Organized test files in subfolders

test/JsonObject/basics.cpp

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+// Copyright Benoit Blanchon 2014-2017
+// MIT License
+//
+// Arduino JSON library
+// https://bblanchon.github.io/ArduinoJson/
+// If you like this project, please add a star!
+
+#include <ArduinoJson.h>
+#include <gtest/gtest.h>
+
+#define TEST_(name) TEST(JsonObject_Basic_Tests, name)
+
+TEST_(InitialSizeIsZero) {
+  DynamicJsonBuffer _jsonBuffer;
+  JsonObject& _object = _jsonBuffer.createObject();
+
+  EXPECT_EQ(0, _object.size());
+}
+
+TEST_(SuccessIsTrue) {
+  DynamicJsonBuffer _jsonBuffer;
+  JsonObject& _object = _jsonBuffer.createObject();
+
+  EXPECT_TRUE(_object.success());
+}

test/JsonObject/containsKey.cpp

@@ -0,0 +1,39 @@
+// Copyright Benoit Blanchon 2014-2017
+// MIT License
+//
+// Arduino JSON library
+// https://bblanchon.github.io/ArduinoJson/
+// If you like this project, please add a star!
+
+#include <ArduinoJson.h>
+#include <gtest/gtest.h>
+
+#define TEST_(name) TEST(JsonObject_Basic_Tests, name)
+
+TEST_(ContainsKeyReturnsFalseForNonExistingKey) {
+  DynamicJsonBuffer _jsonBuffer;
+  JsonObject& _object = _jsonBuffer.createObject();
+
+  _object.set("hello", 42);
+
+  EXPECT_FALSE(_object.containsKey("world"));
+}
+
+TEST_(ContainsKeyReturnsTrueForDefinedValue) {
+  DynamicJsonBuffer _jsonBuffer;
+  JsonObject& _object = _jsonBuffer.createObject();
+
+  _object.set("hello", 42);
+
+  EXPECT_TRUE(_object.containsKey("hello"));
+}
+
+TEST_(ContainsKeyReturnsFalseAfterRemove) {
+  DynamicJsonBuffer _jsonBuffer;
+  JsonObject& _object = _jsonBuffer.createObject();
+
+  _object.set("hello", 42);
+  _object.remove("hello");
+
+  EXPECT_FALSE(_object.containsKey("hello"));
+}

test/JsonObject/get.cpp

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+// Copyright Benoit Blanchon 2014-2017
+// MIT License
+//
+// Arduino JSON library
+// https://bblanchon.github.io/ArduinoJson/
+// If you like this project, please add a star!
+
+#include <ArduinoJson.h>
+#include <gtest/gtest.h>
+
+class JsonObject_Get_Tests : public ::testing::Test {
+ public:
+  JsonObject_Get_Tests() : _object(_jsonBuffer.createObject()) {}
+
+ protected:
+  DynamicJsonBuffer _jsonBuffer;
+  JsonObject& _object;
+};
+
+#define TEST_(name) TEST_F(JsonObject_Get_Tests, name)
+
+TEST_(GetConstCharPointer_GivenStringLiteral) {
+  _object.set("hello", "world");
+  const char* value = _object.get<const char*>("hello");
+  EXPECT_STREQ("world", value);
+}

test/JsonObject/invalid.cpp

@@ -0,0 +1,33 @@
+// Copyright Benoit Blanchon 2014-2017
+// MIT License
+//
+// Arduino JSON library
+// https://bblanchon.github.io/ArduinoJson/
+// If you like this project, please add a star!
+
+#include <ArduinoJson.h>
+#include <gtest/gtest.h>
+
+TEST(JsonObject_Invalid_Tests, SubscriptFails) {
+  ASSERT_FALSE(JsonObject::invalid()["key"].success());
+}
+
+TEST(JsonObject_Invalid_Tests, AddFails) {
+  JsonObject& object = JsonObject::invalid();
+  object.set("hello", "world");
+  ASSERT_EQ(0, object.size());
+}
+
+TEST(JsonObject_Invalid_Tests, CreateNestedArrayFails) {
+  ASSERT_FALSE(JsonObject::invalid().createNestedArray("hello").success());
+}
+
+TEST(JsonObject_Invalid_Tests, CreateNestedObjectFails) {
+  ASSERT_FALSE(JsonObject::invalid().createNestedObject("world").success());
+}
+
+TEST(JsonObject_Invalid_Tests, PrintToWritesBraces) {
+  char buffer[32];
+  JsonObject::invalid().printTo(buffer, sizeof(buffer));
+  ASSERT_STREQ("{}", buffer);
+}

