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#include <cstring>
#include <catch2/catch_all.hpp>
#include <cgraph++/AGraph.h>
#include <gvc++/GVContext.h>
#include <gvc++/GVLayout.h>
#include <gvc++/GVRenderData.h>
TEST_CASE("Rendered SVG can be retrieved as a string_view or as a C string") {
const auto demand_loading = false;
auto gvc =
std::make_shared<GVC::GVContext>(lt_preloaded_symbols, demand_loading);
auto dot = "digraph {a}";
auto g = std::make_shared<CGraph::AGraph>(dot);
const auto layout = GVC::GVLayout(gvc, g, "dot");
const auto result = layout.render("svg");
// just check that we seem to have gotten the correct format
REQUIRE(result.string_view().find("<!DOCTYPE svg") != std::string_view::npos);
REQUIRE(result.string_view().compare(result.c_str()) == 0);
REQUIRE(result.string_view().length() == result.length());
REQUIRE(std::strlen(result.c_str()) == result.length());
}
TEST_CASE("Rendering in an unknown format throws an exception") {
const auto demand_loading = false;
auto gvc =
std::make_shared<GVC::GVContext>(lt_preloaded_symbols, demand_loading);
auto dot = "digraph {a}";
auto g = std::make_shared<CGraph::AGraph>(dot);
const auto layout = GVC::GVLayout(gvc, g, "dot");
REQUIRE_THROWS_AS(layout.render("UNKNOWN_FORMAT"), std::runtime_error);
}
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