Check in codegen test expectations.

test/codegen/expect/language/issue_22780_test_01_multi.js

Index: test/codegen/expect/language/issue_22780_test_01_multi.js
diff --git a/test/codegen/expect/language/issue_22780_test_01_multi.js b/test/codegen/expect/language/issue_22780_test_01_multi.js
new file mode 100644
index 0000000000000000000000000000000000000000..c9b0da932dc0d6f129b982eff51449db3386f29a
--- /dev/null
+++ b/test/codegen/expect/language/issue_22780_test_01_multi.js
@@ -0,0 +1,20 @@
+dart_library.library('language/issue_22780_test_01_multi', null, /* Imports */[
+  'dart_sdk'
+], function load__issue_22780_test_01_multi(exports, dart_sdk) {
+  'use strict';
+  const core = dart_sdk.core;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const issue_22780_test_01_multi = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  issue_22780_test_01_multi.main = function() {
+    function f() {
+      return dart.str`Oh, the joy of ${f()}`;
+    }
+    dart.fn(f, VoidTodynamic());
+    core.print(f());
+  };
+  dart.fn(issue_22780_test_01_multi.main, VoidTodynamic());
+  // Exports:
+  exports.issue_22780_test_01_multi = issue_22780_test_01_multi;
+});