add test for impl link test of local functions

src/test/java/depends/extractor/cpp/RelationInSameFileTest.java

@@ -0,0 +1,47 @@
+package depends.extractor.cpp;
+
+import depends.entity.Entity;
+import depends.entity.FunctionEntityImpl;
+import depends.entity.FunctionEntityProto;
+import depends.relations.Relation;
+import multilang.depends.util.file.FileUtil;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.io.IOException;
+
+import static org.junit.Assert.assertEquals;
+
+public class RelationInSameFileTest extends CppParserTest{
+    @Before
+    public void setUp() {
+    	super.init();
+    }
+	
+	@Test
+	public void should_convert_call_relation_to_impl() throws IOException {
+		String[] srcs = new String[] {
+	    		"./src/test/resources/cpp-code-examples/relation_in_samefile/A.c",
+				"./src/test/resources/cpp-code-examples/relation_in_samefile/B.c"
+	    	    };
+	    
+	    for (String src:srcs) {
+		    CppFileParser parser = createParser(src);
+		    parser.parse();
+	    }
+	    inferer.resolveAllBindings(true,null);
+	    Entity bar = repo.getEntity(FileUtil.uniqFilePath(srcs[0]));
+	    int matchCount = 0;
+	    for (Relation relation:bar.getRelations()) {
+	    	if (relation.getEntity() instanceof FunctionEntityProto) {
+	    		matchCount++;
+	    	}
+	    	if (relation.getEntity() instanceof FunctionEntityImpl) {
+	    		matchCount++;
+	    	}
+	    }
+	    assertEquals(2, matchCount);
+	}
+	
+
+}

src/test/resources/cpp-code-examples/relation_in_samefile/A.c

@@ -0,0 +1,10 @@
+static void register_hooks(apr_pool_t *p)
+{
+}
+
+typedef struct module_struct module;
+struct module_struct {
+    void (*register_hooks) (apr_pool_t *p);
+};
+
+module bar = {register_hooks};

src/test/resources/cpp-code-examples/relation_in_samefile/B.c

@@ -0,0 +1,3 @@
+static void register_hooks()
+{
+}