Add tests for RWops

testdata/test.txt

@@ -0,0 +1 @@
+abcdefgh

tests/CMakeLists.txt

@@ -6,6 +6,8 @@ SET(HEADER_TESTS
 	header_point
 	header_rect
 	header_renderer
+	header_rwops
+	header_extrarwops
 	header_sdl
 	header_sdl2pp
 	header_texture
@@ -15,6 +17,7 @@ SET(HEADER_TESTS
 # simple command-line tests
 SET(CLI_TESTS
 	test_pointrect
+	test_rwops
 )
 
 # tests which test graphics functionality and thus requre working
@@ -23,6 +26,8 @@ SET(GUI_TESTS
 	gui_rendering
 )
 
+ADD_DEFINITIONS(-DTESTDATA_DIR="${PROJECT_SOURCE_DIR}/testdata")
+
 FOREACH(TEST ${HEADER_TESTS})
 	ADD_EXECUTABLE(${TEST} ${TEST}.cc)
 ENDFOREACH(TEST ${TESTS})

tests/header_extrarwops.cc

@@ -0,0 +1,5 @@
+#include <SDL2pp/ExtraRWops.hh>
+
+int main() {
+	return 0;
+}

tests/header_rwops.cc

@@ -0,0 +1,5 @@
+#include <SDL2pp/RWops.hh>
+
+int main() {
+	return 0;
+}

tests/test_rwops.cc

@@ -0,0 +1,132 @@
+#include <vector>
+
+#include <SDL2pp/Exception.hh>
+#include <SDL2pp/ExtraRWops.hh>
+#include <SDL2pp/RWops.hh>
+
+#include "testing.h"
+
+using namespace SDL2pp;
+
+BEGIN_TEST()
+	// First check our custom ContainerRWops, not touching
+	// SDL-provided RWops services
+	{
+		std::vector<char> buffer = { 'a', 'b', 'c', 'd' };
+
+		RWops rw((ContainerRWops<std::vector<char>>(buffer)));
+
+		{
+			// Initial position
+			EXPECT_TRUE(rw.Tell() == 0);
+		}
+
+		{
+			// Seeks
+			EXPECT_TRUE(rw.Seek(0, SEEK_SET) == 0);
+			EXPECT_TRUE(rw.Tell() == 0);
+			EXPECT_TRUE(rw.Seek(1, SEEK_SET) == 1);
+			EXPECT_TRUE(rw.Tell() == 1);
+			EXPECT_TRUE(rw.Seek(1, SEEK_CUR) == 2);
+			EXPECT_TRUE(rw.Tell() == 2);
+			EXPECT_TRUE(rw.Seek(-1, SEEK_END) == 3);
+			EXPECT_TRUE(rw.Tell() == 3);
+		}
+
+		{
+			// Read via C++
+			EXPECT_TRUE(rw.Seek(0, SEEK_SET) == 0);
+
+			char buf[4] = {0};
+			EXPECT_TRUE(rw.Read(buf, 1, 4) == 4);
+			EXPECT_TRUE(buf[0] == 'a' && buf[3] == 'd');
+
+			// Position after read
+			EXPECT_TRUE(rw.Tell() == 4);
+		}
+
+		{
+			// Read via C++
+			EXPECT_TRUE(rw.Seek(0, SEEK_SET) == 0);
+
+			char buf[4] = {0};
+			EXPECT_TRUE(rw.Read(buf, 4, 1) == 1);
+			EXPECT_TRUE(buf[0] == 'a' && buf[3] == 'd');
+
+			// Position after read
+			EXPECT_TRUE(rw.Tell() == 4);
+		}
+
+		{
+			// Read via SDL
+			EXPECT_TRUE(rw.Seek(0, SEEK_SET) == 0);
+
+			char buf[4] = {0};
+			EXPECT_TRUE(SDL_RWread(rw.Get(), buf, 1, 4) == 4);
+			EXPECT_TRUE(buf[0] == 'a' && buf[3] == 'd');
+
+			// Position after read
+			EXPECT_TRUE(rw.Tell() == 4);
+		}
+
+		{
+			// Overread
+			EXPECT_TRUE(rw.Seek(0, SEEK_SET) == 0);
+
+			char buf[6] = {0};
+			EXPECT_TRUE(SDL_RWread(rw.Get(), buf, 3, 2) == 1);
+			rw.Seek(0, SEEK_SET);
+			EXPECT_TRUE(SDL_RWread(rw.Get(), buf, 2, 3) == 2);
+		}
+
+		{
+			// Write
+			EXPECT_TRUE(rw.Seek(0, SEEK_SET) == 0);
+
+			char buf[2] = {'1', '2'};
+			EXPECT_TRUE(rw.Write(buf, 1, 2) == 2);
+			EXPECT_TRUE(rw.Write(buf, 2, 1) == 1);
+			EXPECT_TRUE(SDL_RWwrite(rw.Get(), buf, 1, 2) == 2);
+			EXPECT_TRUE(SDL_RWwrite(rw.Get(), buf, 2, 1) == 1);
+
+			EXPECT_TRUE(rw.Tell() == 8);
+			EXPECT_TRUE(buffer.size() == 8);
+			EXPECT_TRUE(buffer == std::vector<char>({'1', '2', '1', '2', '1', '2', '1', '2'}));
+		}
+
+		{
+			// Write past EOF
+			char buf[2] = {'x', 'y'};
+			EXPECT_TRUE(rw.Seek(100, SEEK_SET) == 100);
+
+			EXPECT_TRUE(rw.Write(buf, 1, 2) == 2);
+			EXPECT_TRUE(rw.Tell() == 102);
+			EXPECT_TRUE(buffer.size() == 102);
+			EXPECT_TRUE(buffer[99] == '\0');
+			EXPECT_TRUE(buffer[100] == 'x');
+			EXPECT_TRUE(buffer[101] == 'y');
+		}
+
+		{
+			// Test moving
+			RWops rw1(std::move(rw));
+			rw1.Close();
+		}
+	}
+
+	// SDL file read test
+	{
+		RWops rw = RWops::FromFile(TESTDATA_DIR "/test.txt");
+
+		EXPECT_TRUE(rw.Tell() == 0);
+		char buf[8] = {0};
+		EXPECT_TRUE(rw.Read(buf, 1, 8) == 8);
+		EXPECT_TRUE(buf[0] == 'a');
+		EXPECT_TRUE(buf[7] == 'h');
+		EXPECT_TRUE(rw.Tell() == 8);
+
+		rw.Close();
+	}
+HANDLE_EXCEPTION(Exception& e)
+	std::cerr << "unexpected SDL exception was thrown during the test: " << e.what() << ": " << e.GetSDLError() << std::endl;
+END_TEST()