Merge #6422 from ZyX-I/fix-6420

eval,fileio: Omit additional fsync() call

1 files changed, 19 insertions, 0 deletions

diff --git a/test/unit/os/fileio_spec.lua b/test/unit/os/fileio_spec.lua
index 7a738ce85c..5e1b2523fa 100644
--- a/test/unit/os/fileio_spec.lua
+++ b/test/unit/os/fileio_spec.lua
@@ -80,6 +80,10 @@ local function file_read(fp, size)
   return ret1, ret2
 end
 
+local function file_flush(fp)
+  return m.file_flush(fp)
+end
+
 local function file_fsync(fp)
   return m.file_fsync(fp)
 end
@@ -244,6 +248,21 @@ describe('file_fsync', function()
   end)
 end)
 
+describe('file_flush', function()
+  itp('can flush writes to disk', function()
+    local err, fp = file_open(filec, m.kFileCreateOnly, 384)
+    eq(0, file_flush(fp))
+    eq(0, err)
+    eq(0, lfs.attributes(filec).size)
+    local wsize = file_write(fp, 'test')
+    eq(4, wsize)
+    eq(0, lfs.attributes(filec).size)
+    eq(0, file_flush(fp))
+    eq(wsize, lfs.attributes(filec).size)
+    eq(0, m.file_close(fp))
+  end)
+end)
+
 describe('file_read', function()
   itp('can read small chunks of input until eof', function()
     local err, fp = file_open(file1, 0, 384)