start postgis datasource tests

test/data

@@ -1 +1 @@
-Subproject commit ef1829d859e5da5b117e4e4334abf6942c5c884c
+Subproject commit 47421b1b57ce623bb8f829870b04f03877bacafa

test/unit/datasource/postgis.cpp

@@ -0,0 +1,94 @@
+/*****************************************************************************
+ *
+ * This file is part of Mapnik (c++ mapping toolkit)
+ *
+ * Copyright (C) 2015 Artem Pavlenko
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ *****************************************************************************/
+
+#include "catch.hpp"
+#include "ds_test_util.hpp"
+
+#include <mapnik/datasource.hpp>
+#include <mapnik/datasource_cache.hpp>
+#include <mapnik/geometry_type.hpp>
+#include <mapnik/util/fs.hpp>
+
+/*
+
+Compile and run just this test:
+
+clang++ -o test-postgis -g -I./test/ test/unit/run.cpp test/unit/datasource/postgis.cpp `mapnik-config --all-flags` && ./test-postgis -d yes
+
+*/
+
+namespace {
+
+int run(std::string const& command, bool silent = false)
+{
+    std::string cmd;
+    if (std::getenv("DYLD_LIBRARY_PATH") != nullptr)
+    {
+        cmd += std::string("export DYLD_LIBRARY_PATH=") + std::getenv("DYLD_LIBRARY_PATH") + " && ";
+    }
+    cmd += command;
+    if (silent)
+    {
+#ifndef _WINDOWS
+        cmd += " 2>/dev/null";
+#else
+        cmd += " 2> nul";
+#endif
+    }
+    bool worked = (std::system(cmd.c_str()) == 0);
+    if (silent == true) return true;
+    return worked;
+}
+
+
+TEST_CASE("postgis") {
+
+    SECTION("Postgis data initialization")
+    {
+        REQUIRE(run("dropdb mapnik-tmp-postgis-test-db",true));
+        REQUIRE(run("createdb -T template_postgis mapnik-tmp-postgis-test-db"));
+        std::stringstream cmd;
+        cmd << "psql -q mapnik-tmp-postgis-test-db -f ./test/data/sql/table1.sql";
+        REQUIRE(run(cmd.str()));
+    }
+
+    std::string datasource_plugin("./plugins/input/postgis.input");
+    if (mapnik::util::exists(datasource_plugin))
+    {
+        SECTION("Postgis plugin initialization")
+        {
+            mapnik::parameters params;
+            params["type"] = "postgis";
+            params["dbname"] = "mapnik-tmp-postgis-test-db";
+            params["table"] = "test";
+            auto ds = mapnik::datasource_cache::instance().create(params);
+            REQUIRE(ds != nullptr);
+            CHECK(ds->type() == mapnik::datasource::datasource_t::Vector);
+            auto fields = ds->get_descriptor().get_descriptors();
+            require_field_names(fields, {"gid"});
+            require_field_types(fields, {mapnik::Integer});
+        }
+    }
+}
+
+
+}