test/JsonObject/iterator.cpp

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+// Copyright Benoit Blanchon 2014-2017
+// MIT License
+//
+// Arduino JSON library
+// https://bblanchon.github.io/ArduinoJson/
+// If you like this project, please add a star!
+
+#include <ArduinoJson.h>
+#include <gtest/gtest.h>
+
+class JsonObject_Iterator_Test : public testing::Test {
+ public:
+  JsonObject_Iterator_Test() : _object(_buffer.createObject()) {
+    _object["ab"] = 12;
+    _object["cd"] = 34;
+  }
+
+ protected:
+  StaticJsonBuffer<JSON_OBJECT_SIZE(2)> _buffer;
+  JsonObject& _object;
+};
+
+TEST_F(JsonObject_Iterator_Test, NonConstIterator) {
+  JsonObject::iterator it = _object.begin();
+  ASSERT_NE(_object.end(), it);
+  EXPECT_STREQ("ab", it->key);
+  EXPECT_EQ(12, it->value);
+  it->key = "a.b";
+  it->value = 1.2;
+  ++it;
+  ASSERT_NE(_object.end(), it);
+  EXPECT_STREQ("cd", it->key);
+  EXPECT_EQ(34, it->value);
+  it->key = "c.d";
+  it->value = 3.4;
+  ++it;
+  ASSERT_EQ(_object.end(), it);
+
+  ASSERT_EQ(2, _object.size());
+  EXPECT_EQ(1.2, _object["a.b"]);
+  EXPECT_EQ(3.4, _object["c.d"]);
+}
+
+TEST_F(JsonObject_Iterator_Test, ConstIterator) {
+  const JsonObject& const_object = _object;
+  JsonObject::const_iterator it = const_object.begin();
+
+  ASSERT_NE(const_object.end(), it);
+  EXPECT_STREQ("ab", it->key);
+  EXPECT_EQ(12, it->value);
+  ++it;
+  ASSERT_NE(const_object.end(), it);
+  EXPECT_STREQ("cd", it->key);
+  EXPECT_EQ(34, it->value);
+  ++it;
+  ASSERT_EQ(const_object.end(), it);
+}

test/JsonObject/prettyPrintTo.cpp

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+// Copyright Benoit Blanchon 2014-2017
+// MIT License
+//
+// Arduino JSON library
+// https://bblanchon.github.io/ArduinoJson/
+// If you like this project, please add a star!
+
+#include <ArduinoJson.h>
+#include <gtest/gtest.h>
+
+class JsonObject_PrettyPrintTo_Tests : public testing::Test {
+ public:
+  JsonObject_PrettyPrintTo_Tests() : _object(_jsonBuffer.createObject()) {}
+
+ protected:
+  DynamicJsonBuffer _jsonBuffer;
+  JsonObject &_object;
+
+  void outputMustBe(const char *expected) {
+    char buffer[256];
+
+    size_t actualLen = _object.prettyPrintTo(buffer);
+    size_t measuredLen = _object.measurePrettyLength();
+
+    EXPECT_STREQ(expected, buffer);
+    EXPECT_EQ(strlen(expected), actualLen);
+    EXPECT_EQ(strlen(expected), measuredLen);
+  }
+};
+
+TEST_F(JsonObject_PrettyPrintTo_Tests, EmptyObject) {
+  outputMustBe("{}");
+}
+
+TEST_F(JsonObject_PrettyPrintTo_Tests, OneMember) {
+  _object["key"] = "value";
+
+  outputMustBe(
+      "{\r\n"
+      "  \"key\": \"value\"\r\n"
+      "}");
+}
+
+TEST_F(JsonObject_PrettyPrintTo_Tests, TwoMembers) {
+  _object["key1"] = "value1";
+  _object["key2"] = "value2";
+
+  outputMustBe(
+      "{\r\n"
+      "  \"key1\": \"value1\",\r\n"
+      "  \"key2\": \"value2\"\r\n"
+      "}");
+}
+
+TEST_F(JsonObject_PrettyPrintTo_Tests, EmptyNestedContainers) {
+  _object.createNestedObject("key1");
+  _object.createNestedArray("key2");
+
+  outputMustBe(
+      "{\r\n"
+      "  \"key1\": {},\r\n"
+      "  \"key2\": []\r\n"
+      "}");
+}
+
+TEST_F(JsonObject_PrettyPrintTo_Tests, NestedContainers) {
+  JsonObject &nested1 = _object.createNestedObject("key1");
+  nested1["a"] = 1;
+
+  JsonArray &nested2 = _object.createNestedArray("key2");
+  nested2.add(2);
+
+  outputMustBe(
+      "{\r\n"
+      "  \"key1\": {\r\n"
+      "    \"a\": 1\r\n"
+      "  },\r\n"
+      "  \"key2\": [\r\n"
+      "    2\r\n"
+      "  ]\r\n"
+      "}");
+}

