utc: testing loading and saving .tvg

Added tests of loading and saving .tvg.
Created testSavers.cpp. Created files tag.tvg and test.tvg. Minor change
in tag.svg.

test/images/tag.svg

@@ -20,8 +20,8 @@
 		<polyline fill="none" stroke-width="10" 
             points="0,0 1000,0 1000,1000 0,1000" />
 		<line x1="0" y1="0" x2="1000" y2="0" stroke="" />
-		<path d="M647.5 800C692.5 786 730 786 775 800S857.5 814 902.5 800" stroke="#222f35" stroke-width="2" fill="transparent"/>
+		<path d="M647.5 800C692.5 786 730 786 775 800S857.5 814 902.5 800" stroke="#222f35" stroke="url(#grad1)" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" fill="white"/>
-		<path d="M647.5 800Q711.25 786 775 800T902.5 800" stroke="#222f35" stroke-width="2" fill="transparent"/>
+		<path d="M647.5 800Q711.25 786 775 800T902.5 800" stroke="#222f35" stroke="url(#grad2)" stroke-width="2" stroke-dasharray="20 10" stroke-linecap="square" stroke-linejoin="bevel" fill="white"/>
 	</g>
 	<image href="data:image/svg+xml;base64,PHN2ZyB2aWV3Qm94PSIwIDAgNTAgNTAiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PGNpcmNsZSBmaWxsPSIjMjIyZjM1IiBjeD0iNTAlIiBjeT0iNTAlIiByPSI1MCUiLz48L3N2Zz4=" height="50" width="50" x="650" y="875" />
 	<image href="data:image/svg+xml;utf8,%3Csvg viewBox='0 0 50 50' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle fill='%23222f35' cx='50%25' cy='50%25' r='50%25'/%3E%3C/svg%3E" height="50" width="50" x="725" y="875" />

test/meson.build

@@ -4,6 +4,7 @@ test_file = [
     'testMain.cpp',
     'testPaint.cpp',
     'testPicture.cpp',
+    'testSavers.cpp',
     'testScene.cpp',
     'testShape.cpp',
     'testSwCanvas.cpp',

test/testPicture.cpp

@@ -180,6 +180,50 @@ TEST_CASE("Load JPG file from data", "[tvgPicture]")
     free(data);
 }
 
+TEST_CASE("Load TVG file from path", "[tvgPicture]")
+{
+    auto picture = Picture::gen();
+    REQUIRE(picture);
+
+    //Invalid file
+    REQUIRE(picture->load("invalid.tvg") == Result::InvalidArguments);
+
+    REQUIRE(picture->load(TEST_DIR"/tag.tvg") == Result::Success);
+
+    float w, h;
+    REQUIRE(picture->size(&w, &h) == Result::Success);
+
+    REQUIRE(w == 1000);
+    REQUIRE(h == 1000);
+}
+
+TEST_CASE("Load TVG file from data", "[tvgPicture]")
+{
+    auto picture = Picture::gen();
+    REQUIRE(picture);
+
+    //Open file
+    ifstream file(TEST_DIR"/tag.tvg");
+    REQUIRE(file.is_open());
+    auto begin = file.tellg();
+    file.seekg(0, std::ios::end);
+    auto size = file.tellg() - begin;
+    auto data = (char*)malloc(size);
+    file.seekg(0, std::ios::beg);
+    file.read(data, size);
+    file.close();
+
+    REQUIRE(picture->load(data, size, "", false) == Result::Success);
+    REQUIRE(picture->load(data, size, "tvg", true) == Result::Success);
+
+    float w, h;
+    REQUIRE(picture->size(&w, &h) == Result::Success);
+    REQUIRE(w == 1000);
+    REQUIRE(h == 1000);
+
+    free(data);
+}
+
 TEST_CASE("Picture Size", "[tvgPicture]")
 {
     auto picture = Picture::gen();
@@ -282,6 +326,29 @@ TEST_CASE("Load JPG file and render", "[tvgPicture]")
     REQUIRE(Initializer::term(CanvasEngine::Sw) == Result::Success);
 }
 
