Initial import of simple buflib unit test

Taken from kugel's out-of-tree version:
https://github.com/kugel-/buflib

Needs some API adaptions. More test will follow.

Note: The expected output needs an update since
the in-tree version of buflib does buffer alignment
and also progressed a bit. Still the tests are a very good start.

Added Rockbox copyright header during import were needed.

Change-Id: Ib39ec4301285f1dd53059b7bed0c0d6646297dc5

4 files changed, 182 insertions, 0 deletions

diff --git a/firmware/test/buflib/Makefile b/firmware/test/buflib/Makefile
new file mode 100644
index 0000000000..7c0d36a8ca
--- /dev/null
+++ b/firmware/test/buflib/Makefile
@@ -0,0 +1,50 @@
+FIRMWARE=../..
+
+CC ?= gcc
+CFLAGS += -g -O2 -DDEBUG -D__PCTOOL__ -std=gnu99 -I$(FIRMWARE)/include -I$(FIRMWARE)/export -I.
+LDFLAGS += -L. -lpthread
+
+.PHONY: clean all
+
+TARGETS_OBJ = test_main.o
+TARGETS = $(TARGETS_OBJ:.o=)
+
+LIB_OBJ = 	buflib.o \
+			crc32.o \
+			strlcpy.o
+LIB_FILE = libbuflib.a
+LIB = buflib
+
+
+ifndef V
+SILENT:=@
+else
+VERBOSEOPT:=-v
+endif
+
+PRINTS=$(SILENT)$(call info,$(1))
+
+all: $(TARGETS)
+
+test_%: test_%.o $(LIB_FILE)
+	$(call PRINTS,LD $@)$(CC) $(LDFLAGS) -o $@ $< -l$(LIB)
+
+$(TARGETS): $(TARGETS_OBJ) $(LIB_FILE)
+
+buflib.o: $(FIRMWARE)/buflib.c
+	$(CC) $(CFLAGS) -c $< -o $@
+
+crc32.o: $(FIRMWARE)/common/crc32.c
+	$(CC) $(CFLAGS) -c $< -o $@
+
+strlcpy.o: $(FIRMWARE)/common/strlcpy.c
+	$(CC) $(CFLAGS) -c $< -o $@
+
+%.o: %.c
+	$(call PRINTS,CC $<)$(CC) $(CFLAGS) -c $<
+
+$(LIB_FILE): $(LIB_OBJ)
+	$(call PRINTS,AR $@)ar rcs $@ $^
+
+clean:
+	rm *.o $(TARGETS) $(LIB_FILE)
diff --git a/firmware/test/buflib/autoconf.h b/firmware/test/buflib/autoconf.h
new file mode 100644
index 0000000000..abfaa482e1
--- /dev/null
+++ b/firmware/test/buflib/autoconf.h
@@ -0,0 +1,2 @@
+/* Define endianess for the target or simulator platform */
+#define ROCKBOX_LITTLE_ENDIAN 1
diff --git a/firmware/test/buflib/system-hosted.h b/firmware/test/buflib/system-hosted.h
new file mode 100644
index 0000000000..40b5ea8f9f
--- /dev/null
+++ b/firmware/test/buflib/system-hosted.h
@@ -0,0 +1,43 @@
+/***************************************************************************
+*             __________               __   ___.
+*   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+*   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+*   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+*   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+*                     \/            \/     \/    \/            \/
+* $Id$
+*
+* Copyright (C) 2015 Thomas Jarosch
+*
+* Loosely based upon rbcodecplatform-unix.h from rbcodec
+*
+* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+* KIND, either express or implied.
+*
+****************************************************************************/
+
+#ifndef _COMMON_UNITTEST_H
+#define _COMMON_UNITTEST_H
+
+/* debugf, logf */
+#define debugf(...) fprintf(stderr, __VA_ARGS__)
+
+#ifndef logf
+#define logf(...) do { fprintf(stderr, __VA_ARGS__); \
+                       putc('\n', stderr);           \
+                  } while (0)
+#endif
+
+#ifndef panicf
+#define panicf(...) do { fprintf(stderr, __VA_ARGS__); \
+                         putc('\n', stderr);           \
+                         exit(-1);                     \
+                  } while (0)
+#endif
+
+#endif /* _COMMON_UNITTEST_H */
diff --git a/firmware/test/buflib/test_main.c b/firmware/test/buflib/test_main.c
new file mode 100644
index 0000000000..050deca006
--- /dev/null
+++ b/firmware/test/buflib/test_main.c
@@ -0,0 +1,87 @@
+/***************************************************************************
+*             __________               __   ___.
+*   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+*   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+*   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+*   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+*                     \/            \/     \/    \/            \/
+* $Id$
+*
+* Copyright (C) 2011 Thomas Martitz
+*
+* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+* KIND, either express or implied.
+*
+****************************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "buflib.h"
+
+#define BUFLIB_BUFFER_SIZE (12<<10)
+static char buflib_buffer[BUFLIB_BUFFER_SIZE];
+static struct buflib_context ctx;
+#define assert(x) do { if (!(x)) exit(1); } while(0)
+
+int move_callback(int handle, void* current, void* new)
+{
+    (void)handle;(void)current;(void)new;
+    printf("Move!\n");
+}
+
+int shrink_callback(int handle, unsigned hints, void* start, size_t old_size)
+{
+    (void)handle;(void)start;(void)old_size;(void)hints;
+    printf("Shrink");
+}
+
+struct buflib_callbacks ops = {
+    .move_callback = move_callback,
+    .shrink_callback = shrink_callback,
+};
+
+int main(int argc, char **argv)
+{
+    buflib_init(&ctx, buflib_buffer, BUFLIB_BUFFER_SIZE);
+
+    int id = buflib_alloc_ex(&ctx, 512, "foo", &ops);
+    int id2 = buflib_alloc_ex(&ctx, 1024, "bar", &ops);
+    int id3 = buflib_alloc_ex(&ctx, 8<<10, "8K", &ops);
+
+    assert(id > 0 && id2 > 0 && id3 > 0);
+
+    #define STR "<TEST>"
+    strncpy(buflib_get_data(&ctx, id3), STR, sizeof STR);
+    if (id > 0)
+    {
+//        buflib_print_allocs(&ctx);
+        buflib_free(&ctx, id);
+//        buflib_print_allocs(&ctx);
+        buflib_free(&ctx, id2);
+//        buflib_print_allocs(&ctx);
+
+        id = buflib_alloc_ex(&ctx, 3<<10, "should compact", &ops);
+        if (id <= 0) printf("compacting alloc failed\n");
+
+//        buflib_print_allocs(&ctx);
+
+        printf("id I: %p\n", buflib_get_data(&ctx, id3));
+        id2 = buflib_alloc_ex(&ctx, 3<<10, "should fail", &ops);
+        printf("id II: %p\n", buflib_get_data(&ctx, id3));
+        if (id2 <= 0) printf("failing alloc failed\n");
+        else buflib_free(&ctx, id2);
+
+        if (id > 0)
+            buflib_free(&ctx, id);
+
+        printf("Check string: \"%s\"\n", buflib_get_data(&ctx, id3));
+//        buflib_print_allocs(&ctx);
+    }
+
+    return 0;
+}