test/JsonObject/printTo.cpp

@@ -0,0 +1,123 @@
+// Copyright Benoit Blanchon 2014-2017
+// MIT License
+//
+// Arduino JSON library
+// https://bblanchon.github.io/ArduinoJson/
+// If you like this project, please add a star!
+
+#include <ArduinoJson.h>
+#include <gtest/gtest.h>
+
+class JsonObject_PrintTo_Tests : public testing::Test {
+ public:
+  JsonObject_PrintTo_Tests() : _object(_jsonBuffer.createObject()) {}
+
+ protected:
+  void outputMustBe(const char *expected) {
+    char actual[256];
+    size_t actualLen = _object.printTo(actual);
+    size_t measuredLen = _object.measureLength();
+
+    EXPECT_STREQ(expected, actual);
+    EXPECT_EQ(strlen(expected), actualLen);
+    EXPECT_EQ(strlen(expected), measuredLen);
+  }
+
+  DynamicJsonBuffer _jsonBuffer;
+  JsonObject &_object;
+};
+
+TEST_F(JsonObject_PrintTo_Tests, EmptyObject) {
+  outputMustBe("{}");
+}
+
+TEST_F(JsonObject_PrintTo_Tests, TwoStrings) {
+  _object["key1"] = "value1";
+  _object.set("key2", "value2");
+
+  outputMustBe("{\"key1\":\"value1\",\"key2\":\"value2\"}");
+}
+
+TEST_F(JsonObject_PrintTo_Tests, RemoveFirst) {
+  _object["key1"] = "value1";
+  _object["key2"] = "value2";
+  _object.remove("key1");
+
+  outputMustBe("{\"key2\":\"value2\"}");
+}
+
+TEST_F(JsonObject_PrintTo_Tests, RemoveLast) {
+  _object["key1"] = "value1";
+  _object["key2"] = "value2";
+  _object.remove("key2");
+
+  outputMustBe("{\"key1\":\"value1\"}");
+}
+
+TEST_F(JsonObject_PrintTo_Tests, RemoveUnexistingKey) {
+  _object["key1"] = "value1";
+  _object["key2"] = "value2";
+  _object.remove("key3");
+
+  outputMustBe("{\"key1\":\"value1\",\"key2\":\"value2\"}");
+}
+
+TEST_F(JsonObject_PrintTo_Tests, ReplaceExistingKey) {
+  _object["key"] = "value1";
+  _object["key"] = "value2";
+
+  outputMustBe("{\"key\":\"value2\"}");
+}
+
+TEST_F(JsonObject_PrintTo_Tests, TwoIntegers) {
+  _object["a"] = 1;
+  _object.set("b", 2);
+  outputMustBe("{\"a\":1,\"b\":2}");
+}
+
+TEST_F(JsonObject_PrintTo_Tests, RawJson) {
+  _object["a"] = RawJson("[1,2]");
+  _object.set("b", RawJson("[4,5]"));
+  outputMustBe("{\"a\":[1,2],\"b\":[4,5]}");
+}
+
+TEST_F(JsonObject_PrintTo_Tests, TwoDoublesFourDigits) {
+  _object["a"] = double_with_n_digits(3.14159265358979323846, 4);
+  _object.set("b", 2.71828182845904523536, 4);
+  _object.set("c", double_with_n_digits(3.14159265358979323846, 3));
+  outputMustBe("{\"a\":3.1416,\"b\":2.7183,\"c\":3.142}");
+}
+
+TEST_F(JsonObject_PrintTo_Tests, TwoDoubleDefaultDigits) {
+  _object["a"] = 3.14159265358979323846;
+  _object.set("b", 2.71828182845904523536);
+  outputMustBe("{\"a\":3.14,\"b\":2.72}");
+}
+
+TEST_F(JsonObject_PrintTo_Tests, TwoNull) {
+  _object["a"] = static_cast<char *>(0);
+  _object.set("b", static_cast<char *>(0));
+  outputMustBe("{\"a\":null,\"b\":null}");
+}
+
+TEST_F(JsonObject_PrintTo_Tests, TwoBooleans) {
+  _object["a"] = true;
+  _object.set("b", false);
+  outputMustBe("{\"a\":true,\"b\":false}");
+}
+
+TEST_F(JsonObject_PrintTo_Tests, ThreeNestedArrays) {
+  _object.createNestedArray("a");
+  _object["b"] = _jsonBuffer.createArray();
+  _object.set("c", _jsonBuffer.createArray());
+
+  outputMustBe("{\"a\":[],\"b\":[],\"c\":[]}");
+}
+
+TEST_F(JsonObject_PrintTo_Tests, ThreeNestedObjects) {
+  _object.createNestedObject("a");
+  _object["b"] = _jsonBuffer.createObject();
+  _object.set("c", _jsonBuffer.createObject());
+
+  outputMustBe("{\"a\":{},\"b\":{},\"c\":{}}");
+}

