From 2febe632c5cf3a9127c0e71dab9bbe46e4a474a7 Mon Sep 17 00:00:00 2001
From: Alibek Omarov <a1ba.omarov@gmail.com>
Date: Mon, 26 Dec 2022 18:58:44 +0300
Subject: [PATCH] filesystem: add caseinsensitive emulation test

---
 filesystem/tests/caseinsensitive.c | 122 +++++++++++++++++++++++++++++
 filesystem/wscript                 |  22 +++++-
 2 files changed, 143 insertions(+), 1 deletion(-)
 create mode 100644 filesystem/tests/caseinsensitive.c

diff --git a/filesystem/tests/caseinsensitive.c b/filesystem/tests/caseinsensitive.c
new file mode 100644
index 00000000..f0478630
--- /dev/null
+++ b/filesystem/tests/caseinsensitive.c
@@ -0,0 +1,122 @@
+#include "port.h"
+#include "build.h"
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include "filesystem.h"
+#if XASH_POSIX
+#include <dlfcn.h>
+#define LoadLibrary( x ) dlopen( x, RTLD_NOW )
+#define GetProcAddress( x, y ) dlsym( x, y )
+#define FreeLibrary( x ) dlclose( x )
+#elif XASH_WIN32
+#include <windows.h>
+#endif
+
+void *g_hModule;
+FSAPI g_pfnGetFSAPI;
+fs_api_t g_fs;
+fs_globals_t *g_nullglobals;
+
+
+static qboolean LoadFilesystem( void )
+{
+	g_hModule = LoadLibrary( "filesystem_stdio." OS_LIB_EXT );
+	if( !g_hModule )
+		return false;
+
+	g_pfnGetFSAPI = (void*)GetProcAddress( g_hModule, GET_FS_API );
+	if( !g_pfnGetFSAPI )
+		return false;
+
+	if( !g_pfnGetFSAPI( FS_API_VERSION, &g_fs, &g_nullglobals, NULL ))
+		return false;
+
+	return true;
+}
+
+static qboolean CheckFileContents( const char *path, const void *buf, fs_offset_t size )
+{
+	fs_offset_t len;
+	byte *data;
+
+	data = g_fs.LoadFile( path, &len, true );
+	if( !data )
+	{
+		printf( "LoadFile fail\n" );
+		return false;
+	}
+
+	if( len != size )
+	{
+		printf( "LoadFile sizeof fail\n" );
+		free( data );
+		return false;
+	}
+
+	if( memcmp( data, buf, size ))
+	{
+		printf( "LoadFile magic fail\n" );
+		free( data );
+		return false;
+	}
+
+	free( data );
+	return true;
+}
+
+static qboolean TestCaseinsensitive( void )
+{
+	file_t *f1;
+	FILE *f2;
+	int magic = rand();
+
+	// create game dir for us
+	g_fs.AddGameDirectory( "./", FS_GAMEDIR_PATH );
+
+	// create some files first and write data
+	f1 = g_fs.Open( "FOO/Bar.bin", "wb", true );
+	g_fs.Write( f1, &magic, sizeof( magic ));
+	g_fs.Close( f1 );
+
+	// try to search it with different file name
+	if( !g_fs.FileExists( "fOO/baR.bin", true ))
+	{
+		printf( "FileExists fail\n" );
+		return false;
+	}
+
+	// create a file directly, to check if cache can re-read
+	f2 = fopen( "FOO/Baz.bin", "wb" );
+	fwrite( &magic, sizeof( magic ), 1, f2 );
+	fclose( f2 );
+
+	// try to open first file back but with different file name case
+	if( !CheckFileContents( "foo/bar.BIN", &magic, sizeof( magic )))
+		return false;
+
+	// try to open second file that we created directly
+	if( !CheckFileContents( "Foo/BaZ.Bin", &magic, sizeof( magic )))
+		return false;
+
+	g_fs.Delete( "foo/Baz.biN" );
+	g_fs.Delete( "foo/bar.bin" );
+	g_fs.Delete( "Foo" );
+
+	return true;
+}
+
+int main( void )
+{
+	if( !LoadFilesystem() )
+		return EXIT_FAILURE;
+
+	srand( time( NULL ));
+
+	if( !TestCaseinsensitive())
+		return EXIT_FAILURE;
+
+	printf( "success\n" );
+
+	return EXIT_SUCCESS;
+}
diff --git a/filesystem/wscript b/filesystem/wscript
index 2b8d8a8b..362892b1 100644
--- a/filesystem/wscript
+++ b/filesystem/wscript
@@ -1,7 +1,12 @@
 #!/usr/bin/env python
 
+from waflib.Tools import waf_unit_test
+
 def options(opt):
-	pass
+	grp = opt.add_option_group('filesystem_stdio options')
+
+	grp.add_option('--enable-fs-tests', action='store_true', dest = 'FS_TESTS', default = False,
+		help = 'enable filesystem_stdio tests')
 
 def configure(conf):
 	nortti = {
@@ -10,6 +15,8 @@ def configure(conf):
 	}
 	conf.env.append_unique('CXXFLAGS', conf.get_flags_by_compiler(nortti, conf.env.COMPILER_CC))
 
+	conf.env.FS_TESTS = conf.options.FS_TESTS
+
 	if conf.env.DEST_OS != 'android':
 		if conf.env.cxxshlib_PATTERN.startswith('lib'):
 			conf.env.cxxshlib_PATTERN = conf.env.cxxshlib_PATTERN[3:]
@@ -22,3 +29,16 @@ def build(bld):
 		use = 'filesystem_includes public',
 		install_path = bld.env.LIBDIR,
 		subsystem = bld.env.MSVC_SUBSYSTEM)
+
+	if bld.env.FS_TESTS:
+		# build in same module, so dynamic linking will work
+		# for now (until we turn libpublic to shared module lol)
+		bld.program(features = 'test',
+			source = 'tests/caseinsensitive.c',
+			target = 'test_caseinsensitive',
+			use = 'filesystem_includes public DL',
+			rpath = '$ORIGIN',
+			subsystem = bld.env.CONSOLE_SUBSYSTEM,
+			install_path = None)
+		bld.add_post_fun(waf_unit_test.summary)
+		bld.add_post_fun(waf_unit_test.set_exit_code)