[SourceKit/DocSupport][test] Test that the synthesized comments generated for cross-import overlay decls are ignored.

Unlike doc comments, they shouldn't be reported in the 'fully_annotated_decl' field.

Author: Nathan Hawes

test/SourceKit/DocSupport/doc_swift_module_cross_import.swift

@@ -1,7 +1,14 @@
-// RUN: %empty-directory(%t)
+// RUN: %empty-directory(%t.mod)
+// RUN: %empty-directory(%t.mod/mcp)
 
-// Check the interface shows the decls from each of A's cross-import overlays.
+// Check doc info shows the decls from each of A's cross-import overlays and lists the required bystander modules.
 //
-// RUN: %sourcekitd-test -req=doc-info -module A -- -I %S/../Inputs/CrossImport > %t.response
-// RUN: diff --strip-trailing-cr -u %s.response %t.response
+// RUN: %sourcekitd-test -req=doc-info -module A -- -I %S/../Inputs/CrossImport -module-cache-path %t.mod/mcp > %t.response
+// RUN: diff --strip-trailing-cr -u %s.A.response %t.response
+
+// Set up a cross-import module with doc comments and check the synthesized comments don't appear in the fully_annotated_decl entries.
+//
+// RUN: %target-swift-frontend -emit-module-path %t.mod/_OtherCAdditions.swiftmodule -emit-module-doc-path %t.mod/_OtherCAdditions.swiftdoc -module-cache-path %t.mod/mcp -I %S/../Inputs/CrossImport %S/../Inputs/CrossImport/_OtherCAdditions.swift -parse-as-library
+// RUN: %sourcekitd-test -req=doc-info -module Other -- -target %target-triple -I %S/../Inputs/CrossImport -I %t.mod/ -module-cache-path %t.mod/mcp > %t.response
+// RUN: diff --strip-trailing-cr -u %s.Other.response %t.response
 

test/SourceKit/DocSupport/doc_swift_module_cross_import.swift.response renamed to test/SourceKit/DocSupport/doc_swift_module_cross_import.swift.A.response

@@ -0,0 +1,92 @@
+import SwiftOnoneSupport
+
+func fromOther()
+
+
+// MARK: - C Additions
+
+import C
+
+// Available when C is imported with Other
+func from_OtherCAdditions()
+
+
+[
+  {
+    key.kind: source.lang.swift.syntaxtype.keyword,
+    key.offset: 0,
+    key.length: 6
+  },
+  {
+    key.kind: source.lang.swift.syntaxtype.identifier,
+    key.offset: 7,
+    key.length: 17
+  },
+  {
+    key.kind: source.lang.swift.syntaxtype.keyword,
+    key.offset: 26,
+    key.length: 4
+  },
+  {
+    key.kind: source.lang.swift.syntaxtype.identifier,
+    key.offset: 31,
+    key.length: 9
+  },
+  {
+    key.kind: source.lang.swift.syntaxtype.comment,
+    key.offset: 45,
+    key.length: 23
+  },
+  {
+    key.kind: source.lang.swift.syntaxtype.comment.mark,
+    key.offset: 48,
+    key.length: 19
+  },
+  {
+    key.kind: source.lang.swift.syntaxtype.keyword,
+    key.offset: 69,
+    key.length: 6
+  },
+  {
+    key.kind: source.lang.swift.syntaxtype.identifier,
+    key.offset: 76,
+    key.length: 1
+  },
+  {
+    key.kind: source.lang.swift.syntaxtype.comment,
+    key.offset: 79,
+    key.length: 43
+  },
+  {
+    key.kind: source.lang.swift.syntaxtype.keyword,
+    key.offset: 122,
+    key.length: 4
+  },
+  {
+    key.kind: source.lang.swift.syntaxtype.identifier,
+    key.offset: 127,
+    key.length: 20
+  }
+]
+[
+  {
+    key.kind: source.lang.swift.decl.function.free,
+    key.name: "fromOther()",
+    key.usr: "s:5Other04fromA0yyF",
+    key.offset: 26,
+    key.length: 16,
+    key.fully_annotated_decl: "<decl.function.free><syntaxtype.keyword>func</syntaxtype.keyword> <decl.name>fromOther</decl.name>()</decl.function.free>"
+  },
+  {
+    key.kind: source.lang.swift.decl.function.free,
+    key.name: "from_OtherCAdditions()",
+    key.usr: "s:16_OtherCAdditions05from_aB0yyF",
+    key.doc.full_as_xml: "<Function><Name>from_OtherCAdditions()</Name><USR>s:16_OtherCAdditions05from_aB0yyF</USR><Declaration>func from_OtherCAdditions()</Declaration><CommentParts><Abstract><Para>This has some interesting documentation that shouldn’t be separated from the decl when we print the comment detailing its required bystanders in the generated interface of ‘Other’.</Para></Abstract></CommentParts></Function>",
+    key.offset: 122,
+    key.length: 27,
+    key.fully_annotated_decl: "<decl.function.free><syntaxtype.keyword>func</syntaxtype.keyword> <decl.name>from_OtherCAdditions</decl.name>()</decl.function.free>",
+    key.required_bystanders: [
+      "C"
+    ]
+  }
+]