test/JsonObject/remove.cpp

@@ -0,0 +1,31 @@
+// Copyright Benoit Blanchon 2014-2017
+// MIT License
+//
+// Arduino JSON library
+// https://bblanchon.github.io/ArduinoJson/
+// If you like this project, please add a star!
+
+#include <ArduinoJson.h>
+#include <gtest/gtest.h>
+
+#define TEST_(name) TEST(JsonObject_Remove_Tests, name)
+
+TEST_(SizeDecreased_WhenValuesAreRemoved) {
+  DynamicJsonBuffer _jsonBuffer;
+  JsonObject& _object = _jsonBuffer.createObject();
+  _object["hello"] = 1;
+
+  _object.remove("hello");
+
+  EXPECT_EQ(0, _object.size());
+}
+
+TEST_(SizeUntouched_WhenRemoveIsCalledWithAWrongKey) {
+  DynamicJsonBuffer _jsonBuffer;
+  JsonObject& _object = _jsonBuffer.createObject();
+  _object["hello"] = 1;
+
+  _object.remove("world");
+
+  EXPECT_EQ(1, _object.size());
+}

test/JsonObject/set.cpp

@@ -0,0 +1,127 @@
+// Copyright Benoit Blanchon 2014-2017
+// MIT License
+//
+// Arduino JSON library
+// https://bblanchon.github.io/ArduinoJson/
+// If you like this project, please add a star!
+
+#include <ArduinoJson.h>
+#include <gtest/gtest.h>
+
+class JsonObject_Set_Tests : public ::testing::Test {
+ public:
+  JsonObject_Set_Tests() : _object(_jsonBuffer.createObject()) {}
+
+ protected:
+  DynamicJsonBuffer _jsonBuffer;
+  JsonObject& _object;
+};
+
+#define TEST_(name) TEST_F(JsonObject_Set_Tests, name)
+
+TEST_(SizeIncreased_WhenValuesAreAdded) {
+  _object.set("hello", 42);
+  EXPECT_EQ(1, _object.size());
+}
+
+TEST_(SizeUntouched_WhenSameValueIsAdded) {
+  _object["hello"] = 1;
+  _object["hello"] = 2;
+  EXPECT_EQ(1, _object.size());
+}
+
+TEST_(StoreInteger) {
+  _object.set("hello", 123);
+
+  EXPECT_EQ(123, _object["hello"].as<int>());
+  EXPECT_TRUE(_object["hello"].is<int>());
+  EXPECT_FALSE(_object["hello"].is<double>());
+}
+
+TEST_(StoreDouble) {
+  _object.set("hello", 123.45);
+
+  EXPECT_EQ(123.45, _object["hello"].as<double>());
+  EXPECT_TRUE(_object["hello"].is<double>());
+  EXPECT_FALSE(_object["hello"].is<long>());
+}
+
