ArduinoJson/test/JsonParser_Array_Tests.cpp

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

using namespace ArduinoJson;

class JsonParser_Array_Tests : public testing::Test {
 protected:
  void whenInputIs(const char *json) {
    strcpy(_jsonString, json);
    _array = _jsonBuffer.parseArray(_jsonString);
  }

  void parseMustSucceed() { EXPECT_TRUE(_array.success()); }

  void parseMustFail() {
    EXPECT_FALSE(_array.success());
    EXPECT_EQ(0, _array.size());
  }

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

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

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

  template <typename T>
  void elementAtIndexMustBe(int index, T expected) {
    EXPECT_EQ(expected, _array[index].as<T>());
  }

  void elementAtIndexMustBe(int index, const char *expected) {
    EXPECT_STREQ(expected, _array[index].as<const char *>());
  }

  StaticJsonBuffer<42> _jsonBuffer;
  JsonArray _array;
  char _jsonString[256];
};

TEST_F(JsonParser_Array_Tests, EmptyArray) {
  whenInputIs("[]");

  parseMustSucceed();
  sizeMustBe(0);
}

TEST_F(JsonParser_Array_Tests, ArrayWithNoEnd) {
  whenInputIs("[");

  parseMustFail();
}

TEST_F(JsonParser_Array_Tests, EmptyArrayWithLeadingSpaces) {
  whenInputIs("  []");

  parseMustSucceed();
  sizeMustBe(0);
}

TEST_F(JsonParser_Array_Tests, Garbage) {
  whenInputIs("%*$£¤");

  parseMustFail();
}

TEST_F(JsonParser_Array_Tests, OneInteger) {
  whenInputIs("[42]");

  parseMustSucceed();
  sizeMustBe(1);
  firstElementMustBe(42);
}

TEST_F(JsonParser_Array_Tests, OneIntegerWithSpacesBefore) {
  whenInputIs("[ \t\r\n42]");

  parseMustSucceed();
  sizeMustBe(1);
  firstElementMustBe(42);
}

TEST_F(JsonParser_Array_Tests, OneIntegerWithSpaceAfter) {
  whenInputIs("[42 \t\r\n]");

  parseMustSucceed();
  sizeMustBe(1);
  firstElementMustBe(42);
}

TEST_F(JsonParser_Array_Tests, TwoIntegers) {
  whenInputIs("[42,84]");

  parseMustSucceed();
  sizeMustBe(2);
  firstElementMustBe(42);
  secondElementMustBe(84);
}

TEST_F(JsonParser_Array_Tests, TwoDoubles) {
  whenInputIs("[4.2,8.4]");

  parseMustSucceed();
  sizeMustBe(2);
  firstElementMustBe(4.2);
  secondElementMustBe(8.4);
}

TEST_F(JsonParser_Array_Tests, TwoBooleans) {
  whenInputIs("[true,false]");

  parseMustSucceed();
  sizeMustBe(2);
  firstElementMustBe(true);
  secondElementMustBe(false);
}

TEST_F(JsonParser_Array_Tests, TwoNulls) {
  const char *const nullCharPtr = 0;

  whenInputIs("[null,null]");

  parseMustSucceed();
  sizeMustBe(2);
  firstElementMustBe(nullCharPtr);
  secondElementMustBe(nullCharPtr);
}

TEST_F(JsonParser_Array_Tests, TwoStrings) {
  whenInputIs("[\"hello\",\"world\"]");

  parseMustSucceed();
  sizeMustBe(2);
  firstElementMustBe("hello");
  secondElementMustBe("world");
}