#include "graphics/Bitmap.hpp"

#include <gtest/gtest.h>

#include <optional>

TEST(basic_test, Bitmap_createBitmapWithCertainSize_yieldsSpecifiedSize) {
    auto bm     = ptprnt::graphics::Bitmap<ptprnt::graphics::ALPHA8>(16, 8);
    auto width  = bm.getWidth();
    auto height = bm.getHeight();
    ASSERT_EQ(width, 16);
    ASSERT_EQ(height, 8);
}

TEST(basic_test, Bitmap_getBitmapLineOutsideOfImage_yieldsNullopt) {
    auto bm = ptprnt::graphics::Bitmap<ptprnt::graphics::ALPHA8>(16, 8);
    // line 8 is out of bounds, count begins with 0
    auto outOfBoundsLine = bm.getLine(8);
    ASSERT_EQ(std::nullopt, outOfBoundsLine);
}

TEST(basic_test, Bitmap_getBitmapLineInsideOfImage_yieldsValidLineSize) {
    auto bm   = ptprnt::graphics::Bitmap<ptprnt::graphics::ALPHA8>(16, 8);
    auto line = bm.getLine(7);
    if (!line) {
        FAIL() << "Returned line is invalid";
    }
    auto lineSize = line->size();
    ASSERT_EQ(16, lineSize);
}

TEST(basic_test, Bitmap_getBitmapRowOutsideOfImage_yieldsNullopt) {
    auto bm = ptprnt::graphics::Bitmap<ptprnt::graphics::ALPHA8>(16, 8);
    // row 16 is out of bounds, count begins with 0
    auto outOfBoundsRow = bm.getRow(16);
    ASSERT_EQ(std::nullopt, outOfBoundsRow);
}

TEST(basic_test, Bitmap_getBitmapRowInsideOfImage_yieldsValidRowSize) {
    auto bm  = ptprnt::graphics::Bitmap<ptprnt::graphics::ALPHA8>(16, 8);
    auto row = bm.getRow(15);
    if (!row) {
        FAIL() << "Returned Row is invalid";
    }
    auto rowSize = row->size();
    ASSERT_EQ(8, rowSize);
}