[glom] Add a simple export test.

[Murray Cumming <murrayc src gnome org>]

commit dd1be4c5a02647fce8cbfbada3e138557fa704bb
Author: Murray Cumming <murrayc murrayc com>
Date:   Wed Mar 9 23:39:30 2016 +0100

    Add a simple export test.

 Makefile_tests.am                         |    6 ++
 tests/test_selfhosting_new_then_export.cc |   83 +++++++++++++++++++++++++++++
 2 files changed, 89 insertions(+), 0 deletions(-)
---
diff --git a/Makefile_tests.am b/Makefile_tests.am
index 2ad29a1..c705f20 100644
--- a/Makefile_tests.am
+++ b/Makefile_tests.am
@@ -41,6 +41,7 @@ check_PROGRAMS =                                              \
        tests/test_selfhosting_new_from_example_float \
        tests/test_selfhosting_new_from_example_operator \
        tests/test_selfhosting_new_from_example_strangepath \
+       tests/test_selfhosting_new_then_export \
        tests/test_selfhosting_new_then_report \
        tests/test_selfhosting_new_then_report_summary \
        tests/test_selfhosting_new_then_image \
@@ -87,6 +88,7 @@ TESTS =       tests/test_document_load        \
        tests/test_selfhosting_new_from_example_operator \
        tests/test_selfhosting_new_from_example_in_locales.sh \
        tests/test_selfhosting_new_from_example_strangepath \
+       tests/test_selfhosting_new_then_export \
        tests/test_selfhosting_new_then_report \
        tests/test_selfhosting_new_then_report_summary \
        tests/test_selfhosting_new_then_backup_restore \
@@ -304,6 +306,10 @@ tests_test_selfhosting_new_from_example_strangepath_SOURCES = tests/test_selfhos
 tests_test_selfhosting_new_from_example_strangepath_LDADD = $(tests_ldadd)
 tests_test_selfhosting_new_from_example_strangepath_CPPFLAGS = $(tests_cppflags)
 
+tests_test_selfhosting_new_then_export_SOURCES = tests/test_selfhosting_new_then_export.cc 
$(sources_test_selfhosting_utils)
+tests_test_selfhosting_new_then_export_LDADD = $(tests_ldadd)
+tests_test_selfhosting_new_then_export_CPPFLAGS = $(tests_cppflags)
+
 tests_test_selfhosting_new_then_report_SOURCES = tests/test_selfhosting_new_then_report.cc 
$(sources_test_selfhosting_utils)
 tests_test_selfhosting_new_then_report_LDADD = $(tests_ldadd)
 tests_test_selfhosting_new_then_report_CPPFLAGS = $(tests_cppflags)
diff --git a/tests/test_selfhosting_new_then_export.cc b/tests/test_selfhosting_new_then_export.cc
new file mode 100644
index 0000000..b103b3d
--- /dev/null
+++ b/tests/test_selfhosting_new_then_export.cc
@@ -0,0 +1,83 @@
+/* Glom
+ *
+ * Copyright (C) 2010 Openismus GmbH
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ */
+
+#include "tests/test_selfhosting_utils.h"
+#include <libglom/init.h>
+#include <libglom/db_utils_export.h>
+#include <glib.h> //For g_assert()
+#include <iostream>
+#include <cstdlib> //For EXIT_SUCCESS and EXIT_FAILURE
+
+
+static bool test(Glom::Document::HostingMode hosting_mode)
+{
+  auto document = std::make_shared<Glom::Document>();
+  const bool recreated = 
+    test_create_and_selfhost_from_example("example_music_collection.glom", document, hosting_mode);
+  if(!recreated)
+  {
+    std::cerr << G_STRFUNC << ": Recreation failed.\n";
+    return false;
+  }
+  
+  Glom::FoundSet found_set; //TODO: Test a where clause.
+  found_set.m_table_name = "albums";
+  Glom::Document::type_list_layout_groups layout_groups;
+  auto group = std::make_shared<Glom::LayoutGroup>();
+  layout_groups.emplace_back(group);
+  auto field_name = std::make_shared<Glom::LayoutItem_Field>();
+  field_name->set_name("name");
+  group->add_item(field_name);
+  auto field_year = std::make_shared<Glom::LayoutItem_Field>();
+  field_year->set_name("year");
+  group->add_item(field_year);
+  
+  std::stringstream the_stream;
+  Glom::DbUtils::export_data_to_stream(document, the_stream, found_set, layout_groups);
+  const auto text = the_stream.str();
+  std::cout << "debug: " << text << std::endl;
+
+  if(text.empty())
+  {
+    std::cerr << G_STRFUNC << ": Failed: text was empty.\n";
+    return false;
+  }
+
+  if(text.find("Superfly") == std::string::npos)
+  {
+    std::cerr << G_STRFUNC << ": Failed: text did not contain the expected text.\n";
+    return false;
+  }
+
+  test_selfhosting_cleanup();
+    
+  return true;
+}
+
+int main()
+{
+  Glom::libglom_init();
+  
+  const auto result = test_all_hosting_modes(sigc::ptr_fun(&test));
+
+  Glom::libglom_deinit();
+
+  return result;
+}