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image_io_test : add 'save_to_xxx' tests

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This commit is contained in:
artemp 2016-01-20 12:24:08 +01:00
parent 5471f519cd
commit 2db9818ab9
1 changed files with 43 additions and 1 deletions
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44
test/unit/imaging/image_io_test.cpp
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@ -1,6 +1,7 @@
#include "catch.hpp"
#include <iostream>
#include <cstring>
#include <mapnik/image.hpp>
#include <mapnik/image_reader.hpp>
#include <mapnik/image_util.hpp>
@ -11,6 +12,8 @@
#include <mapnik/cairo/cairo_image_util.hpp>
#endif
#include <boost/format.hpp>
TEST_CASE("image io") {
SECTION("readers") {
@ -110,7 +113,46 @@ SECTION("writers options")
int q1 = mapnik::detail::parse_jpeg_quality("jpeg:quality=50");
REQUIRE(q0 == q1);
#endif
} // END SECTION
SECTION("image_util : save_to_file/save_to_stream/save_to_string")
{
mapnik::image_rgba8 im(256,256);
std::string named_color = "lightblue";
mapnik::fill(im, mapnik::color(named_color).rgba());
////////////////////////////////////////////////////
std::vector<std::string> supported_types;
#if defined(HAVE_PNG)
supported_types.push_back("png");
#endif
#if defined(HAVE_JPEG)
supported_types.push_back("jpeg");
#endif
#if defined(HAVE_TIFF)
supported_types.push_back("tiff");
#endif
#if defined(HAVE_WEBP)
supported_types.push_back("webp");
#endif
for (auto const& type : supported_types)
{
std::string filename = (boost::format("/tmp/mapnik-%1%.%2%") % named_color % type).str();
mapnik::save_to_file(im, filename);
std::string str = mapnik::save_to_string(im, type);
std::ostringstream ss;
mapnik::save_to_stream(im, ss, type);
CHECK(str.length() == ss.str().length());
std::unique_ptr<mapnik::image_reader> reader(mapnik::get_image_reader(filename,type));
unsigned w = reader->width();
unsigned h = reader->height();
auto im2 = reader->read(0, 0, w, h);
CHECK(im2.size() == im.size());
if (type == "png" || type == "tiff")
{
CHECK(0 == std::memcmp(im2.bytes(), im.bytes(), im.width() * im.height()));
}
}
}
} // END TEST_CASE