public async Task TestForWithNestedDictionaryImmutable() { // Using normal dictionaries because ImmutableDictionary doesn't preserve order, but this test // depends on ordering, so we just pass an ordinary Dictionary to the helper that uses // IReadOnlyDictionary. var dictionary = new Dictionary <string, object> { { "People", new Dictionary <string, object> { { "ID1", new Dictionary <string, object> { { "First", "Jane" }, { "Last", "Green" } } }, { "ID2", new Dictionary <string, object> { { "First", "Mike" }, { "Last", "Doe" } } } } } }; await Helper.AssertTemplateResultAsync("JaneMike", "{% for item in People %}{{ item.First }}{%endfor%}", Hash.FromReadOnlyDictionary(dictionary)); }