test(config): better describe behavior in resolving circular dependencies

Author: lotem

data/test/config_circular_dependency_test.yaml

@@ -1,8 +1,8 @@
 test:
-  __include: sometimes?
+  __patch: sometimes?
   home: excited
   work:
     __include: /test/home
 
 sometimes:
-  work: naive
+  home: naive

test/config_compiler_test.cc

@@ -253,8 +253,11 @@ class RimeConfigCircularDependencyTest : public RimeConfigCompilerTestBase {
 
 TEST_F(RimeConfigCircularDependencyTest, BestEffortResolution) {
   const string& prefix = "test/";
-  EXPECT_TRUE(config_->IsNull(prefix + "__include"));
+  EXPECT_TRUE(config_->IsNull(prefix + "__patch"));
   EXPECT_TRUE(config_->IsNull(prefix + "work/__include"));
+  string home;
+  EXPECT_TRUE(config_->GetString(prefix + "home", &home));
+  EXPECT_EQ("naive", home);
   string work;
   EXPECT_TRUE(config_->GetString(prefix + "work", &work));
   EXPECT_EQ("excited", work);