ArduinoJson/test/JsonArray_Container_Tests.cpp

#include <gtest/gtest.h>
#include <ArduinoJson/StaticJsonBuffer.h>
#include <ArduinoJson/JsonValue.h>

class JsonArray_Container_Tests : public ::testing::Test
{
protected:
    virtual void SetUp()
    {
        array = json.createArray();
    }

    void nodeCountMustBe(int expected)
    {
        EXPECT_EQ(expected, json.size());
    }

    template<typename T>
    void firstElementMustBe(T expected)
    {
        elementAtIndexMustBe(0, expected);
    }

    template<typename T>
    void secondElementMustBe(T expected)
    {
        elementAtIndexMustBe(1, expected);
    }

    void sizeMustBe(int expected)
    {
        EXPECT_EQ(expected, array.size());
    }

    StaticJsonBuffer<42> json;
    JsonArray array;

private:
    template<typename T>
    void elementAtIndexMustBe(int index, T expected)
    {
        EXPECT_EQ(expected, static_cast<T>(array[index]));
    }
};

TEST_F(JsonArray_Container_Tests, InitialSizeIsZero)
{
    sizeMustBe(0);
    nodeCountMustBe(1);
}

TEST_F(JsonArray_Container_Tests, Grow_WhenValuesAreAdded)
{    
    array.add("hello");
    sizeMustBe(1);
    nodeCountMustBe(2);

    array.add("world");
    sizeMustBe(2);
    nodeCountMustBe(3);    
}

TEST_F(JsonArray_Container_Tests, CanStoreIntegers)
{
    array.add(123);
    array.add(456);

    firstElementMustBe(123);
    secondElementMustBe(456);
    nodeCountMustBe(3);
}

TEST_F(JsonArray_Container_Tests, CanStoreDoubles)
{
    array.add(123.45);
    array.add(456.78);

    firstElementMustBe(123.45);
    secondElementMustBe(456.78);
    nodeCountMustBe(3);
}

TEST_F(JsonArray_Container_Tests, CanStoreBooleans)
{
    array.add(true);
    array.add(false);
    
    firstElementMustBe(true);
    secondElementMustBe(false);
    nodeCountMustBe(3);
}

TEST_F(JsonArray_Container_Tests, CanStoreStrings)
{
    const char* firstString = "h3110";
    const char* secondString = "w0r1d";

    array.add(firstString);
    array.add(secondString);

    firstElementMustBe(firstString);
    secondElementMustBe(secondString);
    nodeCountMustBe(3);
}

TEST_F(JsonArray_Container_Tests, CanStoreNestedArrays)
{
    JsonArray innerarray1 = json.createArray();
    JsonArray innerarray2 = json.createArray();

    array.add(innerarray1);
    array.add(innerarray2);

    firstElementMustBe(innerarray1);
    secondElementMustBe(innerarray2);
    nodeCountMustBe(1 + 3 + 3);
}

TEST_F(JsonArray_Container_Tests, CanStoreNestedObjects)
{
    JsonObject innerObject1 = json.createObject();
    JsonObject innerObject2 = json.createObject();

    array.add(innerObject1);
    array.add(innerObject2);

    firstElementMustBe(innerObject1);
    secondElementMustBe(innerObject2);
    nodeCountMustBe(1 + 3 + 3);
}

TEST_F(JsonArray_Container_Tests, CanCreateNestedArrays)
{
    JsonArray innerarray1 = array.createNestedArray();
    JsonArray innerarray2 = array.createNestedArray();

    firstElementMustBe(innerarray1);
    secondElementMustBe(innerarray2);
    nodeCountMustBe(1 + 1 + 1);
}

TEST_F(JsonArray_Container_Tests, CanCreateNestedObjects)
{
    JsonObject innerObject1 = array.createNestedObject();
    JsonObject innerObject2 = array.createNestedObject();

    firstElementMustBe(innerObject1);
    secondElementMustBe(innerObject2);
    nodeCountMustBe(3);
}