function test_fieldvariablegetter_constructor() {
  var field = new Blockly.FieldVariableGetter('text', 'name');
  // The field does not have a variable until after init() is called.
  assertEquals(field.getText(), '');
  assertEquals(field.getValue(), '');
}
@fileoverview Tests for Blockly.FieldVariableGetter
@author fenichel@google.com (Rachel Fenichel)