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#include <string_view>
#include <catch2/catch_all.hpp>
#include "svg_analyzer.h"
#include <cgraph++/AGraph.h>
#include <gvc++/GVContext.h>
#include <gvc++/GVLayout.h>
#include <gvc++/GVRenderData.h>
TEST_CASE(
"Rendering an SVG from a graph without any nodes outputs an SVG containing "
"a single (transparent) polygon") {
const auto demand_loading = false;
auto gvc = GVC::GVContext(lt_preloaded_symbols, demand_loading);
auto dot = "digraph {}";
auto g = CGraph::AGraph(dot);
const auto layout = GVC::GVLayout(std::move(gvc), std::move(g), "dot");
const auto result = layout.render("svg");
SVGAnalyzer svg_analyzer{result.c_str()};
REQUIRE(svg_analyzer.num_svgs() == 1);
REQUIRE(svg_analyzer.num_groups() == 1);
REQUIRE(svg_analyzer.num_circles() == 0);
REQUIRE(svg_analyzer.num_ellipses() == 0);
REQUIRE(svg_analyzer.num_lines() == 0);
REQUIRE(svg_analyzer.num_paths() == 0);
REQUIRE(svg_analyzer.num_polygons() == 1);
REQUIRE(svg_analyzer.num_polylines() == 0);
REQUIRE(svg_analyzer.num_rects() == 0);
REQUIRE(svg_analyzer.num_titles() == 0);
}
TEST_CASE("Rendering an SVG from a graph with a single node outputs an SVG "
"containing an ellipse") {
const auto demand_loading = false;
auto gvc = GVC::GVContext(lt_preloaded_symbols, demand_loading);
auto dot = "digraph {a}";
auto g = CGraph::AGraph(dot);
const auto layout = GVC::GVLayout(std::move(gvc), std::move(g), "dot");
const auto result = layout.render("svg");
SVGAnalyzer svg_analyzer{result.c_str()};
REQUIRE(svg_analyzer.num_svgs() == 1);
REQUIRE(svg_analyzer.num_groups() == 2);
REQUIRE(svg_analyzer.num_ellipses() == 1);
REQUIRE(svg_analyzer.num_circles() == 0);
REQUIRE(svg_analyzer.num_lines() == 0);
REQUIRE(svg_analyzer.num_paths() == 0);
REQUIRE(svg_analyzer.num_polygons() == 1);
REQUIRE(svg_analyzer.num_polylines() == 0);
REQUIRE(svg_analyzer.num_rects() == 0);
REQUIRE(svg_analyzer.num_titles() == 1);
}
TEST_CASE("Rendering an SVG from a graph with two nodes outputs an SVG "
"containing two ellipses") {
const auto demand_loading = false;
auto gvc = GVC::GVContext(lt_preloaded_symbols, demand_loading);
auto dot = "digraph {a b}";
auto g = CGraph::AGraph(dot);
const auto layout = GVC::GVLayout(std::move(gvc), std::move(g), "dot");
const auto result = layout.render("svg");
SVGAnalyzer svg_analyzer{result.c_str()};
REQUIRE(svg_analyzer.num_svgs() == 1);
REQUIRE(svg_analyzer.num_groups() == 3);
REQUIRE(svg_analyzer.num_ellipses() == 2);
REQUIRE(svg_analyzer.num_circles() == 0);
REQUIRE(svg_analyzer.num_lines() == 0);
REQUIRE(svg_analyzer.num_paths() == 0);
REQUIRE(svg_analyzer.num_polygons() == 1);
REQUIRE(svg_analyzer.num_polylines() == 0);
REQUIRE(svg_analyzer.num_rects() == 0);
REQUIRE(svg_analyzer.num_titles() == 2);
}
TEST_CASE("Rendering an SVG from a graph with two nodes and one edge outputs "
"an SVG containing two polygons, two ellipses and one path") {
const auto demand_loading = false;
auto gvc = GVC::GVContext(lt_preloaded_symbols, demand_loading);
auto dot = "digraph {a -> b}";
auto g = CGraph::AGraph(dot);
const auto layout = GVC::GVLayout(std::move(gvc), std::move(g), "dot");
const auto result = layout.render("svg");
SVGAnalyzer svg_analyzer{result.c_str()};
REQUIRE(svg_analyzer.num_svgs() == 1);
REQUIRE(svg_analyzer.num_groups() == 4);
REQUIRE(svg_analyzer.num_ellipses() == 2);
REQUIRE(svg_analyzer.num_circles() == 0);
REQUIRE(svg_analyzer.num_lines() == 0);
REQUIRE(svg_analyzer.num_paths() == 1);
REQUIRE(svg_analyzer.num_polygons() == 2);
REQUIRE(svg_analyzer.num_polylines() == 0);
REQUIRE(svg_analyzer.num_rects() == 0);
REQUIRE(svg_analyzer.num_titles() == 3);
}
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