JSON Schema Compiler supports functions as PropertyTypes.

tools/json_schema_compiler/test/functions_as_parameters_unittest.cc

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "tools/json_schema_compiler/test/functions_as_parameters.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+using namespace test::api::functions_as_parameters;
+
+TEST(JsonSchemaCompilerFunctionsAsParametersTest, PopulateRequiredFunction) {
+  // The expectation is that if any value is set for the function, then
+  // the function is "present".
+  {
+    DictionaryValue empty_value;
+    FunctionType out;
+    EXPECT_FALSE(FunctionType::Populate(empty_value, &out));
+  }
+  {
+    DictionaryValue value;
+    DictionaryValue function_dict;
+    value.Set("event_callback", function_dict.DeepCopy());
+    FunctionType out;
+    ASSERT_TRUE(FunctionType::Populate(value, &out));
+    EXPECT_TRUE(out.event_callback.empty());
+  }
+}
+
+TEST(JsonSchemaCompilerFunctionsAsParametersTest, RequiredFunctionToValue) {
+  {
+    DictionaryValue value;
+    DictionaryValue function_dict;
+    value.Set("event_callback", function_dict.DeepCopy());
+
+    FunctionType out;
+    ASSERT_TRUE(FunctionType::Populate(value, &out));
+    EXPECT_TRUE(value.Equals(out.ToValue().get()));
+  }
+  {
+    DictionaryValue value;
+    DictionaryValue expected_value;
+    DictionaryValue function_dict;
+    value.Set("event_callback", function_dict.DeepCopy());
+    expected_value.Set("event_callback", function_dict.DeepCopy());
+
+    FunctionType out;
+    ASSERT_TRUE(FunctionType::Populate(value, &out));
+    EXPECT_TRUE(expected_value.Equals(out.ToValue().get()));
+  }
+}
+
+TEST(JsonSchemaCompilerFunctionsAsParametersTest, PopulateOptionalFunction) {
+  {
+    DictionaryValue empty_value;
+    OptionalFunctionType out;
+    ASSERT_TRUE(OptionalFunctionType::Populate(empty_value, &out));
+    EXPECT_FALSE(out.event_callback.get());
+  }
+  {
+    DictionaryValue value;
+    DictionaryValue function_value;
+    value.Set("event_callback", function_value.DeepCopy());
+    OptionalFunctionType out;
+    ASSERT_TRUE(OptionalFunctionType::Populate(value, &out));
+    EXPECT_TRUE(out.event_callback.get());
+  }
+  {
+    DictionaryValue value;
+    DictionaryValue function_value;
+    value.Set("event_callback", function_value.DeepCopy());
+    OptionalFunctionType out;
+    ASSERT_TRUE(OptionalFunctionType::Populate(value, &out));
+    EXPECT_TRUE(out.event_callback.get());
+  }
+}
+
+TEST(JsonSchemaCompilerFunctionsAsParametersTest, OptionalFunctionToValue) {
+  {
+    DictionaryValue empty_value;
+    OptionalFunctionType out;
+    ASSERT_TRUE(OptionalFunctionType::Populate(empty_value, &out));
+    // event_callback should not be set in the return from ToValue.
+    EXPECT_TRUE(empty_value.Equals(out.ToValue().get()));
+  }
+  {
+    DictionaryValue value;
+    DictionaryValue function_value;
+    value.Set("event_callback", function_value.DeepCopy());
+
+    OptionalFunctionType out;
+    ASSERT_TRUE(OptionalFunctionType::Populate(value, &out));
+    EXPECT_TRUE(value.Equals(out.ToValue().get()));
+  }
+}