Evaluate expression in context of an object

runtime/vm/compiler_test.cc

Index: runtime/vm/compiler_test.cc
===================================================================
--- runtime/vm/compiler_test.cc	(revision 26326)
+++ runtime/vm/compiler_test.cc	(working copy)
@@ -5,6 +5,7 @@
 #include "platform/assert.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
+#include "vm/dart_api_impl.h"
 #include "vm/object.h"
 #include "vm/symbols.h"
 #include "vm/unit_test.h"
@@ -63,4 +64,34 @@
   EXPECT(function_moo.HasCode());
 }
 
+
+TEST_CASE(EvalExpression) {
+  const char* kScriptChars =
+      "int ten = 2 * 5;              \n"
+      "get dot => '.';               \n"
+      "class A {                     \n"
+      "  var apa = 'Herr Nilsson';   \n"
+      "  calc(x) => '${x*ten}';      \n"
+      "}                             \n"
+      "makeObj() => new A();         \n";
+
+  Dart_Handle lib = TestCase::LoadTestScript(kScriptChars, NULL);
+  Dart_Handle obj_handle =
+      Dart_Invoke(lib, Dart_NewStringFromCString("makeObj"), 0,  NULL);
+  EXPECT(!Dart_IsNull(obj_handle));
+  EXPECT(!Dart_IsError(obj_handle));
+  const Object& obj = Object::Handle(Api::UnwrapHandle(obj_handle));
+  EXPECT(!obj.IsNull());
+  EXPECT(obj.IsInstance());
+
+  String& expr_text = String::Handle();
+  expr_text = String::New("apa + ' ${calc(10)}' + dot");
+  Object& val = Object::Handle();
+  val = Instance::Cast(obj).Evaluate(expr_text);
+  EXPECT(!val.IsNull());
+  EXPECT(!val.IsError());
+  EXPECT(val.IsString());
+  EXPECT_STREQ("Herr Nilsson 100.", val.ToCString());
+}
+
 }  // namespace dart