-warning {{extraneous whitespac`
`26`	`26`	`let closure2 = { @MainActor`
`27`	`27`	`(a: Int, b: Int) in`
`28`	`28`	`}`
	`29`	`+`
	`30`	`+// expected-warning@+1{{extraneous whitespace between '@' and attribute name; this is an error in Swift 6}}`
	`31`	`+@`
	`32`	`+MainActor`
	`33`	`+func mainActorFunc() {}`