[Index] Update test related to reporting extensions in system modules

Author: xymus

test/SourceKit/Indexing/Inputs/test_module.index.response

@@ -172,7 +172,16 @@
     {
       key.kind: source.lang.swift.decl.extension.class,
       key.name: "C2",
-      key.usr: "s:e:s:11test_module2C2C6SECRETyyF"
+      key.usr: "s:e:s:11test_module2C2C10publicFuncyyF",
+      key.entities: [
+        {
+          key.kind: source.lang.swift.decl.function.method.instance,
+          key.name: "publicFunc()",
+          key.usr: "s:11test_module2C2C10publicFuncyyF",
+          key.is_dynamic: 1,
+          key.effective_access: source.decl.effective_access.public
+        }
+      ]
     }
   ]
 }

test/SourceKit/Indexing/Inputs/test_module.swift

@@ -12,7 +12,7 @@ public class TwoInts {
 public class ComputedProperty {
   public var value : Int {
     get {
-      var result = 0
+      let result = 0
       return result
     }
     set(newVal) {
@@ -33,6 +33,16 @@ public func globalFunc() {}
 
 private func SECRET() {}
 
+extension C2 {
+  public func publicFunc() {}
+}
+
+// Don't record extensions with nothing to index.
 extension C2 {
   internal func SECRET() {}
+  private func SECRET1() {}
+  fileprivate func SECRET2() {}
 }
+
+internal protocol InternalProto {}
+extension C2: InternalProto {}