+TEST_CASE("Load TVG file and render", "[tvgPicture]")
+{
+    REQUIRE(Initializer::init(CanvasEngine::Sw, 0) == Result::Success);
+
+    auto canvas = SwCanvas::gen();
+    REQUIRE(canvas);
+
+    uint32_t buffer[1000*1000];
+    REQUIRE(canvas->target(buffer, 1000, 1000, 1000, SwCanvas::Colorspace::ABGR8888) == Result::Success);
+
+    auto pictureTag = Picture::gen();
+    REQUIRE(pictureTag);
+    REQUIRE(pictureTag->load(TEST_DIR"/tag.tvg") == Result::Success);
+    REQUIRE(canvas->push(move(pictureTag)) == Result::Success);
+
+    auto pictureTest = Picture::gen();
+    REQUIRE(pictureTest);
+    REQUIRE(pictureTest->load(TEST_DIR"/test.tvg") == Result::Success);
+    REQUIRE(canvas->push(move(pictureTest)) == Result::Success);
+
+    REQUIRE(Initializer::term(CanvasEngine::Sw) == Result::Success);
+}
+
 TEST_CASE("Load RAW file and render", "[tvgPicture]")
 {
     REQUIRE(Initializer::init(CanvasEngine::Sw, 0) == Result::Success);

test/testSavers.cpp

@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2021 Samsung Electronics Co., Ltd. All rights reserved.
+
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <thorvg.h>
+#include "catch.hpp"
+
+using namespace tvg;
+
+TEST_CASE("Saver Creation", "[tvgSavers]")
+{
+    auto saver = Saver::gen();
+    REQUIRE(saver);
+}
+
+TEST_CASE("Save empty shape", "[tvgSavers]")
+{
+    auto shape = Shape::gen();
+    REQUIRE(shape);
+
+    auto saver = Saver::gen();
+    REQUIRE(saver);
+
+    REQUIRE(saver->save(move(shape), TEST_DIR"/test.tvg") == Result::Unknown);
+}
+
+TEST_CASE("Save svg into tvg", "[tvgSavers]")
+{
+    REQUIRE(Initializer::init(CanvasEngine::Sw, 0) == Result::Success);
+
+    auto picture = Picture::gen();
+    REQUIRE(picture);
+    REQUIRE(picture->load(TEST_DIR"/tag.svg") == Result::Success);
+
+    auto saver = Saver::gen();
+    REQUIRE(saver);
+
+    REQUIRE(saver->save(move(picture), TEST_DIR"/tag.tvg") == Result::Success);
+    REQUIRE(saver->sync() == Result::Success);
+
+    REQUIRE(Initializer::term(CanvasEngine::Sw) == Result::Success);
+}
+
+TEST_CASE("Save scene into tvg", "[tvgSavers]")
+{
+    REQUIRE(Initializer::init(CanvasEngine::Sw, 0) == Result::Success);
+
+    auto picture = tvg::Picture::gen();
+    REQUIRE(picture);
+    REQUIRE(picture->load(TEST_DIR"/test.png") == Result::Success);
+    REQUIRE(picture->translate(50, 0) == Result::Success);
+    REQUIRE(picture->scale(2) == Result::Success);
+
+    auto mask = tvg::Shape::gen();
+    REQUIRE(mask);
+    REQUIRE(mask->appendCircle(400, 400, 15, 15) == Result::Success);
+    REQUIRE(mask->fill(0, 0, 0, 255) == Result::Success);
+    REQUIRE(picture->composite(move(mask), tvg::CompositeMethod::InvAlphaMask) == Result::Success);
+
+    auto saver = Saver::gen();
+    REQUIRE(saver);
+    REQUIRE(saver->save(move(picture), TEST_DIR"/test.tvg") == Result::Success);
+    REQUIRE(saver->sync() == Result::Success);
+
+    REQUIRE(Initializer::term(CanvasEngine::Sw) == Result::Success);
+}