add test package for cross-module links

Author: tayloraswift

Scripts/Linux/GenerateTestSymbolGraphs

@@ -44,7 +44,7 @@ swift symbolgraph-extract \
     -n swift \
     -o TestPackages/swift.bson
 
-for PACKAGE in swift-test swift-malibu swift-snippets swift-exportation
+for PACKAGE in swift-test swift-malibu swift-snippets swift-exportation cross-module-articles
 do
     .build/release/ssgc -u $SWIFT_INSTALLATION \
         -p TestPackages/$PACKAGE \

TestPackages/cross-module-articles/Package.swift

@@ -0,0 +1,14 @@
+// swift-tools-version:6.0
+import PackageDescription
+
+let package:Package = .init(name: "Swift Unidoc Test Modules",
+    products:
+    [
+        .library(name: "A", targets: ["A"]),
+        .library(name: "B", targets: ["B"]),
+    ],
+    targets:
+    [
+        .target(name: "A"),
+        .target(name: "B"),
+    ])

TestPackages/cross-module-articles/Sources/A/A.swift

@@ -0,0 +1 @@
+# AAAA

TestPackages/cross-module-articles/Sources/A/docs.docc/A.md

@@ -0,0 +1,3 @@
+# Article A
+
+This is an article about the ``/A`` module.

TestPackages/cross-module-articles/Sources/A/docs.docc/Some article.md

@@ -0,0 +1,8 @@
+# Article B
+
+This is an article about the ``/B`` module.
+
+All of these should resolve to an article in ``/A``:
+
+-   <doc://A/documentation/A/Some-article>
+-   <doc://A/documentation/A/A>