vim-patch:8.0.1523: cannot write and read terminal screendumps

Problem:    Cannot write and read terminal screendumps.
Solution:   Add term_dumpwrite(), term_dumpread() and term_dumpdiff().
            Also add assert_equalfile().
https://github.com/vim/vim/commit/d96ff165113ce5fe62107add590997660e3d4802

1 files changed, 35 insertions, 0 deletions

diff --git a/src/nvim/testdir/test_assert.vim b/src/nvim/testdir/test_assert.vim
index a4c8ce7e43..cbb65ffc01 100644
--- a/src/nvim/testdir/test_assert.vim
+++ b/src/nvim/testdir/test_assert.vim
@@ -1,5 +1,40 @@
 " Test that the methods used for testing work.
 
+func Test_assert_equalfile()
+  call assert_equalfile('abcabc', 'xyzxyz')
+  call assert_match("E485: Can't read file abcabc", v:errors[0])
+  call remove(v:errors, 0)
+
+  let goodtext = ["one", "two", "three"]
+  call writefile(goodtext, 'Xone')
+  call assert_equalfile('Xone', 'xyzxyz')
+  call assert_match("E485: Can't read file xyzxyz", v:errors[0])
+  call remove(v:errors, 0)
+
+  call writefile(goodtext, 'Xtwo')
+  call assert_equalfile('Xone', 'Xtwo')
+
+  call writefile([goodtext[0]], 'Xone')
+  call assert_equalfile('Xone', 'Xtwo')
+  call assert_match("first file is shorter", v:errors[0])
+  call remove(v:errors, 0)
+
+  call writefile(goodtext, 'Xone')
+  call writefile([goodtext[0]], 'Xtwo')
+  call assert_equalfile('Xone', 'Xtwo')
+  call assert_match("second file is shorter", v:errors[0])
+  call remove(v:errors, 0)
+
+  call writefile(['1234X89'], 'Xone')
+  call writefile(['1234Y89'], 'Xtwo')
+  call assert_equalfile('Xone', 'Xtwo')
+  call assert_match("difference at byte 4", v:errors[0])
+  call remove(v:errors, 0)
+
+  call delete('Xone')
+  call delete('Xtwo')
+endfunc
+
 func Test_assert_fails_in_try_block()
   try
     call assert_equal(0, assert_fails('throw "error"'))