Added test of a failing JsonBuffer::createObject()

test/StaticJsonBuffer_Object_Tests.cpp

@@ -0,0 +1,94 @@
+// Copyright Benoit Blanchon 2014
+// MIT License
+//
+// Arduino JSON library
+// https://github.com/bblanchon/ArduinoJson
+
+#include <gtest/gtest.h>
+#include <ArduinoJson/JsonObject.hpp>
+#include <ArduinoJson/StaticJsonBuffer.hpp>
+
+using namespace ArduinoJson;
+
+const size_t SIZEOF_ONE_OBJECT = JSON_OBJECT_SIZE(0);
+const size_t SIZEOF_TWO_OBJECTS = 2 * SIZEOF_ONE_OBJECT;
+const size_t SIZEOF_OBJECT_WITH_ONE_VALUE = JSON_OBJECT_SIZE(1);
+const size_t SIZEOF_OBJECT_WITH_TWO_VALUES = JSON_OBJECT_SIZE(2);
+
+TEST(StaticJsonBuffer_Object_Tests, CapacityMatchTemplateParameter) {
+  StaticJsonBuffer<42> json;
+
+  EXPECT_EQ(42, json.capacity());
+}
+
+TEST(StaticJsonBuffer_Object_Tests, InitialSizeIsZero) {
+  StaticJsonBuffer<42> json;
+
+  EXPECT_EQ(0, json.size());
+}
+
+TEST(StaticJsonBuffer_Object_Tests,
+     WhenCreateObjectIsCalled_ThenSizeIsIncreasedSizeOfJsonObject) {
+  StaticJsonBuffer<SIZEOF_TWO_OBJECTS> json;
+
+  json.createObject();
+  json.createObject();
+  EXPECT_EQ(SIZEOF_TWO_OBJECTS, json.size());
+}
+
+TEST(StaticJsonBuffer_Object_Tests,
+     GivenBufferIsFull_WhenCreateObjectIsCalled_ThenSizeDoesNotChange) {
+  StaticJsonBuffer<SIZEOF_ONE_OBJECT> json;
+
+  json.createObject();
+  json.createObject();
+  EXPECT_EQ(SIZEOF_ONE_OBJECT, json.size());
+}
+
+TEST(StaticJsonBuffer_Object_Tests,
+     GivenEnoughSpace_WhenCreateObjectIsCalled_ThenSuccessIsTrue) {
+  StaticJsonBuffer<SIZEOF_ONE_OBJECT> json;
+
+  JsonObject &object = json.createObject();
+  EXPECT_TRUE(object.success());
+}
+
+TEST(StaticJsonBuffer_Object_Tests,
+     GivenNotEnoughSpace_WhenCreateObjectIsCalled_ThenSuccessIsFalse) {
+  StaticJsonBuffer<SIZEOF_ONE_OBJECT - 1> json;
+
+  JsonObject &object = json.createObject();
+  EXPECT_FALSE(object.success());
+}
+
+TEST(StaticJsonBuffer_Object_Tests,
+     WhenCreateObjectIsCalled_ThenAnEmptyJsonObjectIsReturned) {
+  StaticJsonBuffer<SIZEOF_ONE_OBJECT> json;
+
+  JsonObject &obj = json.createObject();
+
+  EXPECT_EQ(0, obj.size());
+}
+
+TEST(StaticJsonBuffer_Object_Tests,
+     GivenAJsonObject_WhenValuesAreAdded_ThenSizeIsIncreasedAccordingly) {
+  StaticJsonBuffer<SIZEOF_OBJECT_WITH_TWO_VALUES> json;
+
+  JsonObject &obj = json.createObject();
+  obj["hello"];
+  obj["world"];
+
+  EXPECT_EQ(SIZEOF_OBJECT_WITH_TWO_VALUES, json.size());
+}
+
+TEST(
+    StaticJsonBuffer_Object_Tests,
+    GivenAJsonObject_WhenSameValuesAreAddedTwice_ThenSizeIsOnlyIncreasedByTwo) {
+  StaticJsonBuffer<SIZEOF_OBJECT_WITH_TWO_VALUES> json;
+
+  JsonObject &obj = json.createObject();
+  obj["hello"];
+  obj["hello"];
+
+  EXPECT_EQ(SIZEOF_OBJECT_WITH_ONE_VALUE, json.size());
+}