+TEST_(StoreDoubleWithDigits) {
+  _object.set("hello", 123.45, 2);
+
+  EXPECT_EQ(123.45, _object["hello"].as<double>());
+  EXPECT_TRUE(_object["hello"].is<double>());
+  EXPECT_FALSE(_object["hello"].is<long>());
+}
+
+TEST_(StoreBoolean) {
+  _object.set("hello", true);
+
+  EXPECT_TRUE(_object["hello"].as<bool>());
+  EXPECT_TRUE(_object["hello"].is<bool>());
+  EXPECT_FALSE(_object["hello"].is<long>());
+}
+
+TEST_(StoreString) {
+  _object.set("hello", "h3110");
+
+  EXPECT_STREQ("h3110", _object["hello"].as<const char*>());
+  EXPECT_TRUE(_object["hello"].is<const char*>());
+  EXPECT_FALSE(_object["hello"].is<long>());
+}
+
+TEST_(StoreArray) {
+  JsonArray& arr = _jsonBuffer.createArray();
+
+  _object.set("hello", arr);
+
+  EXPECT_EQ(&arr, &_object["hello"].as<JsonArray>());
+  EXPECT_TRUE(_object["hello"].is<JsonArray&>());
+  EXPECT_FALSE(_object["hello"].is<JsonObject&>());
+}
+
+TEST_(StoreObject) {
+  JsonObject& obj = _jsonBuffer.createObject();
+
+  _object.set("hello", obj);
+
+  EXPECT_EQ(&obj, &_object["hello"].as<JsonObject>());
+  EXPECT_TRUE(_object["hello"].is<JsonObject&>());
+  EXPECT_FALSE(_object["hello"].is<JsonArray&>());
+}
+
+TEST_(StoreArraySubscript) {
+  JsonArray& arr = _jsonBuffer.createArray();
+  arr.add(42);
+
+  _object.set("a", arr[0]);
+
+  EXPECT_EQ(42, _object["a"]);
+}
+
+TEST_(StoreObjectSubscript) {
+  JsonObject& obj = _jsonBuffer.createObject();
+  obj.set("x", 42);
+
+  _object.set("a", obj["x"]);
+
+  EXPECT_EQ(42, _object["a"]);
+}
+
+TEST_(ShouldReturnTrue_WhenAllocationSucceeds) {
+  StaticJsonBuffer<JSON_OBJECT_SIZE(1) + 15> jsonBuffer;
+  JsonObject& obj = jsonBuffer.createObject();
+
+  bool result = obj.set(std::string("hello"), std::string("world"));
+
+  ASSERT_TRUE(result);
+}
+
+TEST_(ShouldReturnFalse_WhenAllocationFails) {
+  StaticJsonBuffer<JSON_OBJECT_SIZE(1) + 10> jsonBuffer;
+  JsonObject& obj = jsonBuffer.createObject();
+
+  bool result = obj.set(std::string("hello"), std::string("world"));
+
+  ASSERT_FALSE(result);
+}

