Add failing test for guarding against 'import' def results across files

Author: rnkaufman

languages/tree-sitter-stack-graphs-java/src/stack-graphs.tsg

@@ -34,6 +34,15 @@ attribute node_symbol = node            => symbol = (source-text node), source_n
 ; #       #    #  ####   ####  #    # #    # #    #  ####
 ;
 ; ########################################################
+(program)@prog {
+  scan FILE_PATH {
+    "([^/]+)\.java$" {
+    ; FIXME add definitions
+
+    }
+  }
+
+}
 
 (program)@prog {
   node @prog.defs

languages/tree-sitter-stack-graphs-java/test/imports_and_exports/imports.java

@@ -0,0 +1,20 @@
+/*--- path: a.java ---*/
+import foo.bar.Baz;
+
+public class Importer {
+  public static void main(String[] args) {
+    Baz.some_method();
+  // ^ defined: 2
+  }
+}
+
+
+/* --- path: b.java ---*/
+
+import foo.bar.Baz;
+
+public class AnotherImporter {
+  public static void main(String[] args) {
+    Baz.some_method();
+  }
+}