diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index fa52345..eacca14 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -25,7 +25,7 @@ jobs:
         make
 
     - name: Test
-      run: ctest
+      run: ctest --output-on-failure
       working-directory: out/${{ matrix.build-type }}
 
   build-x11:
@@ -43,5 +43,5 @@ jobs:
         make
 
     - name: Test
-      run: ctest
+      run: ctest --output-on-failure
       working-directory: out
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 2826769..8234f9a 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -44,5 +44,5 @@ jobs:
         make
 
     - name: Test
-      run: ctest
+      run: ctest --output-on-failure
       working-directory: out/debug
diff --git a/doc/GRFMT.TXT b/doc/GRFMT.TXT
index e51327d..7ff16db 100644
--- a/doc/GRFMT.TXT
+++ b/doc/GRFMT.TXT
@@ -27,7 +27,7 @@
     Midi     : MIDIデータ
     Data     : その他データ
     Save     : セーブデータ
-    Resouce  : リソースファイル(マウスカーソル形状)
+    Resource : リソースファイル(マウスカーソル形状)
     Ain      : DLL とその関数の情報のかかれた System39.ain
     BGM      : BGMデータ(エスカレイヤー以降のBGMデータファイル)
     WAI      : PCMデータの追加情報 (mixer channel 情報等)
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index d32d70e..3424231 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -105,6 +105,10 @@ else()  # non-emscripten, non-android
   endif()
 
   install(TARGETS xsystem35 RUNTIME DESTINATION bin)
+
+  add_executable(src_tests src_tests.c gameresource_test.c gameresource.c)
+  add_test(NAME src_tests COMMAND src_tests)
+  configure_file(testdata/test.gr ${CMAKE_CURRENT_BINARY_DIR}/testdata/test.gr COPYONLY)
 endif()
 
 # FIXME: set up dependency for xsystem35 on this
diff --git a/src/gameresource.c b/src/gameresource.c
index 4967f8e..f9a94fe 100644
--- a/src/gameresource.c
+++ b/src/gameresource.c
@@ -68,7 +68,7 @@ static boolean initFromDir(GameResource *gr) {
 	getcwd(cwd, 255);
 	DIR *dir = opendir(".");
 	if(!dir)
-		SYSERROR("Game Resouce File open failed\n");
+		SYSERROR("Game Resource File open failed\n");
 
 	struct dirent* d;
 	while ((d = readdir(dir))) {
@@ -128,6 +128,7 @@ static boolean initFromFile(GameResource *gr, FILE *fp, const char *gr_fname) {
 	while (fgets(line, 255, fp) != NULL) {
 		linecnt++;
 		if (line[0] == '#') continue;
+		path[0] = '\0';
 		sscanf(line, "%s %[^\n]", key, path);
 		if (path[0] == '\0') continue;
 		trimRight(path);
@@ -184,11 +185,11 @@ static boolean initFromFile(GameResource *gr, FILE *fp, const char *gr_fname) {
 	return TRUE;
 
  errexit:
-	SYSERROR("Illigal resouce at line(%d) file<%s>\n", linecnt, gr_fname);
+	SYSERROR("Illigal resource at line(%d) file<%s>\n", linecnt, gr_fname);
 	return FALSE;
 }
 
-boolean initGameResorce(GameResource *gr, const char *gr_fname) {
+boolean initGameResource(GameResource *gr, const char *gr_fname) {
 	memset(gr, 0, sizeof(GameResource));
 	FILE *fp = fopen(gr_fname, "r");
 	if (!fp)
diff --git a/src/gameresource.h b/src/gameresource.h
index 988a096..011d0a7 100644
--- a/src/gameresource.h
+++ b/src/gameresource.h
@@ -40,6 +40,6 @@ typedef struct {
 	char *alk[10];
 } GameResource;
 
-boolean initGameResorce(GameResource *gr, const char *gr_fname);
+boolean initGameResource(GameResource *gr, const char *gr_fname);
 
