Merge pull request #22453 from zeertzjq/vim-9.0.0795

vim-patch:9.0.{0795,0803,0810}: readblob() offset and size

1 files changed, 31 insertions, 0 deletions

diff --git a/src/nvim/testdir/test_blob.vim b/src/nvim/testdir/test_blob.vim
index b1859f9dfe..b01d9309fa 100644
--- a/src/nvim/testdir/test_blob.vim
+++ b/src/nvim/testdir/test_blob.vim
@@ -439,10 +439,41 @@ func Test_blob_read_write()
       call writefile(b, 'Xblob')
       VAR br = readfile('Xblob', 'B')
       call assert_equal(b, br)
+      VAR br2 = readblob('Xblob')
+      call assert_equal(b, br2)
+      VAR br3 = readblob('Xblob', 1)
+      call assert_equal(b[1 :], br3)
+      VAR br4 = readblob('Xblob', 1, 2)
+      call assert_equal(b[1 : 2], br4)
+      VAR br5 = readblob('Xblob', -3)
+      call assert_equal(b[-3 :], br5)
+      VAR br6 = readblob('Xblob', -3, 2)
+      call assert_equal(b[-3 : -2], br6)
+
+      #" reading past end of file, empty result
+      VAR br1e = readblob('Xblob', 10000)
+      call assert_equal(0z, br1e)
+
+      #" reading too much, result is truncated
+      VAR blong = readblob('Xblob', -1000)
+      call assert_equal(b, blong)
+      LET blong = readblob('Xblob', -10, 8)
+      call assert_equal(b, blong)
+      LET blong = readblob('Xblob', 0, 10)
+      call assert_equal(b, blong)
+
       call delete('Xblob')
   END
   call CheckLegacyAndVim9Success(lines)
 
+  if filereadable('/dev/random')
+    let b = readblob('/dev/random', 0, 10)
+    call assert_equal(10, len(b))
+  endif
+
+  call assert_fails("call readblob('notexist')", 'E484:')
+  " TODO: How do we test for the E485 error?
+
   " This was crashing when calling readfile() with a directory.
   call assert_fails("call readfile('.', 'B')", 'E17: "." is a directory')
 endfunc