test/JsonObject/subscript.cpp

@@ -0,0 +1,137 @@
+// Copyright Benoit Blanchon 2014-2017
+// MIT License
+//
+// Arduino JSON library
+// https://bblanchon.github.io/ArduinoJson/
+// If you like this project, please add a star!
+
+#include <ArduinoJson.h>
+#include <gtest/gtest.h>
+
+class JsonObject_Subscript_Tests : public ::testing::Test {
+ public:
+  JsonObject_Subscript_Tests() : _object(_jsonBuffer.createObject()) {}
+
+ protected:
+  DynamicJsonBuffer _jsonBuffer;
+  JsonObject& _object;
+};
+
+#define TEST_(name) TEST_F(JsonObject_Subscript_Tests, name)
+
+TEST_(SizeIncreased_WhenValuesAreAdded) {
+  _object["hello"] = 1;
+  EXPECT_EQ(1, _object.size());
+}
+
+TEST_(SizeUntouched_WhenSameValueIsAdded) {
+  _object["hello"] = 1;
+  _object["hello"] = 2;
+  EXPECT_EQ(1, _object.size());
+}
+
+TEST_(StoreInteger) {
+  _object["hello"] = 123;
+
+  EXPECT_EQ(123, _object["hello"].as<int>());
+  EXPECT_TRUE(_object["hello"].is<int>());
+  EXPECT_FALSE(_object["hello"].is<double>());
+}
+
+TEST_(StoreVolatileInteger) {  // issue #415
+  volatile int i = 123;
+  _object["hello"] = i;
+
+  EXPECT_EQ(123, _object["hello"].as<int>());
+  EXPECT_TRUE(_object["hello"].is<int>());
+  EXPECT_FALSE(_object["hello"].is<double>());
+}
+
+TEST_(StoreDouble) {
+  _object["hello"] = 123.45;
+
+  EXPECT_TRUE(_object["hello"].is<double>());
+  EXPECT_FALSE(_object["hello"].is<long>());
+  EXPECT_EQ(123.45, _object["hello"].as<double>());
+}
+
+TEST_(StoreDoubleWithDigits) {
+  _object["hello"].set(123.45, 2);
+
+  EXPECT_TRUE(_object["hello"].is<double>());
+  EXPECT_FALSE(_object["hello"].is<long>());
+  EXPECT_EQ(123.45, _object["hello"].as<double>());
+}
+
+TEST_(StoreBoolean) {
+  _object["hello"] = true;
+
+  EXPECT_TRUE(_object["hello"].is<bool>());
+  EXPECT_FALSE(_object["hello"].is<long>());
+  EXPECT_TRUE(_object["hello"].as<bool>());
+}
+
+TEST_(StoreString) {
+  _object["hello"] = "h3110";
+
+  EXPECT_TRUE(_object["hello"].is<const char*>());
+  EXPECT_FALSE(_object["hello"].is<long>());
+  EXPECT_STREQ("h3110", _object["hello"].as<const char*>());
+  EXPECT_STREQ("h3110", _object["hello"].as<char*>());  // <- short hand
+}
+
+TEST_(StoreArray) {
+  JsonArray& arr = _jsonBuffer.createArray();
+
+  _object["hello"] = arr;
+
+  EXPECT_EQ(&arr, &_object["hello"].as<JsonArray&>());
+  EXPECT_EQ(&arr, &_object["hello"].as<JsonArray>());  // <- short hand
+  EXPECT_EQ(&arr, &_object["hello"].as<const JsonArray&>());
+  EXPECT_EQ(&arr, &_object["hello"].as<const JsonArray>());  // <- short hand
+  EXPECT_TRUE(_object["hello"].is<JsonArray&>());
+  EXPECT_TRUE(_object["hello"].is<JsonArray>());
+  EXPECT_TRUE(_object["hello"].is<const JsonArray&>());
+  EXPECT_TRUE(_object["hello"].is<const JsonArray>());
+  EXPECT_FALSE(_object["hello"].is<JsonObject&>());
+}
+
+TEST_(StoreObject) {
+  JsonObject& obj = _jsonBuffer.createObject();
+
+  _object["hello"] = obj;
+
+  EXPECT_EQ(&obj, &_object["hello"].as<JsonObject&>());
+  EXPECT_EQ(&obj, &_object["hello"].as<JsonObject>());  // <- short hand
+  EXPECT_EQ(&obj, &_object["hello"].as<const JsonObject&>());
+  EXPECT_EQ(&obj, &_object["hello"].as<const JsonObject>());  // <- short hand
+  EXPECT_TRUE(_object["hello"].is<JsonObject&>());
+  EXPECT_TRUE(_object["hello"].is<JsonObject>());
+  EXPECT_TRUE(_object["hello"].is<const JsonObject&>());
+  EXPECT_TRUE(_object["hello"].is<const JsonObject>());
+  EXPECT_FALSE(_object["hello"].is<JsonArray&>());
+}
+
+TEST_(StoreArraySubscript) {
+  JsonArray& arr = _jsonBuffer.createArray();
+  arr.add(42);
+
+  _object["a"] = arr[0];
+
+  EXPECT_EQ(42, _object["a"]);
+}
+
+TEST_(StoreObjectSubscript) {
+  JsonObject& obj = _jsonBuffer.createObject();
+  obj.set("x", 42);
+
+  _object["a"] = obj["x"];
+
+  EXPECT_EQ(42, _object["a"]);
+}
+
+TEST_(KeyAsCharArray) {  // issue #423
+  char key[] = "hello";
+  _object[key] = 42;
+  EXPECT_EQ(42, _object[key]);
+}