1 files changed, 68 insertions, 0 deletions
diff --git a/unittest/mysys/test_file.c b/unittest/mysys/test_file.c
new file mode 100644
index 00000000000..758d0bfa81b
--- /dev/null
+++ b/unittest/mysys/test_file.c
@@ -0,0 +1,68 @@
+#include <tap.h>
+#include <my_sys.h>
+#include <my_dir.h>
+#include "test_file.h"
+
+
+/*
+  Check that file contance correspond to descriptor
+
+  SYNOPSIS
+    test_file()
+    file                 File to test
+    file_name            Path (and name) of file which is tested
+    size                 size of file
+    buff_size            size of buffer which is enought to check the file
+    desc                 file descriptor to check with
+
+  RETURN
+    1 file if OK
+    0 error
+*/
+
+int test_file(PAGECACHE_FILE file, char *file_name,
+              off_t size, size_t buff_size, struct file_desc *desc)
+{
+  MY_STAT stat_buff, *stat;
+  unsigned char *buffr= malloc(buff_size);
+  off_t pos= 0;
+  size_t byte;
+  int step= 0;
+
+  if ((stat= my_stat(file_name, &stat_buff, MYF(0))) == NULL)
+  {
+    diag("Can't stat() %s (errno: %d)\n", file_name, errno);
+    return 0;
+  }
+  if (stat->st_size != size)
+  {
+    diag("file %s size is %lu (should be %lu)\n",
+         file_name, (ulong) stat->st_size, (ulong) size);
+    return 0;
+  }
+  /* check content */
+  my_seek(file.file, 0, SEEK_SET, MYF(0));
+  while (desc[step].length != 0)
+  {
+    if (my_read(file.file, (char*)buffr, desc[step].length, MYF(0)) !=
+        desc[step].length)
+    {
+      diag("Can't read %u bytes from %s (errno: %d)\n",
+           (uint)desc[step].length, file_name, errno);
+      return 0;
+    }
+    for (byte= 0; byte < desc[step].length; byte++)
+    {
+      if (buffr[byte] != desc[step].content)
+      {
+        diag("content of %s mismatch 0x%x in position %lu instead of 0x%x\n",
+             file_name, (uint) buffr[byte], (ulong) (pos + byte),
+             desc[step].content);
+        return 0;
+      }
+    }
+    pos+= desc[step].length;
+    step++;
+  }
+  return 1;
+}