Add unit test for memory export/import with caca format

tests/Makefile.am

@@ -13,7 +13,7 @@ TESTS = $(noinst_PROGRAMS)
 simple_SOURCES = simple.c
 simple_LDADD = ../caca/libcaca.la
 
-caca_test_SOURCES = caca-test.cpp canvas.cpp dirty.cpp driver.cpp
+caca_test_SOURCES = caca-test.cpp canvas.cpp dirty.cpp driver.cpp export.cpp
 caca_test_CXXFLAGS = $(CPPUNIT_CFLAGS)
 caca_test_LDADD = ../caca/libcaca.la $(CPPUNIT_LIBS)
 

tests/export.cpp

@@ -0,0 +1,74 @@
+/*
+ *  caca-test     testsuite program for libcaca
+ *  Copyright (c) 2009 Pascal Terjan <pterjan@linuxfr.org>
+ *                All Rights Reserved
+ *
+ *  $Id$
+ *
+ *  This program is free software. It comes without any warranty, to
+ *  the extent permitted by applicable law. You can redistribute it
+ *  and/or modify it under the terms of the Do What The Fuck You Want
+ *  To Public License, Version 2, as published by Sam Hocevar. See
+ *  http://sam.zoy.org/wtfpl/COPYING for more details.
+ */
+
+#include "config.h"
+
+#include <cppunit/extensions/HelperMacros.h>
+#include <cppunit/TestCaller.h>
+#include <cppunit/TestCase.h>
+#include <cppunit/TestSuite.h>
+
+#include "caca.h"
+
+class ExportTest : public CppUnit::TestCase
+{
+    CPPUNIT_TEST_SUITE(ExportTest);
+    CPPUNIT_TEST(test_export_area_caca);
+    CPPUNIT_TEST_SUITE_END();
+
+public:
+    ExportTest() : CppUnit::TestCase("Export/Import Test") {}
+
+    void setUp() {}
+
+    void tearDown() {}
+
+    void test_export_area_caca()
+    {
+        caca_canvas_t *cv;
+        size_t bytes, l;
+        void *buf;
+
+        cv = caca_create_canvas(WIDTH, HEIGHT);
+        caca_put_char(cv, 7, 3, 'a');
+        caca_put_char(cv, 10, 3, 'b');
+        caca_put_char(cv, 5, 5, 'c');
+        buf = caca_export_area_to_memory (cv, 0, 0, 10, 5, "caca", &bytes);
+        CPPUNIT_ASSERT(buf != NULL);
+        CPPUNIT_ASSERT(bytes > 0);
+
+        caca_clear_canvas(cv);
+        l = caca_import_area_from_memory(cv, 0, 0, buf, bytes, "caca");
+        CPPUNIT_ASSERT(l == bytes);
+        CPPUNIT_ASSERT(caca_get_char(cv, 7, 3) == 'a');
+        CPPUNIT_ASSERT(caca_get_char(cv, 10, 3) == ' ');
+        CPPUNIT_ASSERT(caca_get_char(cv, 5, 5) == ' ');
+
+        caca_put_char(cv, 10, 3, 'b');
+        caca_put_char(cv, 5, 5, 'c');
+        l = caca_import_area_from_memory(cv, 0, 0, buf, bytes, "caca");
+        CPPUNIT_ASSERT(l == bytes);
+        CPPUNIT_ASSERT(caca_get_char(cv, 7, 3) == 'a');
+        CPPUNIT_ASSERT(caca_get_char(cv, 10, 3) == 'b');
+        CPPUNIT_ASSERT(caca_get_char(cv, 5, 5) == 'c');
+
+        caca_free_canvas(cv);
+    }
+
+private:
+    static int const WIDTH = 80, HEIGHT = 50;
+};
+
+CPPUNIT_TEST_SUITE_REGISTRATION(ExportTest);
+