 #endif /* !__GAMERESOURCE_H__ */
diff --git a/src/gameresource_test.c b/src/gameresource_test.c
new file mode 100644
index 0000000..b5dae7c
--- /dev/null
+++ b/src/gameresource_test.c
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2020 <KichikuouChrome@gmail.com>
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+#undef NDEBUG
+#include "gameresource.h"
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+void gameresource_test(void) {
+#ifdef _WIN32
+	_putenv("HOME=/home/kichikuou");
+#else
+	setenv("HOME", "/home/kichikuou", 1);
+#endif
+
+	GameResource gr;
+	assert(initGameResource(&gr, "testdata/test.gr"));
+
+	assert(gr.cnt[DRIFILE_SCO] == 1);
+	assert(strcmp(gr.game_fname[DRIFILE_SCO][0], "fooSA.ALD") == 0);
+	assert(gr.cnt[DRIFILE_CG] == 2);
+	assert(strcmp(gr.game_fname[DRIFILE_CG][0], "fooGA.ALD") == 0);
+	assert(strcmp(gr.game_fname[DRIFILE_CG][1], "fooGB.ALD") == 0);
+	assert(gr.cnt[DRIFILE_WAVE] == 26);
+	assert(strcmp(gr.game_fname[DRIFILE_WAVE][0], "fooWA.ALD") == 0);
+	for (int i = 1; i <= 24; i++)
+		assert(gr.game_fname[DRIFILE_WAVE][i] == NULL);
+	assert(strcmp(gr.game_fname[DRIFILE_WAVE][25], "fooWZ.ALD") == 0);
+	assert(gr.cnt[DRIFILE_MIDI] == 3);
+	assert(strcmp(gr.game_fname[DRIFILE_MIDI][2], "fooMC.ALD") == 0);
+	assert(strcmp(gr.game_fname[DRIFILE_DATA][0], "file name with whitespaces") == 0);
+	assert(strcmp(gr.game_fname[DRIFILE_RSC][0], "this line has whitespaces at end of line") == 0);
+	assert(strcmp(gr.game_fname[DRIFILE_BGM][0], "/path/to/fooBA.ALD") == 0);
+
+	assert(strcmp(gr.ain, "System39.ain") == 0);
+	assert(strcmp(gr.wai, "foo_WA.WAI") == 0);
+	assert(strcmp(gr.bgi, "foo_BA.BGI") == 0);
+	assert(strcmp(gr.sact01, "SACTEFAM.KLD") == 0);
+	assert(strcmp(gr.init, "System39.ini") == 0);
+	assert(strcmp(gr.alk[0], "0.alk") == 0);
+	for (int i = 1; i <= 8; i++)
+		assert(gr.alk[i] == NULL);
+	assert(strcmp(gr.alk[9], "9.alk") == 0);
+
+	assert(strcmp(gr.save_fname[0], "/home/kichikuou/save/foo_sa.asd") == 0);
+	assert(strcmp(gr.save_fname[25], "/tmp/foo_sz.asd") == 0);
+	// save_path is determined based on save_fname[0].
+	assert(strcmp(gr.save_path, "/home/kichikuou/save") == 0);
+}
diff --git a/src/src_tests.c b/src/src_tests.c
new file mode 100644
index 0000000..6cfc004
--- /dev/null
+++ b/src/src_tests.c
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2020 <KichikuouChrome@gmail.com>
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+void gameresource_test(void);
+
+void sys_error(char *format, ...) {
+	va_list args;
+	va_start(args, format);
+	vfprintf(stderr, format, args);
+	va_end(args);
+	exit(1);
+}
+
+int main() {
+	gameresource_test();
+	return 0;
+}
diff --git a/src/testdata/test.gr b/src/testdata/test.gr
new file mode 100644
index 0000000..04c7f49
--- /dev/null
+++ b/src/testdata/test.gr
@@ -0,0 +1,22 @@
+# This line is a comment.
+
+ScenarioA fooSA.ALD
+GraphicsA fooGA.ALD
+GraphicsB fooGB.ALD
+WaveA fooWA.ALD
+WaveZ fooWZ.ALD
+MidiC fooMC.ALD
+DataA file name with whitespaces
+  ResourceA	 this line has whitespaces at end of line  
+BGMA /path/to/fooBA.ALD
+
+Ain	System39.ain
+WAIA	foo_WA.WAI
+BGIA	foo_BA.BGI
+SACT01	SACTEFAM.KLD
+Init	System39.ini
+ALK00	0.alk
+ALK09	9.alk
+
+SaveA	~/save/foo_sa.asd
+SaveZ	/tmp/foo_sz.asd
diff --git a/src/xsystem35.c b/src/xsystem35.c
index cb4a9e5..53e83e8 100644
--- a/src/xsystem35.c
+++ b/src/xsystem35.c
@@ -120,7 +120,7 @@ static void sys35_usage(boolean verbose) {
 	}
 	puts("Usage: xsystem35 [OPTIONS]\n");
 	puts("OPTIONS");
-	puts(" -gamefile file : set game resouce file to 'file'");
+	puts(" -gamefile file : set game resource file to 'file'");
 	puts(" -no-shm        : don't use MIT-SHM (use in another display)");
 	puts(" -devcd device  : set cdrom device name to 'device'");
 	puts(" -devmidi device: set midi device name to 'device'");
@@ -626,7 +626,7 @@ int main(int argc, char **argv) {
 	}
 #endif
 	GameResource gr;
-	if (!initGameResorce(&gr, gameResourceFile))
+	if (!initGameResource(&gr, gameResourceFile))
 		sys35_usage(TRUE);
 	registerGameFiles(&gr);