Add a basic test repo for javascript

test/js_test_repo/A/main.js

@@ -0,0 +1,12 @@
+const print = console.log;
+
+function funcA () {
+	print('func A is called!');
+}
+
+function main() {
+	let a = funcA;
+	a();
+}
+
+main();

test/js_test_repo/B/main.js

@@ -0,0 +1,17 @@
+const print = console.log;
+
+function funcA () {
+	print('func A is called!');
+}
+
+function main() {
+	let a = funcA;
+	let b = function funcB () {
+		print('func B is called!');
+	}
+	let c = a;
+	b();
+	c();
+}
+
+main();

test/js_test_repo/C/main.js

@@ -0,0 +1,18 @@
+const print = console.log;
+
+function funcA () {
+	print('func A is called!');
+}
+
+function main() {
+	let a = funcA;
+	let b = function funcB () {
+		funcA();
+		print('func B is called!');
+	}
+	let c = a;
+	b();
+	c();
+}
+
+main();

test/js_test_repo/cg.dot

@@ -0,0 +1,3 @@
+digraph test_feature_branch {
+	A -> B -> C;
+}